WO1993023137A1 - Filter cartridge - Google Patents
Filter cartridge Download PDFInfo
- Publication number
- WO1993023137A1 WO1993023137A1 PCT/US1992/004388 US9204388W WO9323137A1 WO 1993023137 A1 WO1993023137 A1 WO 1993023137A1 US 9204388 W US9204388 W US 9204388W WO 9323137 A1 WO9323137 A1 WO 9323137A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- tube
- cartridge
- filter medium
- inch
- Prior art date
Links
- 239000000428 dust Substances 0.000 abstract description 9
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 4
- 239000012528 membrane Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000004382 potting Methods 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 239000012065 filter cake Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 241001417527 Pempheridae Species 0.000 description 1
- 229920001944 Plastisol Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004999 plastisol Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
- B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/111—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1692—Other shaped material, e.g. perforated or porous sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
- B01D46/2414—End caps including additional functions or special forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
Definitions
- This invention relates to cartridge filters for use in filter systems designed to remove solid particles or dust from large volumes of gases, including air, in which they are suspended, such as industrial sweepers, bag houses, plenum type dust collectors, and the like.
- Filtration systems which employ cartridge filters employ a porous filter material through which the gaseous medium passes, the solids being retained on the upstream surface of the filter medium as the gases pass through.
- the separated solids build up on the upstream side of the filter medium with time and must be removed before the thickness of the accumulated solids layer causes excessive pressure drop.
- the filter cake is dislodged from the filter elements by means of a pulse of compressed air admitted to the filter element, a reverse air flow, or a shaker mechanism.
- the filter medium flexes under the force of the air pulse to dislodge the filter cake and the flow of gases being filtered is maintained while such flexing and dislodging is taking place.
- Cartridge filters generally have a folded or pleated filter medium arranged cylindrically around a perforated cylindrical supporting member or tube.
- the supporting tubes and filter medium are adhered to end caps which prevent leakage around the filter medium and provide support for the filter medium.
- the porous support tube can made of a porous plastic, e.g., one having interconnecting pores from one side to the other.
- the tube should be rigid in order to provide support to the filter media.
- the tube can be made of porous polyethylene, polypropylene, polyvinylstyrene, polyamide, polyester or the like.
- the tube will be a perforated metal tube such as steel, iron or most preferably expanded aluminum.
- the filter media can withstand over 2 grains per cubic foot (4.5 mg per liter) of particle filled gases, and preferably over 5 grains (11.4 mg per liter).
- the cartridges installed in the collector were 24 inch (60.96 cm) long with an outside diameter of 5.5 inch (13.97 cm) and an inside diameter of 3.5 inch (8.89 cm). They were constructed in the same manner as described in Example 1; however, the filter cores were constructed with expanded mild steel instead of expanded aluminum. Each filter contained 50 pleats, so the total filter area in the collector was 283 ft 2 (26.29 m 2 ).
