|Publication number||US3174851 A|
|Publication date||Mar 23, 1965|
|Filing date||Dec 1, 1961|
|Priority date||Dec 1, 1961|
|Publication number||US 3174851 A, US 3174851A, US-A-3174851, US3174851 A, US3174851A|
|Inventors||Buehler William J, Wiley Raymond C|
|Original Assignee||Buehler William J, Wiley Raymond C|
|Export Citation||BiBTeX, EndNote, RefMan|
|Non-Patent Citations (1), Referenced by (340), Classifications (20) |
|External Links: USPTO, USPTO Assignment, Espacenet|
US 3174851 A
United States Patent 3,174,851 NICKEL-BASE ALLOYS William J. Buehler, Hyattsville, and Raymond C. Wiley,
Rockville, Md., assignors to the United States of America as represented by the Secretary of the Navy No Drawing. Filed Dec. 1, 1961, Ser. No. 157,049
3 Claims. (Cl. 75-170) (Granted under Title 35, US. Code (1952), see. 266) The invention described herein may be manufactured and used by or for the Government of the United States of America for Governmental purposes without the payment of any royalties thereon or therefor.
This invention relates to a series of novel structural alloys of the intermetallic compound type which are characterized by unusual mechanical and physical properties.
Most intermetallic compounds, other than TiNi, are very brittle, lack any form of ductility at room temperature and in spite of many other outstandingly good properties displayed by these compounds, such as strength maintenance at high temperatures, their brittleness at room temperature has made these compounds virtually useless in structural applications except as minor strengthening constituents in a more ductile matrix metal or alloy.
Novel intermetallic compound base materials of the TiNi type have now been discovered which not only possess the desirable properties characteristic of intermetallic compounds in general but also possess hitherto unknown and unusual properties.
Accordingly, it is an object of the present invention to provide a new series of structural alloys of the intermetallic compound type characterized by high strength at room temperature and at elevated temperatures, good oxidation resistance up to a moderate fraction of the melting temperature, good corrosion resistance, moderate density, reasonable ductility and impact resistance at all temperatures, and good weldability and being further characterized by non'magnetic stability at useful temperatures and unusual mechanical vibration damping properties which are sensitive to both composition and temperature changes.
It is a further object to provide intermetallic compoundbase alloys capable of being readily melted, cast into a chemically homogeneous solid mass and worked hot (above recrystallizationtemperature), cold (below recrystallization temperature) or by hot and cold means to a final usable shape.
It is yet another object to provide novel intermetallic compound alloys capable of heat treatment to any required hardness value from approximately about 65 R to approximately about 62 R It is a still further object to provide a non-magnetic alloy capable of being heat treated or developed to high hardness and strength for use in non-magnetic tools and other functions in connection with magnetic sensitive devices.
The term intermetallic compounds as a general term is considered hereinafter as an intermediate phase in an alloy system, having a reasonable range of homogeneity and relatively simple stoichiometric proportions, in which the nature of the atomic binding can vary from metallic to ionic, and further includes all intermediate phases in binary and higher order metal systems whether ordered or disordered. These intermetallic compounds are combinations of two or more metals, the atoms of such metals generally being in a simple whole number ratio. In the majority of cases, however, the formulas of intermetallic compounds do not agree with formulas based on the principle of valency.
The novel alloys developed in accordance with the present invention occur in three possible phases as illustrated by the following equilibrium equation:
TiNi=Ti Ni+TiNi They were prepared as illustrated in the following detailed example.
EXAMPLE The raw materials used were Mond nickel shot and commercially pure titanium bar stock.
The preparation of the novel intermetallic TiNi alloys may be divided into three distinct steps as follows:
(a) Melting of the alloy (b) Working of the arc-cast alloys (c) Heat treating the wrought materials Melting of the alloys The alloys, due to their high titanium content, may be melted by either consumable or non-consumable are methods or the like employing a Water-cooled copper crucible or hearth.
Working of the arc-cast alloys All of the cast alloys between about 52 to 56 weight percent nickel and correspondingly between about 48 to 44 Weight percent titanium may be hot worked without any preliminary heat treatment. A stoichiometric TiNi composition of 55.1 weight percent nickel and 44.9 weight percent titanium was readily hot worked in the as cast condition between about 650 C. to about 1100 C., the preferred hot working temperature range being from about 700 C. to 900 C.
Alloys containing above 56 weight percent nickel, that is from about 56 to 64 weight percent nickel required a preliminary heat treatment to render them hot workable. This heat treatment consisted of heating the alloys to about 1050 C. until heated through and then slowly cooling to room temperature. Alternatively, the alloys may be heated to about 1050 C. until heated through, cooled slowly to about 850 C. and held at that temperature until heated through and subsequently allowed to slowly cool to room temperature. The principle behind the above pre-working heat treatments is to precipitate and coalesce the excess compound phase TiNi3 from solution with the compound phase of TiNi. This results in a ductile TiNi matrix interspersed with the more brittle TiNi compound coalesced into harmless particles. Following the above described alternative pre-working heat treatments the two phase TiNi-l-excess TiNi alloy was capable of being rolled at any temperature between about 700 C. to about 900 C.
35 Heat treating the wrought materials The hardness of alloys containing between about 52 to 56 weight percent nickel (remainder titanium) and being predominantly single phase TiNi was only very slightly affected by any heat treatment regardless of the rate of cooling.
Conversely, the hardness of alloys containing between about 56 to 64 weight percent nickel (remainder titanium) are very much affected by heat treatment and particularly by the cooling rate. These alloys when heated to above about 900 C. and quenched in room temperature water .attain a high hardness. For instance, an alloy of about 60 weight percent nickel and about 40 weight percent titanium yielded, when quenched from between 900 C. and 1110 C., a hardness varying between 58 R and 62 R as may be seen from Table I.
Table 1 AVERAGE HARDNESS OF 60 Ni-40 Ti (WEIGHT PER- CENT) ALLOY WATER QUENCHED FROM DIFFERENT TEMPERATURES Quenching Temp, C. Harilincss, Remarks 1,110" O 62 Heat treated in an air atmosphere. 1,000 C V 01 Do. 900 C 58 Do.
The same 60 Ni-40 Ti (wt. percent) alloy when furnace cooled (average cooling rate about 50" C./hr.) attained a final hardness of about 35 R such hardness being approximately equal to the hardness of alloy compositions being in the T iNi phase (52 to 56 weight percent nickel) as shown in Table II.
The above data clearly show the capability of the nonstoichiometric TiNi alloys (i.e., those containing excess nickel) to be hardened by quenching. It is also clear that an alloy of 56 wt. percent Ni (remainder Ti) is the transition between hardenable and non-hardenable alloys and that a great excess of the hardening constituent TiNi (above about 64 Wt. percent nickel) serves to reduce the quenched hardness. Thus the preferred range, for maximum hardness, would be between 58 and 62 wt. percent Ni.
The hardness of quench-hardened alloy (56 to 64 wt. percent Ni, remainder Ti) components may be reduced to a lesser degree of hardness if such is required for a specific application. Such reduction must be based upon the best compromise of mechanical properties for the particular application. Reduction of hardness of quenchhardened all-oys may be accomplished by (A) slowing down the cooling rate of the heat treated component to yield hardnesses between about 35 R (furnace cool) and about 62 R (water quench) and by (B) tempering. This tempering process is accomplished by reheating the quench-hardened alloy to various temperatures below the point of change in slope of the phase boundary between the TiNi and TiNi-i-TiNi phase areas (about 900 C.) and cooling at a specified slow rate, the final tempered hardness being determined by the heating temperature, period of time at the heating temperature and the rate of cooling. In order to minimize surface oxidation (when heating above about 600 C.) the above hardening and tempering heat treatments may be performed in a controlled atmosphere of helium or argon. In many applications, however, heat treatment in air will sufiice.
Further hardness data for TiNi, Ti Ni and TiNi compositions are shown in Table III.
Table III Alloy Alloy Melting Hot Roll Temp, C Hardness, Composition R TiN i Non-consu1nable 30-31 TiNi TiNi TiNi 'liNL As cast (No H.R.)..
From the above data it may be seen that the room temperature hardness increases with an increase in rolling temperature which is undoubtedly related to the higher temperature of heatingand fairly rapid cooling rate from temperature. It may also be seen that while the Ti Ni composition alloy is quite hard (53 R the TiNi compound has a hardness (34 R more like that of the TiNi alloy. Yet in spite of the much lower hardnessexhibited by TiNi it is similar to the Ti Ni compound in that it is brittle even at high homologous temperatures.
A particularly unusual property was observed of these novel alloys containing from about 50 to 70 wt. percent Ni (remainder Ti) and this was the property of these alloys to retain their hardness characteristics independent of temperature, for example, at temperatures ranging from about room temperature up to about 463 C. and down to about C. Alloys characterizedby an essentially pure TiNi phase (54.5 to 55.1 W/o Ni-Ti have even shown a tendency to exhibit a secondary hardening. This is indicated in Table III, column 8 Tensile properties were measured on both 54.5 and 55.1 wt. percent Ni alloys (remainder Ti). In every case, a standard specimen measuring 0.252 diameter x 1.0" gage length was employed. The test sections were finish lapped in the longitudinal direction to avoid any possible transverse notches. To avoid oxidation of the prepared sample surfaces and minimize the possible interstitial element (0, N, H) pickup, vacuum or controlled atmosphere heat treating was used. Vacuum heat'treating was performed in an evacuated quartz tube. The tensile test results obtained from the two TiNi alloys are shown in Table IV.
