Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5554774 | Preparation of chlorinated violanthrones or isoviolanthrones | Udo Bergmann, Heinrich Kowarsch | 1996-09-10 |
GA
Gerhard Sch afer
Overall (All Time): #3,752,235 of 4,157,543Top 95%
1
Patents All Time