Issued Patents All Time
Showing 51–75 of 102 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5849216 | Compounds for use in liquid-crystal mixtures | Gerd Illian, Anke Kaltbeitzel, Hubert Schlosser | 1998-12-15 |
| 5849959 | Derivatives of 2, 3, 6-trifluorophenols and a process for their preparation | Ralf Pfirmann | 1998-12-15 |
| 5847149 | Thiadiazole derivatives, process for their preparation, and their use as precursors for the production of liquid crystals | Robert Fuss, Javier Manero, Hubert Schlosser | 1998-12-08 |
| 5776363 | Compounds having side chains with multiple methyl branches and their use in liquid-crystal mixtures | Barbara Hornung, Michael Morr, Detlef Lotzsch, Gerd Heppke | 1998-07-07 |
| 5707545 | Chiral oxiranylmethyl ethers, and their use as dopants in liquid-crystal mixtures | Hubert Schlosser, Anke Kaltbeitzel, Javier Manero | 1998-01-13 |
| 5702639 | Use of complex ligands for ions in ferroelectric liquid-crystal mixtures | Claus Escher, Takamasa Harada, Gerhard Illian, Norbert Rosch | 1997-12-30 |
| 5702638 | Phenanthridine derivatives, and their use in liquid-crystalline mixtures | Barbara Hornung | 1997-12-30 |
| 5679792 | Derivatives of 3-cyclohexylpropionic acid, and the use thereof in ferroelectric liquid-crystal mixtures | Claus Escher, Gerhard Illian, Hubert Schlosser | 1997-10-21 |
| 5651918 | Optically active 1,3-dioxolane derivatives carrying a mesogenic radical in the 4-position, a process for their preparation and their use as doping agents in liquid-crystal mixtures | Gunter Scherowsky, Jurgen Gay, Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling +3 more | 1997-07-29 |
| 5648021 | Phenanthrene derivatives and their use in liquid-crystalline mixtures | Barbara Hornung | 1997-07-15 |
| 5641428 | Use of optically active 1,3-dioxolane-4-carboxylates as dopes in liquid-crystal mixtures, liquid-crystal mixtures containing these compounds, and novel optically active 1,3-dioxolane-4-carboxylates | Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Ingrid Muller, Dieter Ohlendorf | 1997-06-24 |
| 5630962 | 2-Fluoropyridines, their preparation and their use in liquid crystal mixtures | Hubert Schlosser, Gerd Illian, Claus Escher | 1997-05-20 |
| 5594575 | Ferroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phase | Claus Escher, Hans-Rolf Dubal, Takamasa Harada, Wolfgang Hemmerling, Gerhard Illian +3 more | 1997-01-14 |
| 5562859 | 2-fluoropyrazines process for their preparation, and their use in liquid-crystalline mixtures | Hubert Schlosser, Gerd Illian, Anke Kaltbeitzel | 1996-10-08 |
| 5550236 | Process for cross-coupling aromatic boronic acids with aromatic halogen compounds or perfluoroalkylsulfonates | Hubert Schlosser, Javier Manero | 1996-08-27 |
| 5525258 | Trifluorophenylene compounds, process for their preparation, and their use in liquid-crystalline mixtures | Ralf Pfirmann | 1996-06-11 |
| 5512207 | Azaaromatic compounds, process for their preparation, and their use in liquid-crystalline mixtures | Javier Manero, Hubert Schlosser | 1996-04-30 |
| 5446198 | 4-hydroxy-2,3,5-trifluorobenzoic acid and a process for its preparation | Ralf Pfirmann | 1995-08-29 |
| 5443754 | Pyridylpyrimidines, a process for their preparation and their use in liquid-crystalline mixtures | Claus Escher, Gerhard Illian, Wolfgang Hemmerling | 1995-08-22 |
| 5439612 | Cyclohexylphenylpyrimidines, process for their preparation, and their use in liquid-crystalline mixtures | Gerd Illian, Ingrid Muller | 1995-08-08 |
| 5409635 | Alignment layers containing cyclic structural elements | Norbert Rosch, Peter Wegener | 1995-04-25 |
| 5407599 | Cyclopropylaklyl or -alkenyl or heterocyclic compounds, process for their preparation and their use in liquid-crystalline mixtures | Armin de Meijere, Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Ingrid Muller +4 more | 1995-04-18 |
| 5384070 | Use of optically active tetrahydrofuran-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active tetrahydrofuran-2-carboxylic acid esters | Wolfgang Hemmerling, Hans-Rolf Dubal, Claus Escher, Gerhard Illian, Yoshio Inoguchi +3 more | 1995-01-24 |
| 5378394 | Ferroelectric liquid-crystalline mixtures | Hans-Rolf Dubal, Claus Escher, Takamasa Harada, Wolfgang Hemmerling, Gerhard Illian +3 more | 1995-01-03 |
| 5371224 | Process for preparing 2,5-dibromopyrimidine | Hubert Schlosser | 1994-12-06 |