Table IV TENSILE TEST DATA 54.5 w/o N i-Ti Alloy (room temperature) Ultimate Yield Elonga- Reduction Modulus of Specimen Treatment Tensile Str., Strength b tion, in area, Elasticity, Remarks s linfl lbs/in. percent percent p.s.i.
800 C. 1 hour furnace cooled e 112, 100 40, 000 8. 1 11. 6X10 Bgoke gutside gage en t 800 C. 1 hour water quench e 123,800 40, 700 15. 16.0 11. 8X10" g 54.5 w/o Ni-Ti Alloy (185 to 192 F. test temperature 800 C. 1 hour furnace cooled e 110,500 46, 800 3. 6 11. 1X10 Biioke olutside gage engt 800 C. 1 hour water quench e 115, 300 55,100 10. 9 13.0 11. 2X10 55.1 W/O Ni-Ti Alloy (room temperature) Hot swaged at 900 0., air cooled 125, 000 81, 400 8.1 1,000 C. min., furnace cooled 116, 700 56, 200 7. 2 Hard-:26 R
Do .1 114, 200 33, 600 3. 2 Broke outside gage lRength. Hard=24 Des 140, 500 as, 200 9.9 Hard =24 3.. 1,000 C. 30 min, water quench 82, 320 71, 400 3. 5 Hard=33 Rt.
Do. 84, 400 62, 250 4. 5 l1. 8X10. Hard=31 Be.
* Tensile specimen size 0.252 dia. x 1.000 gage length.
b Offset- 0.2%.
e Heat treatment performed in an argon atmosphere.
6 Specimen sealed in an evacuated quartz tube during heat treatment.
Upon observation of the above data it becomes appar- Table VI ent that the ductility, as indicated by the percentage 30 elongated, can go as big has 15.5% with the average being in the 7-10 range. For an intermetallic compound this is an unusually and unexpectedly high room temperature elongation. Moreover, it is seen that the yield CORROSION CHARACTERISTICS Corrosive media: Resultant attack Salt spray, 20% soln.,
95 F. for 96 hrs. Faint whitish surface destrength varies considerably with composition and heat 35 treatment while the ultimate tensile strength and modulus posit on b k edge, f of elasticity are fairly constant regardless of composition specimm NO attack on and heat treatment. 6X osed surface For determination of impact properties, carefully p prepared unnotched square cross-section bars were used. 4 Sea Water 192 The specimen surfaces were hand lapped in the longitudi- Normal air atmosnal direction to minimize transverse scratches. The phepe Nil. Charpy impact tests were performed in a standard Riehle Normal handhn N11. machine. The resulting data are summanzed in Table V. g
Table V IMPACT DATA FOR TiNi COMPOSITION ALLOYS 1 GIVEN PRIOR THERMAL TREATMENTS AND AT VARIOUS TEST TEMPERATURES Nominal Alloy Specimen Section Conditions of Test Charpy Composition Size Impact ft.lbs.
54.5 w/o Ni-Ti 2 0.296 x 0.296 Test Temperature: 75 F. (R.T.) 28 54.5 w/o Ni-Ti 0.296 x 0.296 Test Temperature: 125 F 32 54.5 w/o Ni-Ti 0.296 x 0.296. Test Temperature: 200 F- 29. 5 54.5 w/o Ni-Ti 0.296 x 0.296. Test Temperature: 112 F 40 54.5 w/o Ni-Ti 2 0.206" x 0.206 Cooled to l12 F., Warmed in RT. water, 23
stabilized 15 min. in R.T. air. 54.5 w/o Ni-Ti 2 0.296 x 0.296 Cooled to 112 F., Warmed in RT. water, 25
stabilized 15 min. in RT. air, plus heat to a test temperature of 160 F. 55.1 w/o Ni-Ti 3 0.297 x 0.297" Test Temperature: F. (R.T.) 24 55.1 w/o NiTi 0.297 x 0.297 Test Temperature: 200 F 8 55.1 w/o Ni-Ti 3 0.207 x 0.297 Test Temperature: -l12 F- 43 1 Unnotched square cross-section bars were employed. 2 Specimens prepared from hot swaged (0000 0.) bars. 3 Specimens prepared from hot rolled (900 0.) plate. Again, as in the case of the tensile elongation, un- Table VII usually high impact strengths were attained as compared OXIDATION orrannc'rnnrs'rros with most intermetallic compounds. For both of the TiNi alloys the minimum value was 23 ft.-lbs. even on the undersize specimens. Especially to be noted is the Weight Gain (Grns.) due to Oxidation of Various Temperatures Testing Time, Hrs.
increase in impact strength at temperatures well below 800C, 1 0()[)(] freezing.
Specimens of a 55.1wt. percent Ni (remainder Ti) alloy .016 .007 were exposed to various common corrosive media and 1853 to elevated temperature oxidation attack. The results of 3 these tests are summarized, respectively, in following 1 5 I Tables VI and VII.
It will be noted from Table VI that in each case the attack was negligible and only in the rather drastic salt spray tests was a perceptible film formed where the specimen was held. The passivity of this alloy to corrosive attack is obviously a highly desirable characteristic.
From Table VII it will be seen that at 600 C. there was very little initial oxidation and oxide buildup was almost negligible after the first two hours. At 800 C. oxidation proceeded steadily after the first two hours and at 1000" oxidation was initially rapid and proceeded steadily. At 800 C. and 1000 C. spalling of the oxide surface was moderate to heavy.
In the fabrication of present day structural materials joining is an extremely important consideration. To obtain an indication of the Weldability of the TiNi material, two chamfered A5" thick hot rolled plates of TiNi were butt welded together by the heliarc method. Little ditliculty was encountered in making the joint and the weld section appeared to be free of cracks and porosity. Based upon the observed properties in this arc-cast TiNi material, the weld section should be quite strong and tough. Further, examination of the magnetic properties of the weld section indicate that it is equally as paramagnetic as the base material.
Among the various unusual properties exhibited by these novel alloys, the property of paramagnetism is of utmost importance. A paramagnetic material has been defined as a material whose specific permeability is greater than unity and is practically independent of the magnetizing force. The nickel-titanium alloys in the composition range which covers Ti Ni, TiNi, and TiNi are highly paramagnetic, in spite of the high amount of nickel present in there alloys. Alloys of the 54 to 60 w/o Ni, remainder Ti composition have been magnetically evaluated after various thermal treatments and at widely varying temperature. The magnetic testing included both magnetic susceptibility and permeability measurements. In these tests it was found that the permeability approached extremely close to unity regardless of the temperature, residual stresses, or prior thermal treatment. Care must be exercised to remove any oxide coating in cases where the TiNi-base alloys are to be used in non-magnetic applications. This is caused by the combination of some Ni of the base alloy with O to form a ferromagnetic oxide coating.
Of considerable importance in regard to these novel alloys is the unusual characteristics exhibited by the mechanical vibration damping eifect. The stoichiometric alloy in both the arc-cast and hot worked conditions exhibits a unique and drastic change in vibration damping with minor changes in temperature and composition. Quantitative and qualitative experiments have shown the damping of a 54.5 w/o Ni-Ti alloy With minor amounts of Fe (about 0.1 w/o) to change from a highly damping material at room temperature (25 C.) to-a very low vibration damping material at 54 C. and above. Internal friction experiments performed on 0.036 diameter wire showed the logarithm of amplitude to decrease from 2.3 to 1.1 in 35 cycles at room temperature (25 C.) while the same wire drops from 2.3 to 2.1 in 35 cycles when heated at 93 C. This illustrates clearly the damping change in wrought wire of the 54.5 W/o Ni, approximately 0.1 w/o Fe, remainder essentially Ti. Even more'drastic changes in damping behavior are exhibited by this composition alloy when in the arc-cast condition. These changes in damping appear to be associated with the phase equilibria of the alloy system. As the temperature is raised the TiNi phase increases in quantity at the expense of reducing the extraneous phases present (Ti Ni and TiNi As this occurs damping is markedly 'decreased.
The phase equilibria theory is further confirmed by the fact that alloys containing excess Ni or excess Ti over the stoichiometric composition have distinctly different room temperature damping properties. For example the Tib cs rich alloys (less than 54.5 w/o Ni) are highly damping at room temperature, while alloys on the Ni-rich side (in excess of 54.5 w/o Ni) show low damping at room temperature, thus indicating that the Ti Ni phase coupled with the liNi produces the high damping capacity. Anything lessening the Ti Ni phase, e.g. increased Ni, higher temperatures, impurity atoms like Fe, etc. causes minor changes in the TiNi/Ti Ni phase equilibria and thus promotes drastic vibrational damping changes- This unusual damping phenomenon may lead to the utilization of these alloys as temperature sensing devices.