- a test was conducted for 14 hours during which the collector was run with an airflow of 400 cubic feet per minute (679 cubic meter per hour) and a dust loading greater than 10 grains per cubic feet (22.4 mg per liter) of air. Each filter was pulsed every 65 seconds at a pulse pressure of 35 pounds per square inch (2.46 Kg/cm 2 ). The presure drop measured across the filter media was 0.5 inch (1.27 cm) of water and remained at this level for the duration of the test.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU24965/92A AU664195B2 (en) | 1992-05-08 | 1992-05-26 | Filter cartridge |
CA002132702A CA2132702C (en) | 1992-05-08 | 1992-05-26 | Filter cartridge |
JP5520160A JPH07506532A (en) | 1992-05-08 | 1992-05-26 | filter cartridge |
EP92918617A EP0639103B1 (en) | 1992-05-08 | 1992-05-26 | Filter cartridge |
DE69209095T DE69209095T2 (en) | 1992-05-08 | 1992-05-26 | FILTER CARTRIDGE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US880,810 | 1992-05-08 | ||
US07880810 US5207812B1 (en) | 1992-05-08 | 1992-05-08 | Filter cartridge |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993023137A1 true WO1993023137A1 (en) | 1993-11-25 |
Family
ID=25377152
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1992/004388 WO1993023137A1 (en) | 1992-05-08 | 1992-05-26 | Filter cartridge |
Country Status (9)
Country | Link |
---|---|
US (1) | US5207812B1 (en) |
EP (1) | EP0639103B1 (en) |
JP (1) | JPH07506532A (en) |
AU (1) | AU664195B2 (en) |
CA (1) | CA2132702C (en) |
DE (1) | DE69209095T2 (en) |
FR (1) | FR2690853A1 (en) |
IT (1) | ITTO930317A1 (en) |
WO (1) | WO1993023137A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6027553A (en) * | 1997-04-11 | 2000-02-22 | Daikin Industries, Ltd. | Air filter unit and method for manufacturing the same |
US6336948B1 (en) | 1996-08-09 | 2002-01-08 | Daikin Industries, Ltd. | Fire-retardant filter medium and air filter unit |
US8523974B2 (en) | 2011-08-18 | 2013-09-03 | General Electric Company | Filter core for use with pleated filter cartridges |
WO2015089353A1 (en) * | 2013-12-13 | 2015-06-18 | Bha Altair, Llc | Manufacturing molded pleated filter cartridge with no horizontal extending ledges |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1994022553A1 (en) * | 1993-03-29 | 1994-10-13 | W.L. Gore & Associates, Inc. | Membrane vent filter cartridge |
USD380535S (en) * | 1993-09-10 | 1997-07-01 | Carsten Joergensen | Combined filter cartridge and lid therefor |
USRE37163E1 (en) * | 1994-05-06 | 2001-05-08 | Bha Group Holdings, Inc. | Unitary filter cartridge |
US6726735B1 (en) | 1994-05-06 | 2004-04-27 | Bha Group Holdings, Inc. | Unitary filter cartridge |
US5632791A (en) * | 1994-12-06 | 1997-05-27 | Bha Group, Inc. | Unitary filter cartridge |
US5478372A (en) * | 1995-02-08 | 1995-12-26 | W. L. Gore & Associates, Inc. | High temperature, chemical resistant laminate for filtration systems |
US5536290A (en) * | 1995-02-17 | 1996-07-16 | W. L. Gore & Associates, Inc. | Pleated cartridge filter attachment for top loading filter assemblies |
US5928414A (en) * | 1996-07-11 | 1999-07-27 | W. L. Gore & Associates, Inc. | Cleanable filter media and filter elements |
TW438679B (en) * | 1996-08-09 | 2001-06-07 | Daikin Ind Ltd | Filter medium and air filter unit using the same |
US5746792A (en) * | 1996-10-25 | 1998-05-05 | Bha Group Holdings, Inc. | Dust collector filter element and supporting structure |
US5730766A (en) * | 1996-11-05 | 1998-03-24 | Bha Group, Inc. | Non-round unitary filter cartridge |
US6008146A (en) * | 1997-09-02 | 1999-12-28 | Gore Enterprise Holdings, Inc. | Filter material and cartridge filters made therefrom |
US5895510A (en) * | 1997-10-22 | 1999-04-20 | Dana Corporation | Air filter assembly |
US6017379A (en) * | 1998-04-29 | 2000-01-25 | Mac Equipment, Inc. | Cartridge filter |
JP3365617B2 (en) * | 1998-06-11 | 2003-01-14 | 日東電工株式会社 | Manufacturing method of filter medium for air filter |
GB9816118D0 (en) * | 1998-07-23 | 1998-09-23 | Pall Corp | Filter assemblies |
