Issued Patents 1997
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702639 | Use of complex ligands for ions in ferroelectric liquid-crystal mixtures | Takamasa Harada, Gerhard Illian, Norbert Rosch, Rainer Wingen | 1997-12-30 |
| 5679792 | Derivatives of 3-cyclohexylpropionic acid, and the use thereof in ferroelectric liquid-crystal mixtures | Gerhard Illian, Hubert Schlosser, Rainer Wingen | 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, Rainer Wingen, Hans-Rolf Dubal, Wolfgang Hemmerling +3 more | 1997-07-29 |
| 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 | Rainer Wingen, Hans-Rolf Dubal, Wolfgang Hemmerling, Ingrid Muller, Dieter Ohlendorf | 1997-06-24 |
| 5630962 | 2-Fluoropyridines, their preparation and their use in liquid crystal mixtures | Hubert Schlosser, Rainer Wingen, Gerd Illian | 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 | Hans-Rolf Dubal, Takamasa Harada, Wolfgang Hemmerling, Gerhard Illian, Ingrid Muller +3 more | 1997-01-14 |