Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690698 | Black dye mixtures of fiber-reactive azo dyes and their use for dyeing hydroxyl- and/or carboxamido-containing fiber material | Andreas von der Eltz, Werner Russ | 1997-11-25 |