US6110249A (en) | 1999-03-26 | 2000-08-29 | Bha Technologies, Inc. | Filter element with membrane and bicomponent substrate |
US6334881B1 (en) * | 1999-04-20 | 2002-01-01 | Gore Enterprise Holdings, Inc. | Filter media |
US6233790B1 (en) | 1999-06-30 | 2001-05-22 | Bha Group Holdings, Inc. | Outer strap for air filter cartridge |
USD435640S (en) * | 1999-08-26 | 2000-12-26 | Bha Group Holdings, Inc. | Combined cartridge filter and tube frame structure |
US6358292B1 (en) | 2000-06-02 | 2002-03-19 | Bha Group Holdings, Inc. | Pleated filter element with reusable mounting plate |
US6409785B1 (en) | 2000-08-07 | 2002-06-25 | Bha Technologies, Inc. | Cleanable HEPA filter media |
US6368388B1 (en) | 2000-08-24 | 2002-04-09 | Donaldson Company Inc. | Filter construction apparatus and method |
US6808553B2 (en) * | 2001-06-13 | 2004-10-26 | Nitto Denko Corporation | Filter medium for turbine and methods of using and producing the same |
US7501003B2 (en) * | 2004-03-02 | 2009-03-10 | Gore Enterprise Holdings | Composite filter media |
BRPI0510042B8 (en) | 2004-04-20 | 2021-06-22 | Genzyme Corp | implant similar to surgical mesh |
US7138057B2 (en) * | 2004-07-22 | 2006-11-21 | Gore Enterprise Holdings, Inc. | Filter media |
US7294163B1 (en) | 2005-03-21 | 2007-11-13 | Lacroix Paul E | Cartridge filter |
US7481862B2 (en) * | 2005-06-09 | 2009-01-27 | Purolator Filters Na Llc | Filter assembly using adhesive center tube |
DE602005026932D1 (en) * | 2005-07-14 | 2011-04-28 | Gore W L & Ass Gmbh | Cooling fan unit for cooling electronic components |
US8882874B1 (en) * | 2005-10-13 | 2014-11-11 | Jonathan Cross | Flexible, multi-cartridge, reconfigurable/selectable air contaminant control system and method for fuel cells |
US7837756B2 (en) | 2007-04-05 | 2010-11-23 | Aaf-Mcquay Inc. | Filter with ePTFE and method of forming |
US8147583B2 (en) * | 2007-06-08 | 2012-04-03 | Gore Enterprise Holdings, Inc. | Multiple layer filter media |
US8673040B2 (en) | 2008-06-13 | 2014-03-18 | Donaldson Company, Inc. | Filter construction for use with air in-take for gas turbine and methods |
US20100139224A1 (en) * | 2008-12-05 | 2010-06-10 | E. I. Du Pont De Nemours And Company | Filter media with nanoweb layer |
US8696035B2 (en) | 2010-10-27 | 2014-04-15 | Bha Altair, Llc | Venturi adapter |
US8580004B1 (en) | 2011-01-21 | 2013-11-12 | iFil USA, LLC | Unitary filter cartridge with flow transition mouth |
US20110209612A1 (en) * | 2011-04-15 | 2011-09-01 | Bha Group, Inc. | Utilization of powdered sorbent for mercury control from coal-fired power plants |
BR112014028595B1 (en) | 2012-05-17 | 2020-12-29 | Donaldson Company, Inc. | filter system and method for removing particulate matter from a dirty air stream |
WO2013173692A1 (en) | 2012-05-17 | 2013-11-21 | Donaldson Company, Inc. | Air filter assembly having venturi elements with extended pulse outlets |
CN107252599B (en) | 2013-03-04 | 2019-12-17 | 唐纳森公司 | Air filter system and method of using same |
PL2969117T3 (en) | 2013-03-15 | 2021-11-02 | Donaldson Company, Inc. | Ovate tubular filter cartridges and filter systems using the same |
US20140366733A1 (en) * | 2013-06-18 | 2014-12-18 | Bha Altair, Llc | Filter media and method of forming the same |
EP3068512A4 (en) * | 2013-11-13 | 2016-11-02 | Delstar Technologies Inc | Cartridge filter |
US9616371B1 (en) | 2014-05-06 | 2017-04-11 | iFil USA, LLC | Cartridge filter with flow transition insert |
JP2016195962A (en) * | 2015-04-02 | 2016-11-24 | 賢 飯田 | Dust collector and cartridge filter |
EP3120917A1 (en) * | 2015-07-21 | 2017-01-25 | Carl Freudenberg KG | Filter cartridge with welded seam |
US11883763B2 (en) | 2019-09-13 | 2024-01-30 | Donaldson Company, Inc. | Air filter systems, filter bag assemblies, filter bags and methods |
US20220297041A1 (en) | 2021-03-16 | 2022-09-22 | Donaldson Company, Inc. | Enlarged opening filter bags, support assemblies, and filter bag assemblies |
