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, Christian Bahr, Lutz Lehmann | 1989-10-17 |
| 4826620 | Chiral phenolic esters of mesogenic carboxylic acids and their use as admixture in liquid crystal phases | Gerd Heppke, Detlef Lotzsch, Feodor Oestreicher | 1989-05-02 |