Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874857 | Aminoalkoxytriphendioxazine dyestuffs useful for dyeing and printing hydroxyl- and amino-containing materials | — | 1989-10-17 |
| 4845213 | Process for preparing triphendioxazine compounds | Josef-Walter Stawitz | 1989-07-04 |
| 4837320 | One-amine-2-sulpho-4-[(4-halo-6-amino triazinyl-2)aminocyclohexylamino]anthraquinone reactive dyestuffs | Klaus Wunderlich, Klaus von Oertzen | 1989-06-06 |
| 4806640 | Triphendioxazine reactive dyestuffs | Klaus Wunderlich | 1989-02-21 |