A summary of the properties of the novel TiNi base alloys is presented in Table VH1. (See column 8.)
In summary, novel TiNi alloys containing from about 50-70 wt. percent Ni (remainder Ti) have been discovered which possess the unusual combination of properties of high hardness at wide temperature variations and especially at temperatures Well below freezing and having unusually good ductility. and impact strength at these same temperatures. Within this range of 50-70 wt. percent Ni, the alloys may be subdivided into those alloys having a range of about 52 to about 56 wt. percent Ni (remainder Ti) and those alloys containing from about 56 to about 64 wt. percent Ni (remainder Ti). The former are characterized by the existence of an almost wholly TiNi phase, by being readily workable whether hot or at room temperature and by exhibition of unusually high ductility at room temperature. The latter alloys are characterized by being two-phase materials (TiNi-I-TiNig) capable of being hardened to'high hardness levels. The combination of the high hardness of these latter alloys and their characteristic paramagnetism (magnetic permeability=less than 1.02) is of great importance and leads to their use as superior non-magnetic tools magnetometer applications and structural materials which will remain stably nonmagnetic, free of corrosive attack, and resistant to abrasion.
Table VIII SUMMARY OF PROPERTIES OF TiNi PHASE ALLOYS [Physical (55.1 w/o Ni-Ti)] Density (25 C.), gr./cm. 6.45.
Melting point, C. 1240-1310. Melting point, F. 2264-2390. Crystal structure CsCl (B.C.C.). Lattice parameter, A 3.015.
Electrical resistivity (25 C.), microhm- Electrical resistivity (900 C.), mi-
Linear coef. of expansion (24-900 C.),
per C. 10.4 10- Recrystallization temperature, C. 550-650. Magnetic permeability l.002.
Magnetic susceptibility (mass, -196 to 550 C.) 5-9 10' [Mechanical] 54.5 w/o Ni V 55.1 w/o Ni Ultimate Tensile Stn, p.s.i-..- 110,000-124,000- 82,000-140,000.
Yield Str., p.s.i** 40,G00-55,000 33,00081,400.
Youngs Modulus, p.s.i 11.2-11.8 X 10 Up to 11.8 X 10 Tensile Elongation, Up to 15.5- Up to 10.
percent? Reduction in Area, psrcent-... Up to 1G Hardness. Rockwell-A 42-52 65-68.
Hot Hardness," D.P.H.:
Impact Str., ft.-lbs.:
24 0. (room temp.) C Modulus of Rupture, p.s.i.. Mod. of Elas. (Trans. Bend),
25 0 (room temp.) 0 (3....
*Specimeus rapidly cooled prior to testing. Percent ollset=0 2%. Gage 1ength=1 1H.
It should be understood, of course, that the foregoing disclosure relates only to preferred embodiments of the novel alloys of the invention and that modifications or alterations may be made therein without departing from the spirit and scope of the invention as set forth in the appended claims.
Having thus described the invention, what is claimed and desired to be secured by Letters Patent of the United States of America is:
1.A novel alloy composition consisting essentially of from about 50 percent to about 70 percent nickel by weight and correspondingly from about 50 percent to about 30 percent titanium by weight, said alloy having the structure of a TiNi phase in combination with a TiNi pha-se dispersed in a TiNi matrix within a temperature range of from about 500 C. to about -75 C. and having the properties of being paramagnetic, of retaining hardness throughout said temperature range and of being corrosion resistant.
2.A novel alloy composition consisting essentially of from 52 percent to about 5 6 percent nickel by weight and correspondingly from about 48 percent to about 44 percent titanium by weight, said alloy having the structure of a substantially TiNi phase within a temperature range of from about 500 C. to about 75 C. and having the properties of being paramagnetic, of being highly vibration damping at about room temperature and having the capability of being plastically deformed at about room 1t) temperature and retaining the deformed shape until heated to a higher temperature whereupon the prior nondeformed condition will be reassumed.
3. A novel alloy composition consisting essentially of from about 56 percent to about 64 percent nickel by weight and correspondingly from about 44 percent to about 36 percent titanium by weight, said alloy having the structure of a substantially TiNi phase dispersed in a TiNi matrix within a temperature range of from about 450 C. to about 75 C. and having the properties of being paramagnetic, of high hardness upon heat treatment, of being abrasion and corrosion resistant and capable of being hot wrought into useable shapes prior to hardening.
References Cited by the Examiner I. J. Wallbaurn, Archiv. Fiir Das Eisenhuttenwesen, JG 14, 1940-1941, pages 521-526.
Hansen: Constitution of Binary Alloys, published by McGraw-Hill Book Co., Inc., New York, 1958, pages 1049-1053.
Poole et al.: The Equilibrium Diagram of The System Nickel-Titanium, Journal of the Institute of Metals, vol. 83, pages 473-480, July 1955.
DAVID RECK, Primary Examiner.
RAY K. WINDHAM, WINSTON A. DOUGLAS,
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3351463 *||Aug 20, 1965||Nov 7, 1967||Buehler William J||High strength nickel-base alloys|
|US3352650 *||Jul 19, 1965||Nov 14, 1967||Buehler William J||Metallic composites|
|US3403238 *||Apr 5, 1966||Sep 24, 1968||Navy Usa||Conversion of heat energy to mechanical energy|
|US3440997 *||Jul 11, 1966||Apr 29, 1969||Avco Corp||Temperature indicating device|
|US3483748 *||May 5, 1967||Dec 16, 1969||Avco Corp||Temperature sensing|
|US3483752 *||Feb 10, 1967||Dec 16, 1969||Avco Corp||Temperature monitor|
|US3508914 *||Oct 7, 1965||Apr 28, 1970||Us Navy||Methods of forming and purifying nickel-titanium containing alloys|
|US3516082 *||Jun 9, 1967||Jun 2, 1970||Cooper Roy G||Temperature sensing devices|
|US3529958 *||Nov 4, 1966||Sep 22, 1970||Buehler William J||Method for the formation of an alloy composed of metals reactive in their elemental form with a melting container|
|US3676815 *||Jul 28, 1969||Jul 11, 1972||Essex International Inc||Thermally sensitive controls for electric circuits|
|US3684994 *||Jul 2, 1969||Aug 15, 1972||Robertshaw Controls Co||Hot wire relay type devices and methods of maintaining or producing such devices|
|US3727173 *||Dec 6, 1971||Apr 10, 1973||Ibm||Zero-insertion force connector|
|US3805567 *||Sep 7, 1971||Apr 23, 1974||Raychem Corp||Method for cryogenic mandrel expansion|
|US3925071 *||May 20, 1968||Dec 9, 1975||Chrysler Corp||Heat resistant alloys|
|US3971566 *||Jan 6, 1975||Jul 27, 1976||Raychem Corporation||Hydraulic sealing member and process|
|US3985177 *||Jan 20, 1975||Oct 12, 1976||Buehler William J||Method for continuously casting wire or the like|
|US4002954 *||Dec 11, 1975||Jan 11, 1977||The United States Of America As Represented By The Secretary Of The Army||Trigger circuit|
|US4006381 *||Aug 28, 1975||Feb 1, 1977||Rca Corporation||CRT with thermally-set nitinol getter spring|
|US4022519 *||May 14, 1975||May 10, 1977||Raychem Limited||Heat recoverable connection|
|US4035007 *||Oct 29, 1973||Jul 12, 1977||Raychem Corporation||Heat recoverable metallic coupling|
|US4197709 *||Jun 9, 1978||Apr 15, 1980||Hochstein Peter A||Thermal energy scavenger (stress limiter)|
|US4198081 *||May 26, 1977||Apr 15, 1980||Raychem Corporation||Heat recoverable metallic coupling|
|US4236949 *||Sep 25, 1978||Dec 2, 1980||Raychem Corporation||Process for preparing a hermetically sealed assembly|
