Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5582621 | Bulk dyeing of plastics | Peter Roschger, Stephan Michaelis | 1996-12-10 |
| 5420284 | Process for the preparation of 2-substituted 5-alkyl-pyridines | Helmut Kraus, Alexander Klausener | 1995-05-30 |
| 5328993 | Cationic triazatrimethine dyestuffs | Karl-Heinrich Lange, Roderich Raue, Alfred Brack | 1994-07-12 |
| 5250498 | Herbicidal 2-iminopyridines | Roland Andree, Klaus Jelich, Gunther Beck, Peter Babczinski, Klaus Lurssen +2 more | 1993-10-05 |
| 4895957 | Process for the preparation of 4-substituted 3-methyl-1-aryl-5-amino-pyrazoles | — | 1990-01-23 |
| 4892958 | Preparation of 5-amino-1-phenyl-4-nitropyrazoles | — | 1990-01-09 |
| 4705861 | Aminophenylbenzothiazoles | Karl H. Schundehutte | 1987-11-10 |
| 4579805 | Color photographic recording material containing a thiophene azo dye releaser for cyan dyes | Peter Bergthaller, Rudolf Stolzenburg, Paul Marx, Holger Heidenreich | 1986-04-01 |
| 4500715 | 2,5-Diamino-1,3,4-thiadiazole derivatives | — | 1985-02-19 |
| 4432897 | Cationic thiadiazolyl triazene dyestuffs | — | 1984-02-21 |
| 4268438 | Cationic 1,3,4-thiadiazole dyestuffs | — | 1981-05-19 |