Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4526705 | Light-collecting systems and the use of coumarin derivatives as energy converters in them | Frank Arndt, Uwe Claussen, Horst Harnisch | 1985-07-02 |
| 4447651 | 1,4-Bis-(4-chloro-2-methoxystyryl)-benzene | Bernhard Wehling | 1984-05-08 |
| 4326066 | Triazolyl coumarin compounds, processes for their preparation and their use as whiteners and laser dyestuffs | Udo Eckstein, Roderich Raue | 1982-04-20 |
| 4284787 | Process for the preparation of 1,2,3-triazoles substituted in the 2-position | Hans Knupfer | 1981-08-18 |
| 4274062 | Dyestuff laser | Uwe Brinkmann, Helmut Telle, Roderich Raue | 1981-06-16 |
| 4271293 | Benzofuranyl-benzimidazoles | Josef Bremen, Bernhard Wehling | 1981-06-02 |
| 4263435 | 6 -[2-Hydroxy-4-(1,2,3-triazol-2-yl)-phenyl]-2,4-dioxo-1,3,5-trimethyl-hexa hydro-s-triazines and their preparation | Florin Seng, Alfons Dorlars | 1981-04-21 |
| 4252720 | Pyrazoline compounds | Bernhard Wehling | 1981-02-24 |
| 4229579 | 3-(Halopyrazolyl)-7-triazolyl-coumarin compounds | Alfons Dorlars | 1980-10-21 |
| 4183853 | 1-[p-(2-Trialkylammonium)propylsulfonylphenyl]-3-(phenyl)-pyrazoline salts | Josef Schroeder | 1980-01-15 |