DE3373193D1 - Liquid crystalline compounds and mixtures thereof - Google Patents
Liquid crystalline compounds and mixtures thereofInfo
- Publication number
- DE3373193D1 DE3373193D1 DE8383307884T DE3373193T DE3373193D1 DE 3373193 D1 DE3373193 D1 DE 3373193D1 DE 8383307884 T DE8383307884 T DE 8383307884T DE 3373193 T DE3373193 T DE 3373193T DE 3373193 D1 DE3373193 D1 DE 3373193D1
- Authority
- DE
- Germany
- Prior art keywords
- mixtures
- liquid crystalline
- crystalline compounds
- compounds
- liquid
- 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
Links
Classifications
-
- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/10—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings
- C09K19/20—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers
- C09K19/2007—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a chain containing carbon and oxygen atoms as chain links, e.g. esters or ethers the chain containing -COO- or -OCO- groups
- C09K19/2021—Compounds containing at least one asymmetric carbon atom
-
- 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
- C09K19/06—Non-steroidal liquid crystal compounds
- C09K19/08—Non-steroidal liquid crystal compounds containing at least two non-condensed rings
- C09K19/30—Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing saturated or unsaturated non-aromatic rings, e.g. cyclohexane rings
- C09K19/3001—Cyclohexane rings
- C09K19/3066—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers
- C09K19/3068—Cyclohexane rings in which the rings are linked by a chain containing carbon and oxygen atoms, e.g. esters or ethers chain containing -COO- or -OCO- groups
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP64083A JPS59128357A (ja) | 1983-01-06 | 1983-01-06 | 液晶物質及び液晶組成物 |
JP58078594A JPH0623135B2 (ja) | 1983-05-04 | 1983-05-04 | 液晶物質及び液晶組成物 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3373193D1 true DE3373193D1 (en) | 1987-10-01 |
Family
ID=26333658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383307884T Expired DE3373193D1 (en) | 1983-01-06 | 1983-12-22 | Liquid crystalline compounds and mixtures thereof |
Country Status (3)
Country | Link |
---|---|
US (2) | US4596667A (de) |
EP (1) | EP0115693B1 (de) |
DE (1) | DE3373193D1 (de) |
Families Citing this family (90)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4613209A (en) * | 1982-03-23 | 1986-09-23 | At&T Bell Laboratories | Smectic liquid crystals |
DE3373193D1 (en) * | 1983-01-06 | 1987-10-01 | Chisso Corp | Liquid crystalline compounds and mixtures thereof |
US4614609A (en) | 1983-06-14 | 1986-09-30 | Chisso Corporation | Liquid crystalline biphenyl derivatives and mixtures thereof |
JPS6028487A (ja) * | 1983-07-27 | 1985-02-13 | Alps Electric Co Ltd | 液晶組成物 |
JPS6054341A (ja) * | 1983-09-05 | 1985-03-28 | Chisso Corp | 液晶性炭酸エステル類 |
DE3332692A1 (de) * | 1983-09-10 | 1985-03-28 | Merck Patent Gmbh, 6100 Darmstadt | Anisotrope verbindungen und fluessigkristallmischungen |
