Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4499015 | Chromium complex azo dyestuffs and mixtures of chromium complex azo dyestuffs derivated from 1-amino-2-hydroxynaphtalene-4-sulphonic acids or aminophenols | — | 1985-02-12 |
| 4370268 | Reactive dyestuffs | — | 1983-01-25 |
| 4248771 | Metal complex reactive dyestuffs | Horst Nickel | 1981-02-03 |
| 4234479 | Chromium mixed complex dyestuffs of phenyl-azo-pyrazole components | Winfried Mennicke, Karl H. Schundehutte | 1980-11-18 |