Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5093247 | Phenanthridine derivatives, process for the preparation thereof, and compositions containing them | Gabriele Fendrich, Willy Zimmermann, Johannes Gruner | 1992-03-03 |
| 4939158 | Phenanthridine derivatives and compositions containing them | Gabriele Fendrich, Willy Zimmermann, Johannes Gruner | 1990-07-03 |