DE3689815D1 - Verwendung von Zusammensetzungen als reversible optische Aufzeichnungsmaterialien. - Google Patents
Verwendung von Zusammensetzungen als reversible optische Aufzeichnungsmaterialien.Info
- Publication number
- DE3689815D1 DE3689815D1 DE3689815T DE3689815T DE3689815D1 DE 3689815 D1 DE3689815 D1 DE 3689815D1 DE 3689815 T DE3689815 T DE 3689815T DE 3689815 T DE3689815 T DE 3689815T DE 3689815 D1 DE3689815 D1 DE 3689815D1
- Authority
- DE
- Germany
- Prior art keywords
- compositions
- optical recording
- recording materials
- reversible optical
- reversible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B7/2433—Metals or elements of groups 13, 14, 15 or 16 of the Periodic System, e.g. B, Si, Ge, As, Sb, Bi, Se or Te
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24312—Metals or metalloids group 14 elements (e.g. Si, Ge, Sn)
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24314—Metals or metalloids group 15 elements (e.g. Sb, Bi)
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
- G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers
- G11B2007/24302—Metals or metalloids
- G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0045—Recording
- G11B7/00454—Recording involving phase-change effects
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
- G11B7/2533—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising resins
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
- G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
- G11B7/257—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
- G11B7/266—Sputtering or spin-coating layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/146—Laser beam
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60211471A JPS6273439A (ja) | 1985-09-25 | 1985-09-25 | 光学情報記録部材 |
JP60211470A JPS6273438A (ja) | 1985-09-25 | 1985-09-25 | 光学情報記録部材 |
JP61053034A JP2584741B2 (ja) | 1986-03-11 | 1986-03-11 | 書換え可能な光学情報記録部材 |
JP61053033A JP2592800B2 (ja) | 1986-03-11 | 1986-03-11 | 光学情報記録部材 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3689815D1 true DE3689815D1 (de) | 1994-06-01 |
DE3689815T2 DE3689815T2 (de) | 1994-11-17 |
Family
ID=27462854
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3689815T Expired - Lifetime DE3689815T2 (de) | 1985-09-25 | 1986-09-25 | Verwendung von Zusammensetzungen als reversible optische Aufzeichnungsmaterialien. |
DE3689886T Expired - Fee Related DE3689886T2 (de) | 1985-09-25 | 1986-09-25 | Reversibler optischer Informationsaufzeichnungsträger. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3689886T Expired - Fee Related DE3689886T2 (de) | 1985-09-25 | 1986-09-25 | Reversibler optischer Informationsaufzeichnungsträger. |
Country Status (5)
Country | Link |
---|---|
US (4) | US5278011A (de) |
EP (2) | EP0217293B1 (de) |
KR (1) | KR900009187B1 (de) |
CN (1) | CN1010519B (de) |
DE (2) | DE3689815T2 (de) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1010519B (zh) * | 1985-09-25 | 1990-11-21 | 松下电器产业株式会社 | 可逆的光学情报记录介质 |
JPS63251290A (ja) * | 1987-04-08 | 1988-10-18 | Hitachi Ltd | 光記録媒体と記録・再生方法及びその応用 |
DE3885156T2 (de) * | 1987-06-11 | 1994-03-17 | Asahi Chemical Ind | Verfahren zum Aufzeichnen und Löschen von Daten. |
US5273861A (en) * | 1987-12-04 | 1993-12-28 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium, method of making an optical information recording medium and method of recording/reproducing optical information |
JPH081707B2 (ja) * | 1987-12-04 | 1996-01-10 | 松下電器産業株式会社 | 光学的情報記録媒体 |
US5063097A (en) * | 1988-12-16 | 1991-11-05 | Toray Industries, Inc. | Optical recording medium |
US5268254A (en) * | 1989-02-28 | 1993-12-07 | Fuji Xerox Co., Ltd. | Optical recording medium |
EP0392179B1 (de) * | 1989-02-28 | 1995-11-08 | Fuji Xerox Co., Ltd. | Optischer Aufzeichnungsträger |
US5128099A (en) * | 1991-02-15 | 1992-07-07 | Energy Conversion Devices, Inc. | Congruent state changeable optical memory material and device |
