Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4240964 | 2-(O-Hydroxyphenyl)-pyrrole and process for its preparation | Horst Koenig, Albrecht Franke, Fritz-Frieder Frickel, Wolfgang Steglich | 1980-12-23 |
NE
Norbert Engel
Overall (All Time): #4,126,286 of 4,157,543Top 100%
1
Patents All Time