|US4242954 *||May 23, 1978||Jan 6, 1981||Graham Magnetics Incorporated||Calendar roll system|
|US4246687 *||Apr 3, 1979||Jan 27, 1981||N.V. Raychem S.A.||Branch-off method|
|US4268329 *||Oct 1, 1979||May 19, 1981||Raychem Corporation||Process for preparing a hermetically sealed assembly|
|US4282033 *||Jun 16, 1980||Aug 4, 1981||The United States Of America As Represented By The Secretary Of The Navy||Melting method for high-homogeneity precise-composition nickel-titanium alloys|
|US4283079 *||Mar 30, 1978||Aug 11, 1981||The United States Of America As Represented By The United States Department Of Energy||Ultra high vacuum seal arrangement|
|US4283233 *||Mar 7, 1980||Aug 11, 1981||The United States Of America As Represented By The Secretary Of The Navy||Method of modifying the transition temperature range of TiNi base shape memory alloys|
|US4304613 *||May 12, 1980||Dec 8, 1981||The United States Of America As Represented By The Secretary Of The Navy||TiNi Base alloy shape memory enhancement through thermal and mechanical processing|
|US4310354 *||Jan 10, 1980||Jan 12, 1982||Special Metals Corporation||Process for producing a shape memory effect alloy having a desired transition temperature|
|US4337090 *||Sep 5, 1980||Jun 29, 1982||Raychem Corporation||Heat recoverable nickel/titanium alloy with improved stability and machinability|
|US4466713 *||Sep 4, 1981||Aug 21, 1984||Kabushiki Kaisha Suwa Seikosha||Lens holding structure and wire material|
|US4468076 *||Jul 23, 1982||Aug 28, 1984||Raychem Corporation||Array package connector and connector tool|
|US4505767 *||Oct 14, 1983||Mar 19, 1985||Raychem Corporation||Nickel/titanium/vanadium shape memory alloy|
|US4522457 *||Oct 7, 1983||Jun 11, 1985||Raychem Corporation||Compliant connecting device with heat-recoverable driver|
|US4553393 *||Aug 26, 1983||Nov 19, 1985||The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration||Memory metal actuator|
|US4559512 *||Dec 28, 1984||Dec 17, 1985||Raychem Corporation||Self-protecting and conditioning memory metal actuator|
|US4565589 *||Sep 28, 1983||Jan 21, 1986||Raychem Corporation||Nickel/titanium/copper shape memory alloy|
|US4570851 *||May 7, 1984||Feb 18, 1986||Cirillo John R||Temperature regulating, pressure relief flow valves employing shaped memory alloys|
|US4619568 *||Oct 24, 1983||Oct 28, 1986||Carstensen Kenneth J||Heat recoverable locking device|
|US4621844 *||Sep 6, 1984||Nov 11, 1986||Shell Oil Company||Memory metal connector|
|US4679292 *||Sep 24, 1985||Jul 14, 1987||Grumman Aerospace Corporation||Method for securing a panel to a structural member|
|US4720944 *||Jan 29, 1987||Jan 26, 1988||Paul Loicq||Suspended ceiling panel retaining system|
|US4729799 *||Jun 30, 1986||Mar 8, 1988||United Technologies Corporation||Stress relief of single crystal superalloy articles|
|US4759293 *||Jun 17, 1987||Jul 26, 1988||Davis Jr Thomas O||Article using shape-memory alloy to improve and/or control the speed of recovery|
|US4781606 *||Mar 16, 1988||Nov 1, 1988||Raychem Corporation||Wire stripping arrangement|
|US4813807 *||Feb 5, 1987||Mar 21, 1989||Grumman Aerospace Corporation||Memory metal connector for panels|
|US4832382 *||Jan 25, 1988||May 23, 1989||Raychem Corporation||Coupling device|
|US4836496 *||Aug 27, 1987||Jun 6, 1989||Johnson Service Company||SMF actuator|
|US4839479 *||Jul 18, 1988||Jun 13, 1989||Davis Jr Thomas O||Article using shape-memory alloy to improve and/or control the speed of recovery|
|US4872713 *||Jan 25, 1988||Oct 10, 1989||Raychem Corporation||Coupling device|
|US4881981 *||Apr 20, 1988||Nov 21, 1989||Johnson Service Company||Method for producing a shape memory alloy member having specific physical and mechanical properties|
|US4943326 *||Oct 20, 1988||Jul 24, 1990||The Furukawa Electric Co., Ltd.||Ornament and method of manufacturing the same|
|US5002716 *||May 5, 1989||Mar 26, 1991||Raychem Corporation||Joining insulated elongate conduit members|
|US5088772 *||Jun 15, 1990||Feb 18, 1992||N. V. Raychem S.A.||Joining insulated elongate conduit members|
|US5114504 *||Nov 5, 1990||May 19, 1992||Johnson Service Company||High transformation temperature shape memory alloy|
|US5160802 *||Sep 24, 1975||Nov 3, 1992||The United States Of America As Represented By The Secretary Of The Navy||Prestressed composite gun tube|
|US5176275 *||Mar 20, 1990||Jan 5, 1993||Bowie Stuart S||Temperature release containers|
|US5199497 *||Feb 14, 1992||Apr 6, 1993||Baker Hughes Incorporated||Shape-memory actuator for use in subterranean wells|
|US5215145 *||Feb 14, 1992||Jun 1, 1993||Baker Hughes Incorporated||Wedge-set sealing flap for use in subterranean wellbores|
|US5238004 *||Sep 30, 1992||Aug 24, 1993||Boston Scientific Corporation||High elongation linear elastic guidewire|
|US5273116 *||Feb 14, 1992||Dec 28, 1993||Baker Hughes Incorporated||Firing mechanism for actuating wellbore tools|
|US5376001 *||May 10, 1993||Dec 27, 1994||Tepper; Harry W.||Removable orthodontic appliance|
|US5496294 *||Jul 8, 1994||Mar 5, 1996||Target Therapeutics, Inc.||Catheter with kink-resistant distal tip|
|US5522819 *||May 12, 1994||Jun 4, 1996||Target Therapeutics, Inc.||Dual coil medical retrieval device|
|US5582619 *||Jun 30, 1995||Dec 10, 1996||Target Therapeutics, Inc.||Stretch resistant vaso-occlusive coils|
|US5624461 *||Jun 6, 1995||Apr 29, 1997||Target Therapeutics, Inc.||Three dimensional in-filling vaso-occlusive coils|
|US5658264 *||Nov 10, 1994||Aug 19, 1997||Target Therapeutics, Inc.||High performance spiral-wound catheter|
|US5685148 *||Oct 19, 1995||Nov 11, 1997||Landis & Gyr Technology Innovation Ag||Drive apparatus|
|US5695483 *||Aug 17, 1995||Dec 9, 1997||Target Therapeutics Inc.||Kink-free spiral-wound catheter|
|US5702373 *||Aug 31, 1995||Dec 30, 1997||Target Therapeutics, Inc.||Composite super-elastic alloy braid reinforced catheter|
|US5733329 *||Dec 30, 1996||Mar 31, 1998||Target Therapeutics, Inc.||Vaso-occlusive coil with conical end|
|US5743905 *||Feb 27, 1996||Apr 28, 1998||Target Therapeutics, Inc.||Partially insulated occlusion device|
|US5745210 *||Jun 10, 1997||Apr 28, 1998||Bausch & Lomb Incorporated||Integral eyewear frame|
|US5749837 *||Aug 1, 1996||May 12, 1998||Target Therapeutics, Inc.||Enhanced lubricity guidewire|
|US5749891 *||Jan 7, 1997||May 12, 1998||Target Therapeutics, Inc.||Multiple layered vaso-occlusive coils|
|US5769796 *||Jan 22, 1997||Jun 23, 1998||Target Therapeutics, Inc.||Super-elastic composite guidewire|
|US5772609 *||Jun 28, 1996||Jun 30, 1998||Target Therapeutics, Inc.||Guidewire with variable flexibility due to polymeric coatings|
|US5782811 *||May 30, 1996||Jul 21, 1998||Target Therapeutics, Inc.||Kink-resistant braided catheter with distal side holes|
|US5787947 *||Nov 19, 1996||Aug 4, 1998||Tetra Laval Holdings & Finance S.A.||Flexible nozzle integrated with a transformable wire|
|US5795341 *||Jun 7, 1995||Aug 18, 1998||Target Therapeutics, Inc.||High performance spiral-wound catheter|
|US5827201 *||Jul 26, 1996||Oct 27, 1998||Target Therapeutics, Inc.||Micro-braided guidewire|
|US5827322 *||Sep 20, 1996||Oct 27, 1998||Advanced Cardiovascular Systems, Inc.||Shape memory locking mechanism for intravascular stents|
|US5833705 *||Sep 20, 1996||Nov 10, 1998||Target Therapeutics, Inc.||Stretch resistant vaso-occlusive coils|
|US5853400 *||Jun 3, 1997||Dec 29, 1998||Target Therapeutics, Inc.||High performance spiral-wound catheter|