MY139798A (en) * | 1991-06-04 | 2009-10-30 | Mitsubishi Electric Corp | Multiple data surface data storage system and method |
EP0766862A1 (de) * | 1994-06-23 | 1997-04-09 | Koninklijke Philips Electronics N.V. | Optische informationsträger |
JPH0917032A (ja) * | 1995-06-27 | 1997-01-17 | Toshiba Corp | 光情報記録媒体 |
US6821707B2 (en) * | 1996-03-11 | 2004-11-23 | Matsushita Electric Industrial Co., Ltd. | Optical information recording medium, producing method thereof and method of recording/erasing/reproducing information |
KR100586874B1 (ko) * | 1997-11-07 | 2006-06-07 | 코닌클리케 필립스 일렉트로닉스 엔.브이. | 게르마늄-안티몬-텔루르 합금으로 구성된 재기록 가능한 광학 정보매체 |
TW466480B (en) * | 1999-03-15 | 2001-12-01 | Matsushita Electric Ind Co Ltd | Information recording medium and method for manufacturing the same |
TW484126B (en) | 1999-03-26 | 2002-04-21 | Matsushita Electric Ind Co Ltd | Manufacturing and recording regeneration method for information record medium |
DE60037146T2 (de) * | 1999-05-19 | 2008-03-06 | Mitsubishi Kagaku Media Co. Ltd. | Optisches Aufzeichnungsverfahren und Medium |
TW487682B (en) | 2000-08-10 | 2002-05-21 | Nat Science Council | Rewritable phase-change type optical information recording composition and optical disk containing the same |
EP1220214B1 (de) * | 2000-12-19 | 2004-08-11 | National Science Council | Optische Platte und Phasenwechselmaterial für wiederholbares Aufzeichnen |
US7113474B2 (en) * | 2001-09-01 | 2006-09-26 | Energy Conversion Devices, Inc. | Increased data storage in optical data storage and retrieval systems using blue lasers and/or plasmon lenses |
US7425735B2 (en) * | 2003-02-24 | 2008-09-16 | Samsung Electronics Co., Ltd. | Multi-layer phase-changeable memory devices |
US7115927B2 (en) * | 2003-02-24 | 2006-10-03 | Samsung Electronics Co., Ltd. | Phase changeable memory devices |
US7402851B2 (en) * | 2003-02-24 | 2008-07-22 | Samsung Electronics Co., Ltd. | Phase changeable memory devices including nitrogen and/or silicon and methods for fabricating the same |
JP4181490B2 (ja) * | 2003-03-25 | 2008-11-12 | 松下電器産業株式会社 | 情報記録媒体とその製造方法 |
TW200529414A (en) * | 2004-02-06 | 2005-09-01 | Renesas Tech Corp | Storage |
TW200601322A (en) * | 2004-04-07 | 2006-01-01 | Hitachi Maxell | Information recording medium |
JP4339356B2 (ja) | 2004-07-28 | 2009-10-07 | パナソニック株式会社 | 情報記録媒体 |
CN101194310B (zh) | 2005-06-07 | 2011-03-02 | 松下电器产业株式会社 | 信息记录介质及其制造方法 |
TWI312998B (en) * | 2005-12-23 | 2009-08-01 | Ind Tech Res Inst | Phase-change recording layer and method of manufacturing the same and phase-change recording cell using such recording layer |
KR100782482B1 (ko) * | 2006-05-19 | 2007-12-05 | 삼성전자주식회사 | GeBiTe막을 상변화 물질막으로 채택하는 상변화 기억 셀, 이를 구비하는 상변화 기억소자, 이를 구비하는 전자 장치 및 그 제조방법 |
EP2055495A4 (de) * | 2006-08-08 | 2010-11-03 | Panasonic Corp | Datenaufzeichnungsmedium, herstellungsverfahren dafür und sputter-target |
KR100810615B1 (ko) * | 2006-09-20 | 2008-03-06 | 삼성전자주식회사 | 고온 상전이 패턴을 구비한 상전이 메모리소자 및 그제조방법 |
WO2008096680A1 (ja) * | 2007-02-09 | 2008-08-14 | Panasonic Corporation | 情報記録媒体およびその製造方法、スパッタリングターゲットならびに成膜装置 |
JP2009178974A (ja) * | 2008-01-31 | 2009-08-13 | Toshiba Corp | 情報記録媒体 |
US8040765B2 (en) * | 2008-09-05 | 2011-10-18 | Panasonic Corporation | Initialization method for information recording medium, initialization apparatus for information recording medium, and information recording medium |
US20110079764A1 (en) * | 2008-10-06 | 2011-04-07 | Panasonic Corporation | Information recording medium, manufacturing method therefor, and sputtering target |
JPWO2011024381A1 (ja) * | 2009-08-31 | 2013-01-24 | パナソニック株式会社 | 情報記録媒体とその製造方法 |
US8815364B2 (en) | 2011-08-30 | 2014-08-26 | Panasonic Corporation | Optical information recording medium and method for manufacturing same |
