Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4552953 | Water-insoluble monoazo dyestuffs, their preparation and their use | Ulrich Buhler, Klaus Kuhlein, Horst Tappe, Maria Kallay, Rudolf Lowenfeld | 1985-11-12 |
| 4440681 | Water-insoluble monoazo dyestuffs and their preparation | Horst Tappe, Rudolf Lowenfeld, Maria Kallay | 1984-04-03 |
| 4431585 | Water-insoluble azo dyestuffs, processes for their manufacture and their use for dyeing and printing synthetic hydrophobic fiber material | Horst Tappe, Ulrich Buhler, Kurt Roth, Hans-Jurgen Weyer | 1984-02-14 |
| 4420308 | Process for the production of reserve effects on polyester textiles and polyester/cellulose mixed fibre textiles: discharge printing with disperse azo dye with alkyl or alkoxy carbonyl, cyand and hydroxy phenyl group | Ulrich Buhler, Horst Kindler, Klaus Kuhlein, Maria Kallay, Rudolf Lowenfeld +1 more | 1983-12-13 |
| 4415494 | Water-insoluble monoazo dyestuffs, their manufacture and their use | Ulrich Buhler, Rudolf Lowenfeld, Maria Kallay | 1983-11-15 |
| 4381262 | Water-insoluble azo dyestuffs, their manufacture and their use | Ulrich Buhler, Dieter Cornelius, Rudolf Lowenfeld, Reinhard Hahnle, Rudolf Schickfluss | 1983-04-26 |