Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5043095 | Chiral esters of mesogenic carboxylic acids in liquid crystal phases | Gerd Heppke, Detlef Lotzsch, Feodor Oestreicher | 1991-08-27 |
| 4939287 | Chiral esters of mesogenic carboxylic acids | Gerd Heppke, Detlef Lotzsch, Feodor Oestreicher | 1990-07-03 |
| 4927244 | Use of compounds or mixtures of compounds which have a chiral, orthogonal, more highly ordered smectic phase in the range of said phase as switching or indicating medium | Gerd Heppke, Detlef Lotzsch, Hans-Rolf Dubal, Claus Escher, Dieter Ohlendorf | 1990-05-22 |
| 4874545 | Chiral esters of .alpha.-substituted phenylalkanoic acids and mesogenic hydroxy compounds, and their use as a doping substance in liquid crystal phases | Gerd Heppke, Gunter Scherowsky, Lutz Lehmann | 1989-10-17 |
| 4855429 | Chiral esters formed from .alpha.-substituted carboxylic acids and mesogenic hydroxyl compounds, and their use as dopants in liquid-crystalline phases | Gerd Heppke, Ingrid Muller, Dieter Ohlendorf, Rainer Wingen | 1989-08-08 |