Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876028 | Chiral aryl-2,3-epoxyalkyl-ethers and the corresponding thio compounds thereof, and the use thereof as dopes in liquid-crystal phases | Wolfgang Hemmerling, Hans-Rolf Dubal, Ingrid Muller, Rainer Wingen | 1989-10-24 |
| 4859418 | Process and compositions for corrosion inhibition of metallic materials | Werner Interthal, Friedrich Stoll | 1989-08-22 |
| 4855429 | Chiral esters formed from .alpha.-substituted carboxylic acids and mesogenic hydroxyl compounds, and their use as dopants in liquid-crystalline phases | Gerd Heppke, Christian Bahr, Ingrid Muller, Rainer Wingen | 1989-08-08 |
| 4828765 | Oxyalkylated quaternary ammonium compounds and their use as drag reducing agents | Manfred Hofinger | 1989-05-09 |