US5252252A (en) * | 1983-09-10 | 1993-10-12 | Merck Patent Gesellschaft Mit Beschraenkter Haftung | Anisotropic compounds and liquid crystal mixtures |
DE3333677A1 (de) * | 1983-09-17 | 1985-04-04 | Merck Patent Gmbh, 6100 Darmstadt | Fluessigkristall-phase |
JPS6090290A (ja) * | 1983-10-05 | 1985-05-21 | Chisso Corp | カイラルスメクチツク液晶組成物 |
JPH0794406B2 (ja) * | 1984-02-08 | 1995-10-11 | チッソ株式会社 | 液晶性置換ビフエニルエステル類 |
JPS60203692A (ja) * | 1984-03-28 | 1985-10-15 | Seiko Instr & Electronics Ltd | 液晶組成物 |
JPS6143A (ja) * | 1984-06-11 | 1986-01-06 | Chisso Corp | 強誘電性液晶化合物及び液晶組成物 |
JPS6117541A (ja) * | 1984-07-03 | 1986-01-25 | Seiko Instr & Electronics Ltd | 液晶化合物 |
DE3580406D1 (de) * | 1984-07-11 | 1990-12-13 | Merck Patent Gmbh | Fluessigkristall-phase. |
US5120466A (en) * | 1984-07-13 | 1992-06-09 | Canon Kabushiki Kaisha | Fluid crystal device |
US5726460A (en) * | 1984-07-13 | 1998-03-10 | Canon Kabushiki Kaisha | Liquid crystal device |
US5301049A (en) * | 1984-07-13 | 1994-04-05 | Canon Kabushiki Kaisha | Liquid crystal device with at least two liquid crystal compounds, one having one not having a cholesteric phase |
US5311343A (en) * | 1984-07-13 | 1994-05-10 | Canon Kabushiki Kaisha | Liquid crystal device with at least two liquid crystal compounds, one having and one not having a chiral smectic phase |
JPH0662476B2 (ja) * | 1984-09-04 | 1994-08-17 | チッソ株式会社 | メチレンオキシ基を有する液晶性化合物及びその組成物 |
DE3577843D1 (de) * | 1984-09-10 | 1990-06-28 | Ajinomoto Kk | Biphenyldiesterverbindungen und fluessigkristallkompositionen die diese enthalten. |
DE3587601T2 (de) * | 1984-10-18 | 1994-03-10 | Chisso Corp | Ferroelektrische chirale smektische Flüssigkristallzusammensetzung. |
GB8524879D0 (en) * | 1985-10-09 | 1985-11-13 | Secr Defence | N-substituted amino acid derivatives |
GB2170214A (en) * | 1985-01-26 | 1986-07-30 | Stc Plc | Ferroelectric smectic liquid crystal mixture |
JPS61147232A (ja) * | 1984-12-20 | 1986-07-04 | Canon Inc | 液晶素子 |
JPH0610170B2 (ja) * | 1984-12-26 | 1994-02-09 | チッソ株式会社 | 新規光学活性化合物及び液晶組成物 |
JPS61156229A (ja) * | 1984-12-28 | 1986-07-15 | Canon Inc | 液晶装置 |
EP0188222B1 (de) * | 1985-01-09 | 1992-04-29 | Dainippon Ink And Chemicals, Inc. | Substituierte Flüssigkristallverbindungen |
GB8501509D0 (en) * | 1985-01-22 | 1985-02-20 | Secr Defence | Esters |
EP0191600B1 (de) * | 1985-02-08 | 1991-12-27 | Ajinomoto Co., Inc. | Auf Polyphenyl basierende Esterverbindungen und sie enthaltende flüssigkristalline Zusammensetzungen |
US5076962A (en) * | 1985-03-12 | 1991-12-31 | Chisso Corporation | Ferroelectric chiral smectic liquid crystal composition |
JPS61210056A (ja) * | 1985-03-14 | 1986-09-18 | Chisso Corp | 含ハロゲン光学活性液晶化合物及び液晶組成物 |
US4764619A (en) * | 1985-03-26 | 1988-08-16 | Asahi Glass Company Ltd. | Optically active compounds, smectic liquid crystal compositions containing them and smectic liquid crystal display devices |
