Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5594575 | Ferroelectric liquid-crystal systems having three or more chiral additives with different signs of the helical twist in the cholesteric phase | Claus Escher, Hans-Rolf Dubal, Takamasa Harada, Wolfgang Hemmerling, Gerhard Illian +3 more | 1997-01-14 |