Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6248887 | Process for preparing bis-alkoxy-triazinyl-amino-containing stilbene disulphonic acids or their derivatives | Uwe Vogt, Udo Eckstein, Rolf Brockmann, Dietmar Fiedel | 2001-06-19 |
| 6121444 | Process for preparing substituted 4,4'-diaminostilbene-2,2'-disulphonic acid salts | Udo Eckstein, Uwe Vogt, Rolf Brockmann | 2000-09-19 |
| 6068695 | Process for the continuous preparation of quinacridones | Thomas R. Flatt, Mark A. Putnam | 2000-05-30 |
| 6025490 | Process for the preparation of substituted 4,4'-diaminostilbene-2,2'-disulphonic acids | Rolf Brockmann, Udo Eckstein, Detlef Szeymies | 2000-02-15 |