Issued Patents All Time
Showing 26–50 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4588810 | Basic triphendioxazine dyestuffs | Wolfgang Harms, Gunter Franke | 1986-05-13 |
| 4555580 | Process for the preparation of thioindigo compounds | Detlef-Ingo Schutze, Reinold Schmitz | 1985-11-26 |
| 4503224 | Halogenotriazinyl dyestuffs | Wolfgang Harms, Robert Kuth | 1985-03-05 |
| 4492790 | Vat dyestuffs of the trisanthraquinonylaminotriazine series | Walter Hohmann | 1985-01-08 |
| 4474697 | Fluorotriazine-group-containing azo dyestuffs | Wolfgang Harms | 1984-10-02 |
| 4446067 | Azo reactive dyestuffs | Horst Jager | 1984-05-01 |
| 4443369 | Sulphur dyestuffs | Helmut Seidler, Manfred Soll | 1984-04-17 |
| 4405248 | Advancing device in electrically driven typewriters and similar machines | Udo Schlegel, Heinz Ricke | 1983-09-20 |
| 4400504 | Dioxazine reactive dyestuffs | Wolfgang Harms | 1983-08-23 |
| 4377688 | Anthraquinone reactive dyestuffs, their preparation and their use for dyeing materials containing OH groups or amide groups | Wolfgang Harms, Klaus von Oertzen | 1983-03-22 |
| 4355163 | Anthraquinone reactive dyestuffs | Klaus von Oertzen, Wolfgang Harms | 1982-10-19 |
| 4332938 | Anthaquinone reactive dyestuffs, their preparation and their use for dyeing materials containing OH groups or amide groups | Wolfgang Harms, Klaus von Oertzen | 1982-06-01 |
| 4299966 | Process for the preparation of 4,4',7,7'-tetrachlorthioindigo in pigment form | Hans-Samuel Bien, Werner Beinert | 1981-11-10 |
| 4294580 | Reactive dyestuffs, their preparation and their use for dyeing materials containing OH or N | Hermann Henk, Peter Wild | 1981-10-13 |
| 4286962 | Phthalocyanine reactive dyestuffs, their preparation and their use for dyeing materials containing hydroxyl groups or amide groups | Volker Ehrig, Manfred Groll | 1981-09-01 |
| 4273553 | Anthraquinone reactive dyestuffs | Wolfgang Harms, Horst Jager, Klaus von Oertzen | 1981-06-16 |
| 4268267 | Phthalocyanine reactive dyestuffs | Karl H. Duchardt, Manfred Groll | 1981-05-19 |
| 4267107 | Reactive dyestuffs | Manfred Groll | 1981-05-12 |
| 4260778 | Process for the preparation of thioindigo compounds | Detlef-Ingo Schutze | 1981-04-07 |
| 4259248 | Process for the preparation of mixtures of dinitroanthraquinones with a high content of 1,5- and 1,8- dinitroanthraquinone | Walter Hohmann | 1981-03-31 |
| 4255325 | Reactive dyestuffs | Wolfgang Harms, Klaus van Oertzen | 1981-03-10 |
| 4242259 | Anthraquinone-azo reactive dyestuffs | Wolfgang Harms, Klaus von Oertzen | 1980-12-30 |
| 4213909 | Process for the preparation of 1-amino-4-bromoanthraquinone-2-sulfonic acid II | Gerhard Berg, Walter Hohmann, Karl-Julius Reubke | 1980-07-22 |
| 4214082 | Anthraquinone reactive dyestuffs | Wolfgang Harms, Klaus von Oertzen | 1980-07-22 |
| 4206306 | Reactive phthalocyanine dyestuffs containing a fluorotriazinyl group attached via a nitrogen bridge to the dyestuff molecule | Hans-Samuel Bien, Erich Klauke | 1980-06-03 |