Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4621138 | Triphendioxazine dyestuffs | Horst Jager, Karl-Josef Herd | 1986-11-04 |
| 4331442 | Process for dyeing cellulose textile materials by the padding process | Heinrich Uhlig, Udo-Winfried Hendricks | 1982-05-25 |