Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5384068 | Switchable columnar liquid-crystalline systems | Harald Bock, Gerd Heppke | 1995-01-24 |
WH
Wolfgang Helfrich
Overall (All Time): #3,762,680 of 4,157,543Top 95%
1
Patents All Time