Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5078794 | Process for preparing 4,4'-diamino-1,1'-dianthraquinonyl pigments | Detlef-Ingo Schutze, Anton Adams | 1992-01-07 |
| 4969954 | Process for preparing 4,4'-diamino-1,1'-dianthraquinonyl pigments | Detlef-Ingo Schutze, Anton Adams | 1990-11-13 |
| 4783195 | Process for the preparation of a concentrated aqueous reactive dyestuff solution: triphenyl-dioxazine dyes, lithium salts | Wolfgang Harms | 1988-11-08 |
| 4342701 | Process for the preparation of 4,5-dinitro-1,8-dihydroxyanthraquinone | Gunter Gehrke | 1982-08-03 |