DE3788634D1 - Verfahren und Gerät zur optischen Aufnahme. - Google Patents
Verfahren und Gerät zur optischen Aufnahme.Info
- Publication number
- DE3788634D1 DE3788634D1 DE87118684A DE3788634A DE3788634D1 DE 3788634 D1 DE3788634 D1 DE 3788634D1 DE 87118684 A DE87118684 A DE 87118684A DE 3788634 A DE3788634 A DE 3788634A DE 3788634 D1 DE3788634 D1 DE 3788634D1
- Authority
- DE
- Germany
- Prior art keywords
- optical recording
- recording
- optical
- 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 - Fee Related
Links
- 230000003287 optical effect Effects 0.000 title 1
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
- G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
- G11B7/0055—Erasing
- G11B7/00557—Erasing involving phase-change media
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/38—Polymers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/38—Polymers
- C09K19/3833—Polymers with mesogenic groups in the side chain
- C09K19/3842—Polyvinyl derivatives
- C09K19/3852—Poly(meth)acrylate derivatives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/04—Liquid crystal materials characterised by the chemical structure of the liquid crystal components, e.g. by a specific unit
- C09K19/38—Polymers
- C09K19/3833—Polymers with mesogenic groups in the side chain
- C09K19/3842—Polyvinyl derivatives
- C09K19/3852—Poly(meth)acrylate derivatives
- C09K19/3857—Poly(meth)acrylate derivatives containing at least one asymmetric carbon atom
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133365—Cells in which the active layer comprises a liquid crystalline polymer
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/141—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
-
- 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
-
- 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
- G11B7/244—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 organic materials only
- G11B7/25—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 organic materials only containing liquid crystals
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
- G11B9/02—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor using ferroelectric record carriers; Record carriers therefor
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61300876A JPS63153520A (ja) | 1986-12-17 | 1986-12-17 | 光学変調方法および光学変調素子 |
JP31082686 | 1986-12-26 | ||
JP31082786 | 1986-12-26 | ||
JP16943587A JPS6413117A (en) | 1987-07-07 | 1987-07-07 | Optical modulating method |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3788634D1 true DE3788634D1 (de) | 1994-02-10 |
Family
ID=27474263
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3788634T Expired - Lifetime DE3788634T4 (de) | 1986-12-17 | 1987-12-16 | Verfahren und Gerät zur optischen Aufnahme. |
DE87118684A Expired - Fee Related DE3788634D1 (de) | 1986-12-17 | 1987-12-16 | Verfahren und Gerät zur optischen Aufnahme. |
DE3752080T Expired - Fee Related DE3752080T2 (de) | 1986-12-17 | 1987-12-16 | Einrichtung, Verfahren und Gerät zur optischen Modulation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3788634T Expired - Lifetime DE3788634T4 (de) | 1986-12-17 | 1987-12-16 | Verfahren und Gerät zur optischen Aufnahme. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3752080T Expired - Fee Related DE3752080T2 (de) | 1986-12-17 | 1987-12-16 | Einrichtung, Verfahren und Gerät zur optischen Modulation |
Country Status (3)
Country | Link |
---|---|
US (1) | US4995705A (de) |
EP (2) | EP0271900B1 (de) |
DE (3) | DE3788634T4 (de) |
