Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4921977 | Obtaining maleic anhydride not prone to discolor | Rolf Seubert, Johannes E. Schmidt | 1990-05-01 |
GM
Gerhard Michl
Overall (All Time): #3,901,903 of 4,157,543Top 95%
1
Patents All Time