Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668260 | Tetrakisazo Compounds, the method of preparation thereof and the process of pyeing | Wolfgang Bauer, Dieter Baumgart | 1997-09-16 |
| 5597387 | Water-soluble polyazo dyestuffs | Wolfgang Bauer, Dieter Baumgart | 1997-01-28 |