Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |