Issued Patents All Time
Showing 76–100 of 102 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5370823 | Pyrimidinecyclohexane derivatives, process for their preparation, and their use in liquid-crystalline mixtures | Gerhard Illian, Wolfgang Hemmerling | 1994-12-06 |
| 5354500 | Optically active carboxylic esters of oxygen-containing heterocycles as doping substances in liquid crystal mixtures and liquid crystal mixtures containing them | Wolfgang Hemmerling, Ingrid Muller, Hans-Rolf Dubal, Claus Escher, Gerhard Illian +2 more | 1994-10-11 |
| 5348684 | Organosilylalkyl or organosilylalkenyl compounds, process for preparing them and their use in liquid-crystalline mixtures | Wolfgang Hemmerling, Hans-Rolf Dubal, Claus Escher, Gerhard Illian, Yoshio Inoguchi +3 more | 1994-09-20 |
| 5344585 | Use of 4-fluoropyrimidine derivatives as component for ferroelectric liquid crystal mixtures | Gerhard Illian | 1994-09-06 |
| 5334328 | Chiral azetidinone derivatives, and their use as dopes in liquid-crystal mixtures | Gunter Scherowsky, Claas Junghans, Anke Kaltbeitzel, Britta Michalski | 1994-08-02 |
| 5328638 | Optically active esters of 5-ethyl- and 5-vinyl-1,3-dioxolane-4-carboxylic acid, their use as doping substances in liquid crystal mixtures and the liquid crystal mixtures containing the new esters | Ingrid Muller, Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Gerhard Illian +2 more | 1994-07-12 |
| 5310499 | Oxazolidinone derivatives, and the use thereof as dopes in liquid-crystal mixtures | Gunter Scherowsky, Michael Sefkow, Gerd Illian | 1994-05-10 |
| 5286409 | Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures | Hans-Rolf Dubal, Claus Escher, Takamasa Harada, Wolfgang Hemmerling, Gerhard Illian +3 more | 1994-02-15 |
| 5250215 | Ferroelectric liquid-crystal mixtures containing mercapto compounds | Michael Magerstadt, Norbert Rosch | 1993-10-05 |
| 5200521 | Cyclohexylphenylpyrimidines, process for their preparation, and their use in liquid-crystalline mixtures | Gerd Illian, Ingrid Muller | 1993-04-06 |
| 5167856 | Ionophore-containing ferroelectric liquid crystal mixtures | Takamasa Harada, Norbert Rosch | 1992-12-01 |
| 5071589 | Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures | Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Ingrid Muller, Dieter Ohlendorf | 1991-12-10 |
| 5025097 | 4-chlorooxazole derivatives and processes for their preparation and use | Dieter Guenther, Juergen Lingnau | 1991-06-18 |
| 4988459 | Use of optically active oxirane-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active oxirane-2-carboxylic acid esters | Gunter Scherowsky, Jurgen Gay, Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling +2 more | 1991-01-29 |
| 4985172 | Chiral aryloxypropionates, and the use thereof as dopes in liquid-crystal phases | Hans-Rolf Dubal, Wolfgang Hemmerling, Ingrid Muller, Dieter Ohlendorf | 1991-01-15 |
| 4968798 | Liquid-crystalline, 1-substituted piperidine-4-carboxylic acid esters | Dieter Gunther, Dieter Ohlendorf | 1990-11-06 |
| 4915868 | Optically active esters of 1-acylproline as dopes in liquid-crystal mixtures, and novel optically active esters of 1-acylproline | Dieter Gunther, Dieter Ohlendorf | 1990-04-10 |
| 4906401 | Use of liquid-crystal 5-phenylpyrimidine derivatives as components of smectic liquid-crystal mixtures | Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Ingrid Muller, Dieter Ohlendorf | 1990-03-06 |
| 4906752 | Liquid-crystal 5-phenylpyrimidine derivatives having sc or sc* phases and a process for preparing them | Ingrid Muller, Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Dieter Ohlendorf | 1990-03-06 |
| 4892799 | 4-chlorooxazole derivatives and processes for their preparation and use | Dieter Guenther, Juergen Lingnau | 1990-01-09 |
| 4891151 | Liquid-crystalline phenylpyrimidinyl cyclohexanecarboxylates having a smectic phase, a process for their preparation, and their use in liquid-crystal mixtures | Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Ingrid Muller, Dieter Ohlendorf | 1990-01-02 |
| 4876028 | Chiral aryl-2,3-epoxyalkyl-ethers and the corresponding thio compounds thereof, and the use thereof as dopes in liquid-crystal phases | Wolfgang Hemmerling, Hans-Rolf Dubal, Ingrid Muller, Dieter Ohlendorf | 1989-10-24 |
| 4855429 | Chiral esters formed from .alpha.-substituted carboxylic acids and mesogenic hydroxyl compounds, and their use as dopants in liquid-crystalline phases | Gerd Heppke, Christian Bahr, Ingrid Muller, Dieter Ohlendorf | 1989-08-08 |
| 4650902 | 2-ketosulfonamides and process for their preparation | Albert Bender, Dieter Gunther, Lothar Willms | 1987-03-17 |
| 4619885 | Photopolymerizable composition comprising a 1,3,10-triazaanthracen-4-one as the photoinitiator | Ulrich Geissler, Hans Ruckert | 1986-10-28 |