Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5911911 | Polymerized liquid-crystalline compositions | Harald Keller, Karl Siemensmeyer, Peter Schuhmacher, Manfred Muller, Rudolf Zentel | 1999-06-15 |
| 5847068 | Cholesteric copolyisocyanates | Bruce M. Novak, Rudolf Zentel, Harald Keller | 1998-12-08 |