DE3667052D1 (en) * | 1985-07-01 | 1989-12-28 | Ajinomoto Kk | Biphenyl carbonic acid ester compounds and liquid crystal composition containing the same |
JPH0688952B2 (ja) * | 1985-07-26 | 1994-11-09 | チッソ株式会社 | メチレンオキシ基とエステル基を有する新規光学活性液晶化合物及びその組成物 |
US4780240A (en) * | 1985-08-02 | 1988-10-25 | Chisso Corporation | Liquid crystal composition |
GB2181429B (en) * | 1985-08-13 | 1989-11-15 | Canon Kk | Lactic acid derivative and liquid crystal composition containing same |
GB8520715D0 (en) * | 1985-08-19 | 1985-09-25 | Secr Defence | Secondary alcohol derivatives |
DE3627964C2 (de) * | 1985-08-26 | 2000-11-02 | Samsung Electronic Devices | Ferroelektrische kristallin-flüssige Derivate verzweigter acyclischer chiraler alpha-Chlorcarbonsäuren, Verfahren zu ihrer Herstellung und ihre Verwendung in Gemischen für schnell schaltende Displays in der Optoelektronik |
JPH0615508B2 (ja) * | 1985-08-27 | 1994-03-02 | チッソ株式会社 | 液晶性カルボナ−ト安息香酸誘導体及び組成物 |
DE3629446A1 (de) * | 1985-09-04 | 1987-03-12 | Canon Kk | Optisch aktive thiole und deren mesomorphe esterderivate |
JPS6289645A (ja) * | 1985-09-18 | 1987-04-24 | Chisso Corp | 強誘電性液晶エステル化合物及び液晶組成物 |
US4638073A (en) * | 1985-10-01 | 1987-01-20 | Walba David M | Synthesis of new liquid crystal materials possessing phenylbenzoate or biphenyl core units and (2,3)-epoxyalkyloxiranemethanol chiral tails |
US4812259A (en) * | 1985-11-01 | 1989-03-14 | Canon Kabushiki Kaisha | Lactic acid derivative, liquid crystal composition containing same and liquid crystal device |
JPS62106985A (ja) * | 1985-11-01 | 1987-05-18 | Chisso Corp | 複屈折型表示素子用強誘電性カイラルスメクチツク液晶組成物 |
US4844835A (en) * | 1985-12-26 | 1989-07-04 | Idenitsu Kosan Co., Ltd. | Ferroelectric liquid crystal polymer |
ATE110368T1 (de) * | 1986-02-17 | 1994-09-15 | Merck Patent Gmbh | Optisch aktive verbindungen. |
DE3782913T2 (de) * | 1986-02-21 | 1993-06-09 | Secr Defence Brit | Fluessigkristallverbindungen, gemische und anordnungen. |
FR2595098B1 (fr) * | 1986-02-28 | 1988-09-16 | Thomson Csf | Cristal liquide ferroelectrique, son procede de fabrication et son utilisation dans un melange de cristaux liquides |
US4867903A (en) * | 1986-03-10 | 1989-09-19 | Canon Kabushiki Kaisha | Fluoroalkane derivative |
DE3772236D1 (de) * | 1986-03-11 | 1991-09-26 | Mitsubishi Rayon Co | Alpha-methylzimtsaeureester abkoemmling und fluessigkristallzusammensetzung. |
US4816178A (en) * | 1986-04-30 | 1989-03-28 | Canon Kabushiki Kaisha | Optically active compound and liquid crystal composition containing same |
US4886619A (en) * | 1986-06-30 | 1989-12-12 | Minnesota Mining And Manufacturing Company | Fluorine-containing chiral smectic liquid crystals |
US5132041A (en) * | 1986-07-21 | 1992-07-21 | Polaroid Corporation | Liquid crystal compounds having ether tail moiety |
JPS63137983A (ja) * | 1986-11-28 | 1988-06-09 | Chisso Corp | ゲストホスト型表示素子用強誘電性液晶混合物 |