Families Citing this family (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5272552A (en) * | 1988-05-11 | 1993-12-21 | Canon Kabushiki Kaisha | Optical modulation device and method using modulation layer of helical polymer liquid crystal having a helical chiral smectic C phase |
US5066107A (en) * | 1988-06-16 | 1991-11-19 | Canon Kabushiki Kaisha | Liquid crystal display medium, liquid crystal display method and liquid crystal display apparatus for outputting color images |
DE3823153A1 (de) * | 1988-07-08 | 1990-01-11 | Hoechst Ag | Neue ferroelektrische fluessigkristalline polymere |
DE3823154A1 (de) * | 1988-07-08 | 1990-01-11 | Hoechst Ag | Neue ferroelektrische fluessigkristalline polymere |
EP0352194A1 (de) * | 1988-07-22 | 1990-01-24 | Schlumberger Industries | Verfahren, Vorrichtung und Medium für die Aufzeichnung von Informationen |
FR2643470A2 (fr) * | 1988-07-22 | 1990-08-24 | Schlumberger Ind Sa | Perfectionnement a l'enregistrement et la lecture d'informations dans un materiau electro-optique |
JP2592694B2 (ja) * | 1989-01-26 | 1997-03-19 | 日本石油株式会社 | 液晶表示素子用補償板 |
EP0409104B1 (de) * | 1989-05-18 | 1996-05-01 | Sony Corporation | Verfahren zur Kontrolle der ferroelektrischen Domänen eines nichtlinearen optischen Substrates |
US5187298A (en) * | 1990-05-18 | 1993-02-16 | Basf Aktiengesellschaft | Monomers and their use for the production of a laser-optical recording element which can be repeatedly erased and recorded on |
US5187248A (en) * | 1989-05-26 | 1993-02-16 | Basf Aktiengesellschaft | Monomers and their use for the production of a laser-optical recording element which can be repeatedly erased and recorded on |
DE3925382A1 (de) * | 1989-06-14 | 1991-01-03 | Merck Patent Gmbh | Elektrooptisches system mit kompensationsfilm |
DE3930667A1 (de) * | 1989-09-14 | 1991-03-28 | Basf Ag | Reversible oder irreversible erzeugung einer abbildung |
US5212027A (en) * | 1990-05-18 | 1993-05-18 | Basf Aktiengesellschaft | Monomers and their use for the production of a laser-optical recording element which can be repeatedly erased and recorded on |
DE69127398T2 (de) * | 1990-05-22 | 1998-01-02 | Canon Kk | Verfahren und Gerät zur Aufzeichnung und Wiedergabe von Informationen in Zellen, die eine vielfache Interferenz gebrauchen |
JPH04228132A (ja) * | 1990-06-12 | 1992-08-18 | Canon Inc | 情報記憶媒体および該媒体を用いた記録・保持方法 |
JP2711585B2 (ja) * | 1990-06-26 | 1998-02-10 | 日本石油株式会社 | アクティブマトリックス液晶表示素子用補償板 |
JP3002757B2 (ja) * | 1990-07-04 | 2000-01-24 | キヤノン株式会社 | 画像形成方法、記録媒体、及び可視化像の再生方法 |
US5151781A (en) * | 1990-07-13 | 1992-09-29 | Victor Company Of Japan, Ltd. | Method of recording color image information |
DE4106353A1 (de) * | 1991-02-28 | 1992-09-03 | Basf Ag | Reversible oder irreversible erzeugung einer abbildung |
US5526150A (en) * | 1991-07-19 | 1996-06-11 | Nippon Oil Company, Limited | Liquid crystal polymer viewing angle compensator for liquid crystal display having its largest refractive index in the thickness direction |
US5491001A (en) * | 1991-09-03 | 1996-02-13 | Nippon Oil Company, Limited | Method for producing viewing angle compensator for liquid crystal display |
JPH05264972A (ja) * | 1992-03-18 | 1993-10-15 | Canon Inc | 表示素子および表示装置 |
DE69326745T2 (de) * | 1992-06-01 | 2000-04-27 | Advanced Tech Incubator | Lichtsteuerelement für hochauflösende optische systeme und verfahren zu seiner herstellung |
JP2952449B2 (ja) * | 1992-06-03 | 1999-09-27 | 日石三菱株式会社 | 液晶表示素子用補償板の製造法 |
US5426009A (en) * | 1992-09-19 | 1995-06-20 | Merck Patent Gesellschaft Mit Beschrankter Haftung | Polymeric composite material |
