Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5163971 | Dyestuff mixtures of metal phthalocyanine and pyridone azo reactive dyes | Josef-Walter Stawitz, Frank-Michael Stohr, Karl-Josef Herd, Karl H. Schundehutte | 1992-11-17 |
| 5070193 | Reactive phthalocyanine dyestuffs | Karl H. Schundehutte, Josef-Walter Stawitz | 1991-12-03 |
| 5051501 | Reactive phthalocyanine dyestuffs containing a fluorochloropyrimidinyl group | Karl H. Schundehutte, Josef-Walter Stawitz | 1991-09-24 |
| 4647409 | Copper-phthalocyanine dyestuffs | Dieter Ockelmann | 1987-03-03 |
| 4537721 | Cu-Pc dyestuffs | Dieter Ockelmann | 1985-08-27 |
| 4286962 | Phthalocyanine reactive dyestuffs, their preparation and their use for dyeing materials containing hydroxyl groups or amide groups | Volker Ehrig, Klaus Wunderlich | 1981-09-01 |
| 4282000 | Dyestuff solutions, their preparation and their use for dyeing paper | Friedhelm Muller | 1981-08-04 |
| 4277245 | Process for dyeing and printing cellulose fibres | Werner Kuhnel, Robert Kuth | 1981-07-07 |
| 4268267 | Phthalocyanine reactive dyestuffs | Karl H. Duchardt, Klaus Wunderlich | 1981-05-19 |
| 4267107 | Reactive dyestuffs | Klaus Wunderlich | 1981-05-12 |
| 4246174 | Process for the preparation of phthalocyanine reactive dyestuffs | — | 1981-01-20 |
| 4198203 | Dyestuff solutions of copper phthalocyanine derivatives for paper dyeing | Friedhelm Muller | 1980-04-15 |