|US5853418 *||Jan 7, 1997||Dec 29, 1998||Target Therapeutics, Inc.||Stretch resistant vaso-occlusive coils (II)|
|US5856631 *||Nov 20, 1996||Jan 5, 1999||Nitinol Technologies, Inc.||Gun barrel|
|US5868754 *||Jun 12, 1996||Feb 9, 1999||Target Therapeutics, Inc.||Medical retrieval device|
|US5873906 *||Jul 21, 1997||Feb 23, 1999||Gore Enterprise Holdings, Inc.||Procedures for introducing stents and stent-grafts|
|US5876432 *||Mar 28, 1995||Mar 2, 1999||Gore Enterprise Holdings, Inc.||Self-expandable helical intravascular stent and stent-graft|
|US5891112 *||Jun 7, 1995||Apr 6, 1999||Target Therapeutics, Inc.||High performance superelastic alloy braid reinforced catheter|
|US5891114 *||Sep 30, 1997||Apr 6, 1999||Target Therapeutics, Inc.||Soft-tip high performance braided catheter|
|US5906606 *||Feb 27, 1996||May 25, 1999||Target Therapuetics, Inc.||Braided body balloon catheter|
|US5911731 *||Oct 10, 1997||Jun 15, 1999||Target Therapeutics, Inc.||Anatomically shaped vasoocclusive devices|
|US5919225 *||Jul 14, 1997||Jul 6, 1999||Gore Enterprise Holdings, Inc.||Procedures for introducing stents and stent-grafts|
|US5925061 *||Jan 13, 1997||Jul 20, 1999||Gore Enterprise Holdings, Inc.||Low profile vascular stent|
|US5927345 *||Apr 30, 1996||Jul 27, 1999||Target Therapeutics, Inc.||Super-elastic alloy braid structure|
|US5935148 *||Jun 24, 1998||Aug 10, 1999||Target Therapeutics, Inc.||Detachable, varying flexibility, aneurysm neck bridge|
|US5951539 *||Dec 19, 1997||Sep 14, 1999||Target Therpeutics, Inc.||Optimized high performance multiple coil spiral-wound vascular catheter|
|US5957948 *||Apr 29, 1997||Sep 28, 1999||Target Therapeutics, Inc.||Three dimensional in-filling vaso-occlusive coils|
|US5964797 *||Aug 30, 1996||Oct 12, 1999||Target Therapeutics, Inc.||Electrolytically deployable braided vaso-occlusion device|
|US5971975 *||Oct 9, 1996||Oct 26, 1999||Target Therapeutics, Inc.||Guide catheter with enhanced guidewire tracking|
|US5972019 *||Jun 5, 1997||Oct 26, 1999||Target Therapeutics, Inc.||Mechanical clot treatment device|
|US6001123 *||May 28, 1996||Dec 14, 1999||Gore Enterprise Holdings Inc.||Folding self-expandable intravascular stent-graft|
|US6004338 *||Aug 11, 1998||Dec 21, 1999||Target Therapeutics Inc.||Stretch resistant vaso-occlusive coils|
|US6013084 *||Jun 20, 1997||Jan 11, 2000||Target Therapeutics, Inc.||Stretch resistant vaso-occlusive coils (II)|
|US6015429 *||Mar 12, 1996||Jan 18, 2000||Gore Enterprise Holdings, Inc.||Procedures for introducing stents and stent-grafts|
|US6017323 *||Apr 8, 1997||Jan 25, 2000||Target Therapeutics, Inc.||Balloon catheter with distal infusion section|
|US6017362 *||Jan 22, 1997||Jan 25, 2000||Gore Enterprise Holdings, Inc.||Folding self-expandable intravascular stent|
|US6019757 *||Jul 7, 1995||Feb 1, 2000||Target Therapeutics, Inc.||Endoluminal electro-occlusion detection apparatus and method|
|US6024765 *||Mar 11, 1998||Feb 15, 2000||Target Therapeutics, Inc.||Vaso-occlusive coil with conical end|
|US6024907 *||Feb 2, 1998||Feb 15, 2000||Bruce Jagunich||Embossing with an endless belt composed of a shape memory alloy|
|US6033423 *||Nov 19, 1997||Mar 7, 2000||Target Therapeutics, Inc.||Multiple layered vaso-occlusive coils|
|US6036720 *||Dec 15, 1997||Mar 14, 2000||Target Therapeutics, Inc.||Sheet metal aneurysm neck bridge|
|US6042605 *||Jul 18, 1997||Mar 28, 2000||Gore Enterprose Holdings, Inc.||Kink resistant stent-graft|
|US6063070 *||Jul 30, 1998||May 16, 2000||Target Therapeutics, Inc.||Detachable aneurysm neck bridge (II)|
|US6063104 *||May 18, 1999||May 16, 2000||Target Therapeutics, Inc.||Detachable, varying flexibility, aneurysm neck bridge|
|US6066149 *||Sep 30, 1997||May 23, 2000||Target Therapeutics, Inc.||Mechanical clot treatment device with distal filter|
|US6066158 *||Jul 25, 1996||May 23, 2000||Target Therapeutics, Inc.||Mechanical clot encasing and removal wire|
|US6086577 *||Aug 13, 1997||Jul 11, 2000||Scimed Life Systems, Inc.||Detachable aneurysm neck bridge (III)|
|US6090099 *||May 24, 1996||Jul 18, 2000||Target Therapeutics, Inc.||Multi-layer distal catheter section|
|US6136014 *||Sep 1, 1998||Oct 24, 2000||Vivant Medical, Inc.||Percutaneous tissue removal device|
|US6139510 *||May 11, 1994||Oct 31, 2000||Target Therapeutics Inc.||Super elastic alloy guidewire|
|US6143013 *||Apr 30, 1996||Nov 7, 2000||Target Therapeutics, Inc.||High performance braided catheter|
|US6152912 *||Jun 10, 1997||Nov 28, 2000||Target Therapeutics, Inc.||Optimized high performance spiral-wound vascular catheter|
|US6159187 *||Dec 6, 1996||Dec 12, 2000||Target Therapeutics, Inc.||Reinforced catheter with a formable distal tip|
|US6165163 *||Mar 26, 1999||Dec 26, 2000||Target Therapeutics, Inc.||Soft-tip performance braided catheter|
|US6165210 *||Apr 1, 1994||Dec 26, 2000||Gore Enterprise Holdings, Inc.||Self-expandable helical intravascular stent and stent-graft|
|US6193708||Mar 24, 1999||Feb 27, 2001||Scimed Life Systems, Inc.||Detachable aneurysm neck bridge (I)|
|US6193728||Nov 4, 1999||Feb 27, 2001||Target Therapeutics, Inc.||Stretch resistant vaso-occlusive coils (II)|
|US6197014||Mar 11, 1998||Mar 6, 2001||Target Therapeutics, Inc.||Kink-resistant braided catheter with distal side holes|
|US6217566||Oct 2, 1997||Apr 17, 2001||Target Therapeutics, Inc.||Peripheral vascular delivery catheter|
|US6221513 *||May 12, 1998||Apr 24, 2001||Pacific Coast Technologies, Inc.||Methods for hermetically sealing ceramic to metallic surfaces and assemblies incorporating such seals|
|US6231586||Sep 3, 1999||May 15, 2001||Target Therapeutics, Inc.||Three dimensional in-filling vaso-occlusive coils|
|US6254458 *||Oct 28, 1999||Jul 3, 2001||Nitinol Technologies, Inc.||Post processing for nitinol coated articles|
|US6258080||Nov 18, 1998||Jul 10, 2001||Target Therapeutics, Inc.||Kink-free spiral-wound catheter|
|US6280457||Jun 4, 1999||Aug 28, 2001||Scimed Life Systems, Inc.||Polymer covered vaso-occlusive devices and methods of producing such devices|
|US6322576||Feb 4, 1998||Nov 27, 2001||Target Therapeutics, Inc.||Stable coil designs|
|US6323461 *||Mar 29, 2001||Nov 27, 2001||M.B.A., S.A.||Clamps with shape memory|
|US6331188||Jun 9, 1997||Dec 18, 2001||Gore Enterprise Holdings, Inc.||Exterior supported self-expanding stent-graft|
|US6352553||Jul 18, 1997||Mar 5, 2002||Gore Enterprise Holdings, Inc.||Stent-graft deployment apparatus and method|
|US6352561||Dec 23, 1996||Mar 5, 2002||W. L. Gore & Associates||Implant deployment apparatus|
|US6361637||Aug 13, 1999||Mar 26, 2002||Gore Enterprise Holdings, Inc.||Method of making a kink resistant stent-graft|
|US6368316||Jun 11, 1998||Apr 9, 2002||Target Therapeutics, Inc.||Catheter with composite stiffener|
|US6383174||Jan 7, 2000||May 7, 2002||Scimed Life Systems, Inc.||Detachable aneurysm neck bridge (II)|
|US6383205||Dec 1, 1999||May 7, 2002||Target Therapeutics, Inc.||Mechanical clot treatment device with distal filter|
|US6422010||Jun 11, 2001||Jul 23, 2002||Nitinol Technologies, Inc.||Manufacturing of Nitinol parts and forms|
|US6451052||Oct 14, 1998||Sep 17, 2002||Scimed Life Systems, Inc.||Tissue supporting devices|
|US6454016||Sep 2, 2000||Sep 24, 2002||Nitinol Technologies, Inc.||Nitinol horseshoes|
|US6471709||Nov 24, 1999||Oct 29, 2002||Vivant Medical, Inc.||Expandable ring percutaneous tissue removal device|
|US6478656||Dec 1, 1998||Nov 12, 2002||Brava, Llc||Method and apparatus for expanding soft tissue with shape memory alloys|
