Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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, Rainer Wingen, Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling +3 more | 1997-07-29 |
| 4988459 | Use of optically active oxirane-2-carboxylic acid esters as dopants in liquid-crystal mixtures, liquid-crystal mixtures containing same and novel optically active oxirane-2-carboxylic acid esters | Gunter Scherowsky, Hans-Rolf Dubal, Claus Escher, Wolfgang Hemmerling, Ingrid Muller +2 more | 1991-01-29 |