Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5616678 | Azo dyestuff- and urethane-containing polyadduct and its use in nonlinear optics | Stefan Beckmann, Karl-Heinz Etzbach, R udiger Sens | 1997-04-01 |
| 5583176 | Water-emulsifiable polyisocyanates | — | 1996-12-10 |