Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4403995 | Sulphur dyestuffs, a process for their manufacture and their use from hydroxy-diphenylamine compounds | — | 1983-09-13 |
| 4381262 | Water-insoluble azo dyestuffs, their manufacture and their use | Ulrich Buhler, Rudolf Lowenfeld, Uwe Kosubek, Reinhard Hahnle, Rudolf Schickfluss | 1983-04-26 |