Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4377535 | Process for the preparation of nitro-T-acid (8-nitro-naphthalene-1,3,6-trisulphonic acid) | Reinhard Kaiser, Horst Behre, Jurgen Dammann, Axel Vogel | 1983-03-22 |
| 4375562 | Process for the preparation of bis-(amino-phenyl)-disulphides | Heinz U. Blank, Theodor Pfister | 1983-03-01 |
| 4341719 | Process for the preparation of 1-amino-2-ethoxy-naphthalene-6-sulphonic acid | Theodor Pfister, Manfred Niese, Peter Wenzl | 1982-07-27 |