EP0599289B1 (de) * | 1992-11-25 | 1998-03-18 | Canon Kabushiki Kaisha | Flüssigkristallverbindung, Zusammensetzung und Vorrichtung |
US5518782A (en) * | 1992-12-14 | 1996-05-21 | Canon Kabushiki Kaisha | Liquid crystal device |
US6051289A (en) * | 1993-02-12 | 2000-04-18 | Nippon Petrochemicals, Co., Ltd | Liquid crystalline polymer film, laminate sheet for optical element using same, and optical element using the laminate |
US5854614A (en) * | 1996-11-18 | 1998-12-29 | Array Printers Ab Publ. | Display device and method for visualizing computer generated image information |
US6229514B1 (en) | 1995-11-13 | 2001-05-08 | Array Printers Publ. Ab | Display device and method for visualizing computer generated image information |
US6686104B1 (en) | 1993-11-24 | 2004-02-03 | Canon Kabushiki Kaisha | Color filter, method for manufacturing it, and liquid crystal panel |
TW417034B (en) * | 1993-11-24 | 2001-01-01 | Canon Kk | Color filter, method for manufacturing it, and liquid crystal panel |
JP3332515B2 (ja) * | 1993-11-24 | 2002-10-07 | キヤノン株式会社 | カラーフィルタ、その製造方法及び液晶パネル |
JP2952143B2 (ja) * | 1993-12-21 | 1999-09-20 | キヤノン株式会社 | カラーフィルタの製造方法 |
DE69523351T2 (de) * | 1994-01-28 | 2002-05-02 | Canon Kk | Farbfilter, Verfahren zu seiner Herstellung, und Flüssigkristalltafel |
JP3376169B2 (ja) * | 1994-06-17 | 2003-02-10 | キヤノン株式会社 | カラーフィルタの製造方法及びその方法により製造されたカラーフィルタ |
JP3014923B2 (ja) * | 1994-06-24 | 2000-02-28 | キヤノン株式会社 | カラーフィルターおよびその製造方法ならびにそのフィルターを用いた液晶表示装置 |
JPH08146214A (ja) * | 1994-09-19 | 1996-06-07 | Canon Inc | カラーフィルタの製造方法、カラーフィルタ、液晶パネル、および同液晶パネルを備えた情報処理装置 |
JP3372724B2 (ja) * | 1994-09-21 | 2003-02-04 | キヤノン株式会社 | カラーフィルタおよびその製造方法、液晶パネルならびに情報処理装置 |
JPH08227011A (ja) * | 1994-09-30 | 1996-09-03 | Canon Inc | カラーフィルタ、その製造方法、液晶パネル、及びこれを備えた情報処理装置 |
TW270989B (en) * | 1994-11-22 | 1996-02-21 | Akzo Nobel Nv | Digital storage medium based on fabry-perot principle |
US5751391A (en) * | 1995-04-27 | 1998-05-12 | Canon Kabushiki Kaisha | Liquid crystal device with elongated projection height smaller than liquid crystal thickness and process for producing same |
US6061111A (en) * | 1995-11-30 | 2000-05-09 | Sony Corporation | Reflective LCD having orientation film formed on quarter wavelayer and planarizing film formed on reflector layer |
FR2743428B1 (fr) * | 1996-01-08 | 1998-01-30 | Dupont Laurent | Modulateur de phase electro-optique pour fibre optique monomode |
KR100447017B1 (ko) * | 1996-01-23 | 2004-10-15 | 아사히 가라스 가부시키가이샤 | 광헤드장치및그제조방법그리고그에적합한회절소자 |
US6278430B1 (en) | 1998-03-06 | 2001-08-21 | Array Printers Ab | Thermosensitive display device |
US5973762A (en) * | 1998-06-04 | 1999-10-26 | Kent State University | Ferroelectric liquid crystal cell with a monochevron structure of smectic layers |
JP4107767B2 (ja) * | 1999-06-23 | 2008-06-25 | ソニー株式会社 | 光記録媒体及びこれを用いた記録再生方法、記録再生装置 |
KR20010065169A (ko) * | 1999-12-29 | 2001-07-11 | 구본준, 론 위라하디락사 | 액정 표시장치 |
US6858862B2 (en) | 2001-06-29 | 2005-02-22 | Intel Corporation | Discrete polymer memory array and method of making same |
US6756620B2 (en) * | 2001-06-29 | 2004-06-29 | Intel Corporation | Low-voltage and interface damage-free polymer memory device |
US6624457B2 (en) | 2001-07-20 | 2003-09-23 | Intel Corporation | Stepped structure for a multi-rank, stacked polymer memory device and method of making same |
US6960479B2 (en) * | 2001-07-20 | 2005-11-01 | Intel Corporation | Stacked ferroelectric memory device and method of making same |