US4866199A (en) * | 1987-03-20 | 1989-09-12 | Adeka Argus Chemical Co., Ltd. | Optically active ester compound |
US5397504A (en) * | 1987-05-29 | 1995-03-14 | Kanto Kagaku Kabushiki Kaisha | Biphenyl compound |
JP2627629B2 (ja) * | 1987-12-07 | 1997-07-09 | チッソ株式会社 | 液晶組成物 |
JPH07121893B2 (ja) * | 1987-07-27 | 1995-12-25 | 昭和シェル石油株式会社 | 液晶化合物 |
JPS6460690A (en) * | 1987-08-28 | 1989-03-07 | Alps Electric Co Ltd | Liquid crystal composition |
US4959173A (en) * | 1987-09-29 | 1990-09-25 | Adeka Argus Chemical Co., Ltd. | Optically active ester compound |
US5238603A (en) * | 1987-10-15 | 1993-08-24 | Chisso Corporation | Optically active liquid crystalline compound and a composition containing same |
US5059345A (en) * | 1987-11-06 | 1991-10-22 | Nippon Telegraph And Telephone Corporation | Optically active compound and chiral liquid crystal composition containing the same |
US4917821A (en) * | 1987-11-09 | 1990-04-17 | Canon Kabushiki Kaisha | Optically active mesomorphic compound and liquid crystal composition containing same |
US5172107A (en) * | 1987-11-26 | 1992-12-15 | Canon Kabushiki Kaisha | Display system including an electrode matrix panel for scanning only scanning lines on which a moving display is written |
CA1319767C (en) * | 1987-11-26 | 1993-06-29 | Canon Kabushiki Kaisha | Display apparatus |
JPH01179915A (ja) * | 1988-01-11 | 1989-07-18 | Canon Inc | 液晶素子 |
JPH01256590A (ja) * | 1988-04-06 | 1989-10-13 | Chisso Corp | 強誘電性液晶組成物および液晶素子 |
KR900018725A (ko) * | 1988-05-12 | 1990-12-22 | 야마자끼 순페이 | 액정 전자 광학 장치 |
CA1341098C (en) * | 1988-08-25 | 2000-09-12 | Kazuhiko Sakaguchi | Liquid crystal composition and use thereof |
JP2523811B2 (ja) * | 1988-09-02 | 1996-08-14 | 株式会社日立製作所 | 液晶光変調装置 |
AU617006B2 (en) | 1988-09-29 | 1991-11-14 | Canon Kabushiki Kaisha | Data processing system and apparatus |
JPH0717628B2 (ja) * | 1989-07-27 | 1995-03-01 | ダイソー株式会社 | 液晶性化合物およびその用途 |
JP3021477B2 (ja) * | 1989-08-28 | 2000-03-15 | 昭和シェル石油株式会社 | 三安定状態で駆動する光学素子用液晶 |
JP2769879B2 (ja) * | 1989-09-29 | 1998-06-25 | キヤノン株式会社 | カイラルスメクチック液晶素子 |
JP2505291B2 (ja) * | 1989-10-06 | 1996-06-05 | シャープ株式会社 | 強誘電性液晶素子 |
US5646704A (en) * | 1989-10-26 | 1997-07-08 | Canon Kabushiki Kaisha | Chiral smectic liquid crystal device having predetermined pre-tilt angle and intersection angle |
US5182662A (en) * | 1989-12-01 | 1993-01-26 | Canon Kabushiki Kaisha | Liquid crystal device |
US5172105A (en) * | 1989-12-20 | 1992-12-15 | Canon Kabushiki Kaisha | Display apparatus |
EP0450595B1 (de) * | 1990-04-04 | 1995-03-01 | Mitsubishi Gas Chemical Company, Inc. | Flüssigkristalline Verbindung und Flüssigkristallanzeigevorrichtung |
JP2915104B2 (ja) * | 1990-07-30 | 1999-07-05 | キヤノン株式会社 | 液晶素子および液晶駆動方法 |
JP2784700B2 (ja) * | 1990-08-13 | 1998-08-06 | キヤノン株式会社 | 強誘電性液晶素子 |
JP2808483B2 (ja) * | 1990-08-30 | 1998-10-08 | キヤノン株式会社 | 液晶素子 |
JP2782291B2 (ja) * | 1990-08-30 | 1998-07-30 | キヤノン株式会社 | 強誘電性液晶カラーパネル |
JPH04119325A (ja) * | 1990-09-11 | 1992-04-20 | Canon Inc | 強誘電性液晶素子の製造方法 |
