Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4685933 | Concentrated reactive dyestuff solutions containing cyanamide compound as stabilizer | Joachim Wolff, Karlheinz Wolf | 1987-08-11 |
| 4278436 | Dyeing process | Heinz Minwegen | 1981-07-14 |