Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4917731 | Water-soluble black trisazo dyestuffs | Wolfgang Bauer, Konstantin Morgenroth, Josef Ritter | 1990-04-17 |
| 4902826 | Process for the preparation of 2-arylthiobenzoic acids | Wolfgang Bauer, Manfred Langer | 1990-02-20 |
| 4828570 | Tanning agent and a process for its preparation | Ulrich Riegel, Fritz Engelhardt, Helmut Croon, Hermann Becker, Werner Lotz | 1989-05-09 |
| 4695656 | Process for the preparation of 2,4-dinitrophenyl ethers | Friedrich Schophoff | 1987-09-22 |
| 4677209 | Process for the preparation of 2-mercaptobenzoxazoles | Ulrich Kussmaul, Manfred Langer, Johannes Becherer, Herbert Wille, Rolf Muller | 1987-06-30 |
| 4348204 | Aqueous dyestuff formulation, a process for its preparation and its use for dyeing and printing | Wolfgang Bauer, Heinz Dickmanns, Konstantin Morgenroth, Joachim Ribka | 1982-09-07 |
| 4271073 | 6-Substituted-9-(2-hydroxyethyl)-1,2,3,4-tetrahydro carbazol-1-one | Heinz Bender, Rudi Beyerle, Karl-Heinz Keil, Heinz Gunter Greve | 1981-06-02 |