Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5684139 | Direct disazo dyestuffs | Peter Wild, Karin Hassenruck | 1997-11-04 |
| 5637679 | Azo dyestuffs for dyeing and printing cellulose-containing fiber materials in an ink jet process | Karin Hassenruck, Peter Wild | 1997-06-10 |