CN117355368A (en) | 2021-03-16 | 2024-01-05 | 唐纳森公司 | Foldable filter bag, filter bag support assembly and filter bag assembly |
US20230191303A1 (en) | 2021-12-21 | 2023-06-22 | Donaldson Company, Inc. | Filter systems with filter bag assemblies including filter bags with radial seal gaskets |
WO2024059102A1 (en) | 2022-09-14 | 2024-03-21 | Donaldson Company, Inc. | Filters and filter assemblies with canted openings, collectors and methods of use |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0139822A2 (en) * | 1983-09-09 | 1985-05-08 | Kurashiki Boseki Kabushiki Kaisha | Filter element and its production |
EP0217482A1 (en) * | 1985-07-19 | 1987-04-08 | Hr Textron Inc. | Filter element |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3716436A (en) * | 1970-03-16 | 1973-02-13 | Pall Corp | Process for making a back pressure resistant filter element |
US4436536A (en) * | 1982-09-29 | 1984-03-13 | Flex-Kleen Corporation | Dust collecting filter cartridge and attachment structure for suspending same from baghouse tube sheet |
US4878930A (en) * | 1984-03-15 | 1989-11-07 | W. L. Gore & Associates, Inc. | Filter cartridge |
US4732678A (en) * | 1986-05-01 | 1988-03-22 | Wix Corporation | Filter body having closely adjacent filter material |
JP2507456B2 (en) * | 1987-07-28 | 1996-06-12 | 倉敷紡績株式会社 | Filter-element and its manufacturing method |
-
1992
- 1992-05-08 US US07880810 patent/US5207812B1/en not_active Expired - Lifetime
- 1992-05-26 DE DE69209095T patent/DE69209095T2/en not_active Expired - Fee Related
- 1992-05-26 AU AU24965/92A patent/AU664195B2/en not_active Ceased
- 1992-05-26 EP EP92918617A patent/EP0639103B1/en not_active Expired - Lifetime
- 1992-05-26 JP JP5520160A patent/JPH07506532A/en active Pending
- 1992-05-26 WO PCT/US1992/004388 patent/WO1993023137A1/en active IP Right Grant
- 1992-05-26 CA CA002132702A patent/CA2132702C/en not_active Expired - Fee Related
-
1993
- 1993-04-07 FR FR9304113A patent/FR2690853A1/en active Pending
- 1993-05-07 IT IT93TO000317A patent/ITTO930317A1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0139822A2 (en) * | 1983-09-09 | 1985-05-08 | Kurashiki Boseki Kabushiki Kaisha | Filter element and its production |
EP0217482A1 (en) * | 1985-07-19 | 1987-04-08 | Hr Textron Inc. | Filter element |
Non-Patent Citations (1)
Title |
---|
Dialog Information Services, File 351, World Patent Index 81-92, Dialog accession no. 007816581, WPI accession no. 89-081693/11, KURABO IND KK: "Heated tubular filter element - comprises filter membrane with porous support on both sides and end caps sealed with reinforced ends", JP 1034403, A, 890203, 8911 (Basic) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6336948B1 (en) | 1996-08-09 | 2002-01-08 | Daikin Industries, Ltd. | Fire-retardant filter medium and air filter unit |
US6027553A (en) * | 1997-04-11 | 2000-02-22 | Daikin Industries, Ltd. | Air filter unit and method for manufacturing the same |
US8523974B2 (en) | 2011-08-18 | 2013-09-03 | General Electric Company | Filter core for use with pleated filter cartridges |
WO2015089353A1 (en) * | 2013-12-13 | 2015-06-18 | Bha Altair, Llc | Manufacturing molded pleated filter cartridge with no horizontal extending ledges |
Also Published As
Publication number | Publication date |
---|---|
DE69209095D1 (en) | 1996-04-18 |
AU2496592A (en) | 1993-12-13 |
CA2132702A1 (en) | 1993-11-25 |
EP0639103B1 (en) | 1996-03-13 |
FR2690853A1 (en) | 1993-11-12 |
EP0639103A1 (en) | 1995-02-22 |
DE69209095T2 (en) | 1996-10-02 |
ITTO930317A0 (en) | 1993-05-07 |
CA2132702C (en) | 1999-09-21 |
US5207812B1 (en) | 1996-10-01 |
AU664195B2 (en) | 1995-11-09 |
US5207812A (en) | 1993-05-04 |
JPH07506532A (en) | 1995-07-20 |
ITTO930317A1 (en) | 1993-11-08 |
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