|US6485507||Jul 28, 1999||Nov 26, 2002||Scimed Life Systems||Multi-property nitinol by heat treatment|
|US6488637||Apr 30, 1996||Dec 3, 2002||Target Therapeutics, Inc.||Composite endovascular guidewire|
|US6500112||Aug 27, 1998||Dec 31, 2002||Brava, Llc||Vacuum dome with supporting rim and rim cushion|
|US6517570||Jul 21, 1997||Feb 11, 2003||Gore Enterprise Holdings, Inc.||Exterior supported self-expanding stent-graft|
|US6520986||Jun 26, 2001||Feb 18, 2003||Gore Enterprise Holdings, Inc.||Kink resistant stent-graft|
|US6540767||Feb 8, 2000||Apr 1, 2003||Scimed Life Systems, Inc.||Recoilable thrombosis filtering device and method|
|US6548013||Jan 24, 2001||Apr 15, 2003||Scimed Life Systems, Inc.||Processing of particulate Ni-Ti alloy to achieve desired shape and properties|
|US6551350||Dec 23, 1996||Apr 22, 2003||Gore Enterprise Holdings, Inc.||Kink resistant bifurcated prosthesis|
|US6613072||Jul 18, 1997||Sep 2, 2003||Gore Enterprise Holdings, Inc.||Procedures for introducing stents and stent-grafts|
|US6615702 *||Jan 4, 1999||Sep 9, 2003||Nitinol Technologies, Inc.||Gun barrel|
|US6641527||Jun 11, 2001||Nov 4, 2003||Brava, Llc||Method and apparatus for external tissue distraction with frame having membrane applied with surface tension|
|US6648854||May 14, 1999||Nov 18, 2003||Scimed Life Systems, Inc.||Single lumen balloon-tipped micro catheter with reinforced shaft|
|US6663607||Jul 12, 1999||Dec 16, 2003||Scimed Life Systems, Inc.||Bioactive aneurysm closure device assembly and kit|
|US6685620||Sep 25, 2001||Feb 3, 2004||The Foundry Inc.||Ventricular infarct assist device and methods for using it|
|US6689120||Aug 4, 2000||Feb 10, 2004||Boston Scientific Scimed, Inc.||Reduced profile delivery system|
|US6699176||Dec 1, 1999||Mar 2, 2004||Brava, Llc||External tissue distraction with expanding frames|
|US6715701 *||Jan 14, 1999||Apr 6, 2004||Nitinol Technologies, Inc.||Liquid jet nozzle|
|US6724203 *||Oct 30, 1997||Apr 20, 2004||International Business Machines Corporation||Full wafer test configuration using memory metals|
|US6746461||Aug 15, 2001||Jun 8, 2004||William R. Fry||Low-profile, shape-memory surgical occluder|
|US6783438||Apr 18, 2002||Aug 31, 2004||Ormco Corporation||Method of manufacturing an endodontic instrument|
|US6824553||Aug 25, 2000||Nov 30, 2004||Target Therapeutics, Inc.||High performance braided catheter|
|US6860893||Oct 9, 2001||Mar 1, 2005||Boston Scientific Scimed, Inc.||Stable coil designs|
|US6872217||Jan 23, 2003||Mar 29, 2005||Scimed Life Systems, Inc.||Recoilable thrombosis filtering device and method|
|US6878151||Sep 27, 2001||Apr 12, 2005||Scimed Life Systems, Inc.||Medical retrieval device|
|US6936055||Mar 10, 2000||Aug 30, 2005||Scime Life Systems, Inc.||Detachable aneurysm neck bridge (III)|
|US6997947||Nov 26, 2002||Feb 14, 2006||Boston Scientific Scimed, Inc.||Multi-property nitinol by heat treatment|
|US7005018 *||Mar 14, 2002||Feb 28, 2006||Nitinol Technologies, Inc.||Shape memory parts of 60 Nitinol|
|US7029044||Nov 18, 2003||Apr 18, 2006||General Motors Corporation||Tunable, healable vehicle impact devices|
|US7060083||May 20, 2002||Jun 13, 2006||Boston Scientific Scimed, Inc.||Foldable vaso-occlusive member|
|US7104979||Feb 19, 2002||Sep 12, 2006||Target Therapeutics, Inc.||Catheter with composite stiffener|
|US7128736||Apr 13, 2000||Oct 31, 2006||Boston Scientific Scimed, Inc.||Detachable aneurysm neck closure patch|
|US7166122||Jun 27, 2002||Jan 23, 2007||Boston Scientific Scimed, Inc.||Anchor assemblies in stretch-resistant vaso-occlusive coils|
|US7207111||Mar 10, 2004||Apr 24, 2007||Ormco Corporation||Method of manufacturing an endodontic instrument|
|US7229438||Oct 14, 2004||Jun 12, 2007||Boston Scientific Scimed, Inc.||Ablation probe with distal inverted electrode array|
|US7237313||Dec 5, 2003||Jul 3, 2007||Boston Scientific Scimed, Inc.||Elongated medical device for intracorporal use|
|US7240677||Feb 3, 2003||Jul 10, 2007||Biomedical Enterprises, Inc.||System and method for force, displacement, and rate control of shaped memory material implants|
|US7243408||Feb 9, 2004||Jul 17, 2007||Boston Scientific Scimed, Inc.||Process method for attaching radio opaque markers to shape memory stent|
|US7288111||Mar 26, 2002||Oct 30, 2007||Thoratec Corporation||Flexible stent and method of making the same|
|US7291158||Nov 12, 2004||Nov 6, 2007||Boston Scientific Scimed, Inc.||Cutting balloon catheter having a segmented blade|
|US7316656||Dec 10, 2003||Jan 8, 2008||Boston Scientific Scimed, Inc.||Elongated intracorporal medical device|
|US7410482||Dec 13, 2002||Aug 12, 2008||Boston Scientific-Scimed, Inc.||Detachable aneurysm neck bridge|
|US7416534||Jun 22, 2004||Aug 26, 2008||Boston Scientific Scimed, Inc.||Medical device including actuator|
|US7422563||Feb 21, 2002||Sep 9, 2008||Broncus Technologies, Inc.||Multifunctional tip catheter for applying energy to tissue and detecting the presence of blood flow|
|US7431687||Mar 7, 2005||Oct 7, 2008||Boston Scientific Scimed, Inc.||Percutaneous array delivery system|
|US7455737||Aug 25, 2003||Nov 25, 2008||Boston Scientific Scimed, Inc.||Selective treatment of linear elastic materials to produce localized areas of superelasticity|
|US7455738||Oct 27, 2003||Nov 25, 2008||Paracor Medical, Inc.||Long fatigue life nitinol|
|US7462162||Jul 19, 2004||Dec 9, 2008||Broncus Technologies, Inc.||Antiproliferative devices for maintaining patency of surgically created channels in a body organ|
|US7464548 *||Nov 30, 2005||Dec 16, 2008||The Boeing Company||Shape memory alloy linear actuator|
|US7485122||Jun 27, 2002||Feb 3, 2009||Boston Scientific Scimed, Inc.||Integrated anchor coil in stretch-resistant vaso-occlusive coils|
|US7524318||Oct 28, 2004||Apr 28, 2009||Boston Scientific Scimed, Inc.||Ablation probe with flared electrodes|
|US7524329||Feb 6, 2006||Apr 28, 2009||Wilson-Cook Medical Inc.||Self contracting stent|
|US7527505 *||Jul 3, 2007||May 5, 2009||Alps Electric Co., Ltd.||Semiconductor device contact resistant to deterioration due to heat and method for manufacturing contact|
|US7540845||Sep 5, 2003||Jun 2, 2009||Boston Scientific Scimed, Inc||Medical device coil|
|US7566319||Apr 21, 2004||Jul 28, 2009||Boston Scientific Scimed, Inc.||Traction balloon|
|US7625390||Apr 18, 2005||Dec 1, 2009||Cook Incorporated||Removable vena cava filter|
|US7632288||May 12, 2003||Dec 15, 2009||Boston Scientific Scimed, Inc.||Cutting balloon catheter with improved pushability|
|US7641621||Aug 25, 2003||Jan 5, 2010||Boston Scientific Scimed, Inc.||Elongated intra-lumenal medical device|
|US7645292||Oct 27, 2003||Jan 12, 2010||Boston Scientific Scimed, Inc.||Vaso-occlusive devices with in-situ stiffening elements|
|US7658761||Mar 3, 2005||Feb 9, 2010||Nec Tokin Corporation||Balloon expandable superelastic stent|
|US7670337||Mar 25, 2005||Mar 2, 2010||Boston Scientific Scimed, Inc.||Ablation probe having a plurality of arrays of electrodes|
|US7678107||Mar 10, 2005||Mar 16, 2010||Boston Scientific Scimed, Inc.||Medical needles and electrodes with improved bending stiffness|
|US7682380||Jul 1, 2002||Mar 23, 2010||Gore Enterprise Holdings, Inc.||Kink-resistant bifurcated prosthesis|
|US7695424||Aug 26, 2008||Apr 13, 2010||Boston Scientific Scimed, Inc.||Percutaneous array delivery system|
|US7695484||Mar 24, 2005||Apr 13, 2010||Boston Scientific Scimed, Inc.||Polymer covered vaso-occlusive devices and methods of producing such devices|
