Issued Patents All Time
Showing 76–87 of 87 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4506089 | Preparation of methyl m-nitrobenzoate | Alfred Hackenberger, Manfred Gaeng | 1985-03-19 |
| 4491662 | Aminomethyl group containing cationic dyes | Manfred Ruske | 1985-01-01 |
| 4472581 | Imidazomethylene dyes | Manfred Ruske | 1984-09-18 |
| 4466899 | Dyes for use in liquid crystal mixtures | Walter Ditter, Karl-Heinz Etzbach, Dieter Horn, Heinz Eilingsfeld | 1984-08-21 |
| 4451398 | Dyes containing imidazolymethylene groups | Manfred Ruske | 1984-05-29 |
| 4404389 | Thiazole containing coumarin compounds | Christos Vamvakaris, Wolfgang Mach | 1983-09-13 |
| 4393005 | Cationic phthalocyanine dyes | Manfred Ruske, Erwin Hahn | 1983-07-12 |
| 4271303 | Heterocyclic compounds | Christos Vamvakaris, Peter Neumann | 1981-06-02 |
| 4220777 | Naphthalimide derivatives | Jochen Karg, Walter Himmele | 1980-09-02 |
| 4212709 | Acidic nickel electroplating bath containing sulfobetaines as brighteners and levelling agents | Dieter Schneider, Guenther Gotsmann, Albert Hettche | 1980-07-15 |
| 4187226 | Pyrazoline compounds | Albert Hettche | 1980-02-05 |
| 4183851 | Pyrazoline compounds | Albert Hettche | 1980-01-15 |