Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4285692 | Granular preparation of vat dyestuffs and/or disperse dyestuffs | Willy Schiwy, Jurgen Schulze, Ferdinand Hummes, Peter Schulze, Reinhold Hornle +1 more | 1981-08-25 |