|US7699867||Apr 18, 2005||Apr 20, 2010||Cook Incorporated||Removable vena cava filter for reduced trauma in collapsed configuration|
|US7704245||Apr 13, 2004||Apr 27, 2010||Cook Incorporated||Large diameter delivery catheter/sheath|
|US7704248||Dec 21, 2005||Apr 27, 2010||Boston Scientific Scimed, Inc.||Ablation device with compression balloon|
|US7708712||Jul 19, 2004||May 4, 2010||Broncus Technologies, Inc.||Methods and devices for maintaining patency of surgically created channels in a body organ|
|US7713215||Jan 31, 2008||May 11, 2010||Shriver Edgar L||Steering, piercing, anchoring, distending extravascular guidewire|
|US7713264||Jul 23, 2008||May 11, 2010||Boston Scientific Scimed, Inc.||Detachable aneurysm neck bridge|
|US7740798||Apr 23, 2007||Jun 22, 2010||Boston Scientific Scimed, Inc.||Alloy compositions and devices including the compositions|
|US7744583||Feb 3, 2003||Jun 29, 2010||Boston Scientific Scimed||Systems and methods of de-endothelialization|
|US7747314||Dec 30, 2003||Jun 29, 2010||Boston Scientific Scimed, Inc.||Distal assembly for a medical device|
|US7749242||Jun 21, 2004||Jul 6, 2010||Boston Scientific Scimed, Inc.||Expanding vaso-occlusive device|
|US7754047||Apr 8, 2004||Jul 13, 2010||Boston Scientific Scimed, Inc.||Cutting balloon catheter and method for blade mounting|
|US7758520||May 27, 2003||Jul 20, 2010||Boston Scientific Scimed, Inc.||Medical device having segmented construction|
|US7758604||May 29, 2003||Jul 20, 2010||Boston Scientific Scimed, Inc.||Cutting balloon catheter with improved balloon configuration|
|US7758629||Mar 8, 2006||Jul 20, 2010||Thoratec Corporation||Flexible stent and method of making the same|
|US7763045||Feb 11, 2004||Jul 27, 2010||Cook Incorporated||Removable vena cava filter|
|US7779542||Aug 31, 2005||Aug 24, 2010||Ormco Corporation||Method of manufacturing a dental instrument|
|US7780626||Aug 8, 2003||Aug 24, 2010||Boston Scientific Scimed, Inc.||Catheter shaft for regulation of inflation and deflation|
|US7780798||Mar 29, 2007||Aug 24, 2010||Boston Scientific Scimed, Inc.||Medical devices including hardened alloys|
|US7785273||Sep 22, 2003||Aug 31, 2010||Boston Scientific Scimed, Inc.||Guidewire with reinforcing member|
|US7814695||Jan 4, 2008||Oct 19, 2010||Ra Brands, L.L.C.||Composite receiver for firearms|
|US7815599||Dec 10, 2004||Oct 19, 2010||Boston Scientific Scimed, Inc.||Catheter having an ultra soft tip and methods for making the same|
|US7815626||Jun 12, 1998||Oct 19, 2010||Target Therapeutics, Inc.||Catheter with knit section|
|US7833175||Sep 5, 2003||Nov 16, 2010||Boston Scientific Scimed, Inc.||Medical device coil|
|US7875050||Feb 22, 2002||Jan 25, 2011||Target Therapeutics, Inc.||Mechanical clot treatment device|
|US7883474||Apr 30, 1996||Feb 8, 2011||Target Therapeutics, Inc.||Composite braided guidewire|
|US7887557||Aug 14, 2003||Feb 15, 2011||Boston Scientific Scimed, Inc.||Catheter having a cutting balloon including multiple cavities or multiple channels|
|US7892231||Feb 27, 2006||Feb 22, 2011||Boston Scientific Scimed, Inc.||Systems and methods for ablation of tissue|
|US7896898||Jul 30, 2003||Mar 1, 2011||Boston Scientific Scimed, Inc.||Self-centering blood clot filter|
|US7896899||May 23, 2005||Mar 1, 2011||Micro Therapeutics, Inc.||Metallic coils enlaced with biological or biodegradable or synthetic polymers or fibers for embolization of a body cavity|
|US7909812||Sep 6, 2006||Mar 22, 2011||Target Therapeutics, Inc.||Catheter with composite stiffener|
|US7938845||Dec 29, 2006||May 10, 2011||Stryker Corporation||Anchor assemblies in stretch-resistant vaso-occlusive coils|
|US7955345||Feb 16, 2006||Jun 7, 2011||Nexgen Medical Systems, Inc.||Thrombus removal system and process|
|US7959549||Mar 10, 2010||Jun 14, 2011||Boston Scientific Scimed, Inc.||Percutaneous array delivery system|
|US7959631||Mar 10, 2010||Jun 14, 2011||Boston Scientific Scimed, Inc.||Ablation device with compression balloon|
|US7968038||Mar 8, 2010||Jun 28, 2011||Cook Medical Technologies Llc||Large diameter delivery catheter/sheath|
|US7972353||Apr 18, 2005||Jul 5, 2011||Cook Medical Technologies Llc||Removable vena cava filter with anchoring feature for reduced trauma|
|US7972375||Feb 5, 2007||Jul 5, 2011||Boston Scientific Scimed, Inc.||Endoprostheses including metal matrix composite structures|
|US7989042||Nov 24, 2004||Aug 2, 2011||Boston Scientific Scimed, Inc.||Medical devices with highly flexible coated hypotube|
|US7993358||Mar 24, 2009||Aug 9, 2011||Boston Scientific Scimed, Inc.||Cutting balloon catheter having increased flexibility regions|
|US8025495||Aug 27, 2007||Sep 27, 2011||Cook Medical Technologies Llc||Apparatus and method for making a spider occlusion device|
|US8038691||Nov 12, 2004||Oct 18, 2011||Boston Scientific Scimed, Inc.||Cutting balloon catheter having flexible atherotomes|
|US8043322||Apr 18, 2005||Oct 25, 2011||Cook Medical Technologies Llc||Removable vena cava filter having inwardly positioned anchoring hooks in collapsed configuration|
|US8047552 *||Feb 20, 2003||Nov 1, 2011||Nitinol Technology, Inc.||Nitinol ice blades|
|US8052679||Apr 30, 2007||Nov 8, 2011||Boston Scientific Scimed, Inc.||Ablation probe with electrode array and tissue penetrating distal tip electrode|
|US8066757||Dec 28, 2010||Nov 29, 2011||Mindframe, Inc.||Blood flow restoration and thrombus management methods|
|US8070791||Dec 29, 2010||Dec 6, 2011||Mindframe, Inc.||Multiple layer embolus removal|
|US8088140||May 29, 2009||Jan 3, 2012||Mindframe, Inc.||Blood flow restorative and embolus removal methods|
|US8137292||Jun 27, 2007||Mar 20, 2012||Boston Scientific Scimed, Inc.||Elongated medical device for intracorporal use|
|US8152805||Jan 25, 2010||Apr 10, 2012||Boston Scientific Scimed, Inc.||Ablation probe having a plurality of arrays of electrodes|
|US8167901||Sep 27, 2005||May 1, 2012||Cook Medical Technologies Llc||Removable vena cava filter comprising struts having axial bends|
|US8172862||Mar 12, 2010||May 8, 2012||Stryker Corporation||Polymer covered vaso-occlusive devices and methods of producing such devices|
|US8172864||Dec 15, 2009||May 8, 2012||Boston Scientific Scimed, Inc.||Balloon catheter with improved pushability|
|US8181324||Oct 18, 2010||May 22, 2012||Target Therapeutics, Inc.||Catheter with knit section|
|US8197493||Dec 29, 2010||Jun 12, 2012||Mindframe, Inc.||Method for providing progressive therapy for thrombus management|
|US8216226||Apr 7, 2008||Jul 10, 2012||Boston Scientific Scimed, Inc.||Radiofrequency ablation device|
|US8216229||Jan 31, 2011||Jul 10, 2012||Boston Scientific Scimed, Inc.||Systems and methods for ablation of tissue|
|US8221412||Jan 25, 2010||Jul 17, 2012||Boston Scientific Scimed, Inc.||Medical needles and electrodes with improved bending stiffness|
|US8221491||Oct 26, 1999||Jul 17, 2012||Boston Scientific Scimed, Inc.||Tissue supporting devices|
|US8222566||Feb 15, 2005||Jul 17, 2012||Boston Scientific Scimed, Inc.||Elongated intracorporal medical device|
|US8246648||Nov 10, 2008||Aug 21, 2012||Cook Medical Technologies Llc||Removable vena cava filter with improved leg|
|US8246650||Mar 1, 2010||Aug 21, 2012||Cook Medical Technologies Llc||Removable vena cava filter|
|US8246651||Mar 4, 2010||Aug 21, 2012||Cook Medical Technologies Llc||Removable vena cava filter for reduced trauma in collapsed configuration|
|US8246672||Dec 19, 2008||Aug 21, 2012||Cook Medical Technologies Llc||Endovascular graft with separately positionable and removable frame units|