US5282068A (en) * | 1990-11-08 | 1994-01-25 | Canon Kabushiki Kaisha | Liquid crystal display with opaque insulating layer and metal layer at and wider than inter-electrode gap and method of manufacturing |
JP2826772B2 (ja) * | 1991-01-07 | 1998-11-18 | キヤノン株式会社 | 液晶表示装置 |
US5353141A (en) * | 1991-10-08 | 1994-10-04 | Canon Kabushiki Kaisha | Method for aligning treatment of liquid crystal device including varying with time the feeding speed of the rubbing roller |
JP3100014B2 (ja) * | 1991-12-10 | 2000-10-16 | キヤノン株式会社 | 強誘電性液晶素子及び該素子の製造方法 |
US5594571A (en) * | 1991-12-10 | 1997-01-14 | Canon Kabushiki Kaisha | Ferroelectric liquid crystal device and process for production thereof |
EP0637622B1 (de) * | 1993-08-03 | 1998-06-10 | Canon Kabushiki Kaisha | Flüssigkristallvorrichtung |
Family Cites Families (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4937707B1 (de) * | 1970-12-28 | 1974-10-11 | ||
DD105701A1 (de) * | 1973-07-02 | 1974-05-05 | ||
US3975286A (en) * | 1974-09-03 | 1976-08-17 | Beckman Instruments, Inc. | Low voltage actuated field effect liquid crystals compositions and method of synthesis |
US4147651A (en) * | 1974-09-03 | 1979-04-03 | Beckman Instruments, Inc. | Biphenyl based liquid crystal compositions |
DD123757A5 (de) * | 1974-10-22 | 1977-01-12 | ||
JPS5321148A (en) * | 1976-08-11 | 1978-02-27 | Chisso Corp | Stable cholesteric compound |
GB1592161A (en) * | 1976-08-13 | 1981-07-01 | Secr Defence | Biphenyl carboxylic esters and their use as liquid crystal materials |
US4113647A (en) * | 1976-08-13 | 1978-09-12 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Liquid crystalline materials |
GB1596012A (en) * | 1976-08-16 | 1981-08-19 | Secr Defence | Optically active liquid crystal materials and liquid crystal devices containing them |
US4208106A (en) * | 1976-09-27 | 1980-06-17 | Beckman Instruments, Inc. | Fluorescent displays |
JPS6042225B2 (ja) * | 1976-09-29 | 1985-09-20 | チッソ株式会社 | 液晶化合物 |
JPS5388677A (en) * | 1976-12-21 | 1978-08-04 | Seiko Epson Corp | Display element |
JPS5387986A (en) * | 1977-01-12 | 1978-08-02 | Seiko Epson Corp | Display element |
GB1603076A (en) * | 1977-04-05 | 1981-11-18 | Secr Defence | Esters of (+)-4-(2'-methylbutyl)phenol and their use as liquid crystal materials |
JPS5421978A (en) * | 1977-07-19 | 1979-02-19 | Canon Inc | Liquid crystal composition |
DE2800553A1 (de) * | 1978-01-07 | 1979-07-12 | Merck Patent Gmbh | Cyclohexanderivate |
DE2933563A1 (de) * | 1979-07-18 | 1981-02-05 | Bbc Brown Boveri & Cie | Anisotrope verbindungen mit negativer dk-anisotropie |
JPS56122334A (en) * | 1980-02-29 | 1981-09-25 | Chisso Corp | Liquid crystal 4-alkylcyclohexyl ester |
JPS5763380A (en) * | 1980-10-03 | 1982-04-16 | Casio Comput Co Ltd | Guest-host-type liquid crystal display device |
GB2085910B (en) * | 1980-10-13 | 1985-05-22 | Secr Defence | A liquid crystal composition comprising a mixture of diester(s) and cyclohexane derivative(s) |
