Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9193863 | Thermochromic material, molded article comprising said material and use thereof | Ralf Ruhmann, Arno Seeboth | 2015-11-24 |
| 7662466 | Thermochromic polymer layer and method for production thereof | Arno Seeboth, Jörg Kriwanek | 2010-02-16 |
| 5776363 | Compounds having side chains with multiple methyl branches and their use in liquid-crystal mixtures | Barbara Hornung, Rainer Wingen, Michael Morr, Gerd Heppke | 1998-07-07 |
| 5043095 | Chiral esters of mesogenic carboxylic acids in liquid crystal phases | Christian Bahr, Gerd Heppke, Feodor Oestreicher | 1991-08-27 |
| 4939287 | Chiral esters of mesogenic carboxylic acids | Christian Bahr, Gerd Heppke, 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 | Christian Bahr, Gerd Heppke, Hans-Rolf Dubal, Claus Escher, Dieter Ohlendorf | 1990-05-22 |
| 4826620 | Chiral phenolic esters of mesogenic carboxylic acids and their use as admixture in liquid crystal phases | Gerd Heppke, Feodor Oestreicher, Gunter Scherowsky | 1989-05-02 |