|US8267923||Apr 27, 2010||Sep 18, 2012||Stryker Corporation||Detachable aneurysm neck bridge|
|US8267955||Jan 20, 2011||Sep 18, 2012||Tyco Healthcare Group Lp||Metallic coils enlaced with fibers for embolization of a body cavity|
|US8303520||Aug 25, 2008||Nov 6, 2012||Boston Scientific Scimed, Inc.||Medical device including actuator|
|US8308751||Jan 9, 2006||Nov 13, 2012||Stryker Corporation||Foldable vaso-occlusive member|
|US8308752||Aug 27, 2007||Nov 13, 2012||Cook Medical Technologies Llc||Barrel occlusion device|
|US8317772||Mar 10, 2011||Nov 27, 2012||Target Therapeutics, Inc.||Catheter with composite stiffener|
|US8323328||Sep 9, 2002||Dec 4, 2012||W. L. Gore & Associates, Inc.||Kink resistant stent-graft|
|US8337519||Jul 10, 2003||Dec 25, 2012||Boston Scientific Scimed, Inc.||Embolic protection filtering device|
|US8361096||Sep 19, 2011||Jan 29, 2013||Boston Scientific Scimed, Inc.||Cutting balloon catheter having flexible atherotomes|
|US8366708||Jun 29, 2012||Feb 5, 2013||Boston Scientific Scimed, Inc.||Medical needles and electrodes with improved bending stiffness|
|US8372062||Aug 15, 2012||Feb 12, 2013||Stryker Corporation||Detachable aneurysm neck bridge|
|US8409167||Oct 5, 2006||Apr 2, 2013||Broncus Medical Inc||Devices for delivering substances through an extra-anatomic opening created in an airway|
|US8409195||Mar 18, 2012||Apr 2, 2013||Boston Scientific Scimed, Inc.||Ablation probe having a plurality of arrays of electrodes|
|US8449532||Jul 29, 2011||May 28, 2013||Stryker Corporation||Detachable aneurysm neck bridge|
|US8449566||Jun 2, 2011||May 28, 2013||Nexgen Medical Systems, Inc.||Thrombus removal system and process|
|US8469954||Jun 29, 2012||Jun 25, 2013||Boston Scientific Scimed, Inc.||Radiofrequency ablation device|
|US8480697||Jun 2, 2011||Jul 9, 2013||Nexgen Medical Systems, Inc.||Thrombus removal system and process|
|US8480707||Jul 31, 2009||Jul 9, 2013||Cook Medical Technologies Llc||Closure device and method for occluding a bodily passageway|
|US8485992||Jul 20, 2010||Jul 16, 2013||Boston Scientific Scimed, Inc.||Medical device having segmented construction|
|US8486101||May 19, 2010||Jul 16, 2013||Stryker Corporation||Expanding vaso-occlusive device|
|US8486104||Dec 13, 2010||Jul 16, 2013||Stryker Corporation||Mechanical clot treatment device with distal filter|
|US8518037||Oct 28, 2008||Aug 27, 2013||Boston Scientific Scimed, Inc.||Radiofrequency ablation device|
|US8529556||Mar 11, 2013||Sep 10, 2013||Stryker Corporation||Detachable aneurysm neck bridge|
|US8545514||Apr 10, 2009||Oct 1, 2013||Covidien Lp||Monorail neuro-microcatheter for delivery of medical devices to treat stroke, processes and products thereby|
|DE1533360B1 *||Aug 8, 1966||Jan 7, 1971||Alexander G Rozner||Verfahren zur Herstellung von nahezu stoechiometrischen Nickel-Titan-Legierungen und Verwendung derselben|
|DE1558715B2 *||Aug 29, 1967||May 31, 1972||Wang Frederick E||Legierungen mit martensitischem uebergang|
|DE2331568A1 *||Jun 20, 1973||Jan 31, 1974||Raychem Corp||Vorrichtung zur temperaturabhaengigen herstellung einer verbindung, insbesondere einer elektrischen verbindung|
|DE2702542A1 *||Jan 21, 1977||Jul 28, 1977||Raychem Corp||Waermerueckstellbare, hohle metallische kupplung|
|DE2748383A1 *||Oct 28, 1977||May 11, 1978||Raychem Sa Nv||Waermerueckstellfaehige gegenstaende|
|DE2900518A1 *||Jan 8, 1979||Jul 19, 1979||Raychem Sa Nv||Verfahren zur bildung einer dichten abzweigenden verbindung und zur durchfuehrung des verfahrens bestimmte klammer|
|DE2954743C2 *||Jan 8, 1979||Oct 31, 1996||Raychem Sa Nv||Clips for sealing branches from distributor boxes|
|DE3007307A1 *||Feb 27, 1980||Jul 23, 1981||Bbc Brown Boveri & Cie||Schrumpfverbindung und verfahren zu deren herstellung|
|DE3633988A1 *||Oct 6, 1986||Apr 16, 1987||Nippon Musical Instruments Mfg||Metalldichtung|
|DE3736399A1 *||Oct 28, 1987||Jul 7, 1988||Medinvent Sa||Vorrichtung fuer die transluminale implantation|
|DE3802919A1 *||Feb 2, 1988||Aug 18, 1988||Systemtechnik Gmbh||Stellelement mit vorgeformtem element aus einem beheizbaren memorymetall|
|EP0016805A1 *||Mar 11, 1980||Oct 15, 1980||Frederick E Wang||Energy conversion system.|
|EP0250776A1||Jun 29, 1984||Jan 7, 1988||RAYCHEM CORPORATION (a Delaware corporation)||Method for detecting and obtaining information about changes in variables|
|EP0711532A1||Nov 13, 1995||May 15, 1996||Target Therapeutics, Inc.||Delivery device|
|EP0715863A2||Nov 10, 1995||Jun 12, 1996||Target Therapeutics, Inc.||Catheter|
|EP0778037A1||Dec 2, 1996||Jun 11, 1997||Target Therapeutics, Inc.||Braided body balloon catheter|
|EP0826342A1||Aug 20, 1997||Mar 4, 1998||Target Therapeutics, Inc.||Electrolytically deployable braided vaso-occlusion device|
|EP1900331A2||Oct 17, 2001||Mar 19, 2008||Boston Scientific Scimed, Inc.||Non-overlapping spherical three-dimensional vaso-occlusive coil|
|EP1941845A1||Apr 19, 1996||Jul 9, 2008||Micrus Endovascular Corporation||Anatomically shaped vasoocclusive device and method of making same|
|EP1955665A2||Mar 27, 2002||Aug 13, 2008||Boston Scientific Scimed, Inc.||Embolic devices capable of in-situ reinforcement|
|EP2077090A1||Feb 16, 2001||Jul 8, 2009||Thomas J. Fogarty||Improved device for accurately marking tissue|
|EP2298154A2||Feb 16, 2001||Mar 23, 2011||Fogarty, Thomas J.||Improved device for accurately marking tissue|
|EP2316355A1||May 23, 2005||May 4, 2011||Micro Therapeutics, Inc.||Metallic coils enlaced with biological or biodegradable or synthetic polymers or fibers for embolization of a body cavity|
|EP2397107A2||Aug 25, 2006||Dec 21, 2011||West Hertfordshire Hospitals Nhs Trust||Surgical scaffold|
|EP2404559A1||Feb 2, 2006||Jan 11, 2012||Stryker Corporation||Vaso-occlusive devices including non-biodegradable biomaterials|
|EP2446919A2||Feb 9, 2007||May 2, 2012||C.R. Bard Inc.||Coaxial PTA balloon|
|EP2478850A2||May 13, 2003||Jul 25, 2012||Stryker Corporation||Foldable vasco-occlusive member|
|WO1999064098A1||Jun 11, 1999||Dec 16, 1999||Scimed Life Systems Inc||Catheter with composite stiffener|
|WO2000032084A2 *||Dec 1, 1999||Jun 8, 2000||Bio Mecanica Inc||External tissue distraction with expanding frames|
|WO2001008600A2||Jun 22, 2000||Feb 8, 2001||Scimed Life Systems Inc||Nitinol medical devices having variable stifness by heat treatment|
|WO2001013984A2||Aug 24, 2000||Mar 1, 2001||Glenn Frazer||Lumbar drainage catheter|
|WO2003072206A2 *||Feb 20, 2003||Sep 4, 2003||Gerald J Julien||Nitinol ice blades|
|WO2006104682A1||Mar 13, 2006||Oct 5, 2006||Boston Scient Scimed Inc||Ablation probe having a plurality of arrays of electrodes|
|WO2011044459A2||Oct 8, 2010||Apr 14, 2011||Gore Enterprise Holdings, Inc.||Bifurcated highly conformable medical device branch access|
|WO2012008579A1||Jul 15, 2011||Jan 19, 2012||Tohoku University||Highly elastic stent and production method for highly elastic stent|
|WO2012136950A1||Mar 28, 2012||Oct 11, 2012||HAINES, Marie-Claire||Ear scaffold|
|WO2013106694A2||Jan 11, 2013||Jul 18, 2013||W.L. Gore & Associates, Inc.||Occlusion devices and methods of their manufacture and use|
| || |
|U.S. Classification||148/426, 337/382, 236/101.00R, 148/312, 337/140, 374/E05.31, 337/40|
|International Classification||G01K5/48, C22C19/00, F03G7/06, G01K5/00, C22F1/00|
|Cooperative Classification||C22F1/006, F03G7/065, C22C19/007, G01K5/483|
|European Classification||C22C19/00D, C22F1/00M, G01K5/48B, F03G7/06B|