Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5383961 | Water-soluble sulphur dyes, their preparation and use | Wolfgang Bauer, Gert Nagl, Willi Steckelberg, Josef Ritter | 1995-01-24 |
| 5374302 | Water-insoluble sulphur dyes, their preparation and use | Wolfgang Bauer, Willi Steckelberg, Josef Ritter | 1994-12-20 |
| 5368637 | Water-insoluble sulphur dyes, their preparation and use | Wolfgang Bauer, Willi Steckelberg, Josef Ritter | 1994-11-29 |