Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5236618 | Liquid crystal phase | Gerd Heppke | 1993-08-17 |
| 5043095 | Chiral esters of mesogenic carboxylic acids in liquid crystal phases | Christian Bahr, Gerd Heppke, Detlef Lotzsch | 1991-08-27 |
| 4997591 | Chiral smetic liquid crystals and glassy materials containing the same for displaying and storing information | Gerd Heppke | 1991-03-05 |
| 4988458 | Liquid crystal phase containing admixtures which effect temperature compensation | Gerd Heppke | 1991-01-29 |
| 4939287 | Chiral esters of mesogenic carboxylic acids | Christian Bahr, Gerd Heppke, Detlef Lotzsch | 1990-07-03 |
| 4826620 | Chiral phenolic esters of mesogenic carboxylic acids and their use as admixture in liquid crystal phases | Gerd Heppke, Detlef Lotzsch, Gunter Scherowsky | 1989-05-02 |
| 4818076 | Color-selective circular polarizer and its use | Gerd Heppke | 1989-04-04 |
| 4767194 | Blue phase liquid crystal system, method of operation and its use | Gerd Heppke, Heinz-Siegfried Kitzerow, Michael Krumrey | 1988-08-30 |
| 4744918 | Liquid crystal phase | Gerd Heppke | 1988-05-17 |
| 4650600 | Liquid crystal phase | Gerd Heppke | 1987-03-17 |
| 4264148 | Liquid crystal display devices having an induced cholesteric phase | Annerose Gobl-Wunsch, Gerd Heppke | 1981-04-28 |