Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5204342 | Saturated tetracyclic nitrogen heterocycles | Wolfgang Frostl, Cesare Mondadori, Armin Zust | 1993-04-20 |
| 5135930 | Hydrogenated nitrogen containing tetracycles having two nonadjacent lactam rings | Wolfgang Frostl, Cesare Mondadori, Armin Zust | 1992-08-04 |