Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5204342 | Saturated tetracyclic nitrogen heterocycles | Wolfgang Frostl, Cesare Mondadori, Dietrich Strub | 1993-04-20 |
| 5135930 | Hydrogenated nitrogen containing tetracycles having two nonadjacent lactam rings | Wolfgang Frostl, Cesare Mondadori, Dietrich Strub | 1992-08-04 |
| 5112855 | Hydrogenated 1-benzooxacycloalkylpyridinecarboxylic acid compounds and compositions | Wolfgang Frostl | 1992-05-12 |
| 4957928 | Hydrogenated 1-benzooxacycloalkylpyridinecarboxylic acid compounds | Wolfgang Frostl | 1990-09-18 |
| 4939160 | Hydropyridine derivatives | Georg von Sprecher, Wolfgang Frostl | 1990-07-03 |
| 4833169 | Hydropyridine derivatives | Georg von Sprecher, Wolfgang Frostl | 1989-05-23 |