DE102018203241A1 (de) | 2018-03-05 | 2019-09-05 | Carl Zeiss Smt Gmbh | Optisches Element, sowie Verfahren zur Korrektur der Wellenfrontwirkung eines optischen Elements |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3530441A (en) * | 1969-01-15 | 1970-09-22 | Energy Conversion Devices Inc | Method and apparatus for storing and retrieving information |
US3868651A (en) * | 1970-08-13 | 1975-02-25 | Energy Conversion Devices Inc | Method and apparatus for storing and reading data in a memory having catalytic material to initiate amorphous to crystalline change in memory structure |
NL8301956A (nl) * | 1983-06-02 | 1985-01-02 | Optical Storage Int | Optisch registratie element. |
JPS6034897A (ja) * | 1983-08-08 | 1985-02-22 | Nippon Telegr & Teleph Corp <Ntt> | 書替可能光記録媒体 |
JPS6042095A (ja) * | 1983-08-19 | 1985-03-06 | Hitachi Ltd | 情報の記録用部材およびその製造方法 |
JPS6048397A (ja) * | 1983-08-29 | 1985-03-16 | Nippon Telegr & Teleph Corp <Ntt> | 光学的記録媒体およびその製造方法 |
JPS6058893A (ja) * | 1983-09-12 | 1985-04-05 | Nippon Telegr & Teleph Corp <Ntt> | 光記録媒体 |
JPS60135951A (ja) * | 1983-12-24 | 1985-07-19 | Fujitsu Ltd | パタ−ン形成法 |
JPS60155496A (ja) * | 1984-01-26 | 1985-08-15 | Sony Corp | 情報記録媒体 |
JPS60155495A (ja) * | 1984-01-26 | 1985-08-15 | Sony Corp | 光学情報記録媒体 |
JPS60157894A (ja) * | 1984-01-27 | 1985-08-19 | Nippon Columbia Co Ltd | 光情報記録媒体 |
JPS60219646A (ja) * | 1984-04-16 | 1985-11-02 | Nippon Columbia Co Ltd | 光情報記録媒体 |
JPS60234248A (ja) * | 1984-05-07 | 1985-11-20 | Nippon Columbia Co Ltd | 光情報記録媒体 |
CA1245762A (en) * | 1984-06-15 | 1988-11-29 | Noboru Yamada | Reversible optical information recording medium |
JPS6131291A (ja) * | 1984-07-24 | 1986-02-13 | Daicel Chem Ind Ltd | 光学的情報記録媒体 |
JPS6189889A (ja) * | 1984-10-11 | 1986-05-08 | Nippon Columbia Co Ltd | 光情報記録媒体 |
CN1008845B (zh) * | 1984-12-05 | 1990-07-18 | 富士通株式会社 | 光学信息记录介质及信息的记录与擦抹的方法 |
CA1236693A (en) * | 1985-02-22 | 1988-05-17 | Isao Morimoto | Information recording medium |
US4787077A (en) * | 1985-08-15 | 1988-11-22 | International Business Machines Corporation | Process for optically storing information using materials having a single phase in both the crystalline state and the amorphous state |
CN1010519B (zh) * | 1985-09-25 | 1990-11-21 | 松下电器产业株式会社 | 可逆的光学情报记录介质 |
JPS6431291A (en) * | 1987-07-27 | 1989-02-01 | Oki Electric Ind Co Ltd | Automatic goods renting apparatus |
JPS6489889A (en) * | 1987-09-30 | 1989-04-05 | Toshiba Corp | User's termination system |
JP2696858B2 (ja) * | 1987-10-28 | 1998-01-14 | 松下電器産業株式会社 | 光学情報記録再生消去部材 |
US5238572A (en) * | 1993-01-25 | 1993-08-24 | Betz Laboratories, Inc. | Enzyme treatment for industrial slime control |
-
1986
- 1986-09-22 CN CN86107003A patent/CN1010519B/zh not_active Expired
- 1986-09-23 KR KR1019860007937A patent/KR900009187B1/ko not_active IP Right Cessation
- 1986-09-25 DE DE3689815T patent/DE3689815T2/de not_active Expired - Lifetime
- 1986-09-25 EP EP86113211A patent/EP0217293B1/de not_active Expired - Lifetime
- 1986-09-25 EP EP89118260A patent/EP0355865B1/de not_active Expired - Lifetime
- 1986-09-25 DE DE3689886T patent/DE3689886T2/de not_active Expired - Fee Related
-
1993
- 1993-04-28 US US08/053,346 patent/US5278011A/en not_active Expired - Lifetime
- 1993-04-28 US US08/053,343 patent/US6268107B1/en not_active Ceased
-
2001
- 2001-01-22 US US09/765,677 patent/US20010019810A1/en not_active Abandoned
-
2003
- 2003-03-14 US US10/389,615 patent/USRE42222E1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0217293B1 (de) | 1994-04-27 |
DE3689886D1 (de) | 1994-07-07 |
KR870003475A (ko) | 1987-04-17 |
US6268107B1 (en) | 2001-07-31 |
CN1010519B (zh) | 1990-11-21 |
EP0355865A3 (en) | 1990-03-28 |
CN86107003A (zh) | 1987-08-19 |
EP0217293A1 (de) | 1987-04-08 |
EP0355865B1 (de) | 1994-06-01 |
EP0355865A2 (de) | 1990-02-28 |
DE3689886T2 (de) | 1995-01-19 |
US20010019810A1 (en) | 2001-09-06 |
KR900009187B1 (ko) | 1990-12-24 |
DE3689815T2 (de) | 1994-11-17 |
USRE42222E1 (en) | 2011-03-15 |
US5278011A (en) | 1994-01-11 |
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