Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374302 | Water-insoluble sulphur dyes, their preparation and use | Wolfgang Bauer, Josef Ritter, Wilhelm Mauelshagen | 1994-12-20 |
| 5368637 | Water-insoluble sulphur dyes, their preparation and use | Wolfgang Bauer, Josef Ritter, Wilhelm Mauelshagen | 1994-11-29 |