US4427569A (en) * | 1980-12-18 | 1984-01-24 | Hughes Aircraft Company | Short length ester liquid crystal mixtures and process for making same |
DE3163424D1 (en) * | 1981-01-19 | 1984-06-07 | Merck Patent Gmbh | Liquid crystal mixture |
DE3268468D1 (en) * | 1981-02-13 | 1986-02-27 | Secr Defence Brit | Liquid crystal compounds exhibiting a small dielectric anisotropy and liquid crystal materials and devices incorporating such compounds |
DE3268611D1 (en) * | 1981-02-25 | 1986-03-06 | Hitachi Ltd | Colorless liquid crystalline compounds |
JPS57165334A (en) * | 1981-04-02 | 1982-10-12 | Chisso Corp | Halogenobenzene derivative having optical active 2- methylbutyloxyphenyl group |
JPS5813546A (ja) * | 1981-07-20 | 1983-01-26 | Chisso Corp | 光学活性2−メチルブチルオキシフエニル基を有するカルボン酸エステル誘導体 |
JPS58140045A (ja) * | 1982-02-15 | 1983-08-19 | Kanto Kagaku Kk | 液晶化合物,液晶組成物並びに液晶表示素子 |
DE3206269A1 (de) * | 1982-02-20 | 1983-09-01 | Merck Patent Gmbh, 6100 Darmstadt | Bicyclohexylderivate |
US4613209A (en) * | 1982-03-23 | 1986-09-23 | At&T Bell Laboratories | Smectic liquid crystals |
EP0099488A3 (de) * | 1982-07-13 | 1984-12-27 | Asulab S.A. | Flüssigkristallzusammensetzung insbesondere für elektrooptische Anlage |
EP0110299B2 (de) * | 1982-11-26 | 1993-06-09 | Hitachi, Ltd. | Smektische Flüssigkristallverbindungen und Flüssigkristallzusammensetzungen |
DE3373193D1 (en) * | 1983-01-06 | 1987-10-01 | Chisso Corp | Liquid crystalline compounds and mixtures thereof |
US4614609A (en) * | 1983-06-14 | 1986-09-30 | Chisso Corporation | Liquid crystalline biphenyl derivatives and mixtures thereof |
JPS6054341A (ja) * | 1983-09-05 | 1985-03-28 | Chisso Corp | 液晶性炭酸エステル類 |
JPS6090290A (ja) * | 1983-10-05 | 1985-05-21 | Chisso Corp | カイラルスメクチツク液晶組成物 |
US4647398A (en) * | 1984-02-03 | 1987-03-03 | Chisso Corporation | Liquid-crystalline carbonic acid esters and liquid crystal compositions containing same |
EP0191600B1 (de) * | 1985-02-08 | 1991-12-27 | Ajinomoto Co., Inc. | Auf Polyphenyl basierende Esterverbindungen und sie enthaltende flüssigkristalline Zusammensetzungen |
DE3667052D1 (en) * | 1985-07-01 | 1989-12-28 | Ajinomoto Kk | Biphenyl carbonic acid ester compounds and liquid crystal composition containing the same |
JPS62114937A (ja) * | 1985-11-14 | 1987-05-26 | Chisso Corp | 液晶性炭酸エステル及び液晶組成物 |
-
1983
- 1983-12-22 DE DE8383307884T patent/DE3373193D1/de not_active Expired
- 1983-12-22 EP EP83307884A patent/EP0115693B1/de not_active Expired
-
1984
- 1984-01-04 US US06/568,060 patent/US4596667A/en not_active Expired - Lifetime
-
1987
- 1987-12-31 US US07/140,205 patent/US4820444A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0115693B1 (de) | 1987-08-26 |
EP0115693A3 (en) | 1985-06-19 |
EP0115693A2 (de) | 1984-08-15 |
US4596667A (en) | 1986-06-24 |
US4820444A (en) | 1989-04-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |