Issued Patents 1994
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5373380 | Ferroelectric liquid crystal display with liquid crystal mixtures having high spontaneous polarization and short helical pitch and alignment layers containing lipophilic or amphiphilic compounds | Claus Escher, Gerd Illian, Anke Kaltbeitzel, Norbert Rosch | 1994-12-13 |
| 5366657 | Geminal dimethylalkyl compounds, process for their preparation and their use in liquid-crystalline mixtures | Gerhard Illian, Ingrid Muller | 1994-11-22 |
| 5360576 | Chiral alkenylaryl 2,3-epoxyalkyl ethers, and the use thereof in liquid-crystalline mixtures | Karsten Blatter, Claus Escher, Peter Harnischfeger, Wolfgang Hemmerling | 1994-11-01 |
| 5361152 | Process for producing ferroelectric liquid-crystal cells | Claus Escher, Gerhard Illian, Dieter Ohlendorf, Heinz Rieger, Norbert Rosch | 1994-11-01 |
| 5353136 | Ferroelectric liquid crystal with positive dielectric anisotropy, chevron structure and grey scale | Claus Escher, Hans-Rolf Dubal, Gerhard Illian, Mikio Murakami, Dieter Ohlendorf | 1994-10-04 |
| 5333075 | Ferroelectric liquid crystal mixtures containing lipohilizing, lipophilic or amphiphilic compounds for eliminating ionic impurities | Claus Escher, Gerd Illian, Anke Kaltbeitzel, Norbert Rosch | 1994-07-26 |
| 5286409 | Liquid-crystalline mixtures, in particular ferroelectric liquid-crystalline mixtures | Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Gerhard Illian, Ingrid Muller +3 more | 1994-02-15 |