Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4492790 | Vat dyestuffs of the trisanthraquinonylaminotriazine series | Klaus Wunderlich | 1985-01-08 |
| 4408056 | Anthraquinone vat dyestuffs | Josef-Walter Stawitz | 1983-10-04 |
| 4259248 | Process for the preparation of mixtures of dinitroanthraquinones with a high content of 1,5- and 1,8- dinitroanthraquinone | Klaus Wunderlich | 1981-03-31 |
| 4213909 | Process for the preparation of 1-amino-4-bromoanthraquinone-2-sulfonic acid II | Gerhard Berg, Karl-Julius Reubke, Klaus Wunderlich | 1980-07-22 |
| 4210413 | Transfer printing process | Gunter Gehrke | 1980-07-01 |
| 4206130 | Process for the preparation of 1,5-dichloroanthraquinone | Helmut Herzog, Helmut Seidler | 1980-06-03 |
| 4203885 | Process for the mononitration of anthraquinone | Klaus Wunderlich, Helmut Seidler | 1980-05-20 |