US6922350B2 (en) * | 2002-09-27 | 2005-07-26 | Intel Corporation | Reducing the effect of write disturbs in polymer memories |
US8081291B2 (en) * | 2006-01-12 | 2011-12-20 | Teledyne Licensing, Llc | Electro-optic zoom lens system |
US7929239B2 (en) * | 2006-12-18 | 2011-04-19 | Seagate Technology Llc | Data storage apparatus including optically active nano-patterned media and electric field assisted recording method |
US20090263581A1 (en) * | 2008-04-16 | 2009-10-22 | Northeast Maritime Institute, Inc. | Method and apparatus to coat objects with parylene and boron nitride |
US20090263641A1 (en) * | 2008-04-16 | 2009-10-22 | Northeast Maritime Institute, Inc. | Method and apparatus to coat objects with parylene |
JP2011154269A (ja) * | 2010-01-28 | 2011-08-11 | Lg Display Co Ltd | 液晶表示素子およびその製造方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3851318A (en) * | 1971-11-17 | 1974-11-26 | Int Liquid Xtal Co | Liquid crystal information storage and read-out system |
FR2275087A1 (fr) * | 1974-06-14 | 1976-01-09 | Thomson Csf | Dispositif de reproduction d'images en noir et blanc utilisant un materiau presentant une phase smectique et systeme de teletransmission et telereprographie mettant en oeuvre ce dispositif |
DE2831909A1 (de) * | 1978-07-20 | 1980-02-07 | Basf Ag | Fluessig-kristalline polymerphase mit cholesterischer struktur, verfahren zu ihrer herstellung und ihre verwendung |
JPS5545166A (en) * | 1978-09-25 | 1980-03-29 | Matsushita Electric Ind Co Ltd | Recording and reproducing method for optical information |
US4405993A (en) * | 1981-01-02 | 1983-09-20 | Hewlett-Packard Company | Liquid crystal disc memory system |
JPS5887535A (ja) * | 1981-11-20 | 1983-05-25 | Sony Corp | 液晶表示装置 |
FR2523343A1 (fr) * | 1982-03-09 | 1983-09-16 | Thomson Csf | Ecran d'un dispositif de visualisation utilisant un effet mixte thermique et electrique |
JPS6028045A (ja) * | 1983-07-25 | 1985-02-13 | Sony Corp | 情報記録媒体 |
US4852075A (en) * | 1983-08-22 | 1989-07-25 | Optical Data, Inc. | Erasable optical data storage medium and method and apparatus for recording data on the medium |
GB8324642D0 (en) * | 1983-09-14 | 1983-10-19 | Univ Manchester | Liquid crystal storage device |
JPS60156043A (ja) * | 1984-01-23 | 1985-08-16 | Canon Inc | カイラルスメクティック液晶素子 |
JPS6180537A (ja) * | 1984-09-28 | 1986-04-24 | Toshiba Corp | 光記憶方式 |
JPS6192453A (ja) * | 1984-10-11 | 1986-05-10 | Mitsubishi Petrochem Co Ltd | 光記録方法 |
US4675699A (en) * | 1985-01-18 | 1987-06-23 | Canon Kabushiki Kaisha | Image-recording apparatus |
GB2177228B (en) * | 1985-06-14 | 1989-12-28 | Semiconductor Energy Lab | Non-volatile liquid crystal optical storage device |
-
1987
- 1987-12-16 EP EP87118684A patent/EP0271900B1/de not_active Expired - Lifetime
- 1987-12-16 DE DE3788634T patent/DE3788634T4/de not_active Expired - Lifetime
- 1987-12-16 US US07/133,797 patent/US4995705A/en not_active Expired - Lifetime
- 1987-12-16 DE DE87118684A patent/DE3788634D1/de not_active Expired - Fee Related
- 1987-12-16 EP EP92119132A patent/EP0528449B1/de not_active Expired - Lifetime
- 1987-12-16 DE DE3752080T patent/DE3752080T2/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0271900A3 (en) | 1988-12-07 |
DE3788634T4 (de) | 1994-09-08 |
DE3752080D1 (de) | 1997-07-17 |
EP0528449A3 (en) | 1993-03-31 |
EP0271900A2 (de) | 1988-06-22 |
DE3788634T2 (de) | 1994-05-19 |
EP0528449B1 (de) | 1997-06-11 |
EP0528449A2 (de) | 1993-02-24 |
DE3752080T2 (de) | 1998-01-22 |
US4995705A (en) | 1991-02-26 |
EP0271900B1 (de) | 1993-12-29 |
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