Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696258 | Process for the preparation of triphendioxazine dyestuffs amidated on both sides | Karl-Josef Herd | 1997-12-09 |
| 5672738 | Process for the preparation of 3-(N-aryl-amino)-propyl-2'-sulfatoethyl-sulfonyl compounds | Michael Meier, Werner Russ | 1997-09-30 |
| 5607481 | Fiber-reactive anthraquinone dyes | Werner Russ | 1997-03-04 |