Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4978747 | Colorants obtained by reacting a NH.sub.2 -containing dyestuff with a diisocyanate followed by reaction of this adduct with a diamine | Karl-Arnold Weber, Klaus Kunde, Jochen Westphal, Klaus Wunderlich | 1990-12-18 |
| 4777247 | Heavy metal-containing monoazo dyes | — | 1988-10-11 |
| 4772687 | Metal complex dyestuffs useful as solvent, direct, pigment or fiber-reactive dyes | — | 1988-09-20 |
| 4670548 | Sulfo-group-containing trisazo dyestuffs | Jochen Westphal | 1987-06-02 |
| 4563518 | Fibre-reactive fluorothriazine-group-containing azo dyestuffs | — | 1986-01-07 |
| 4556707 | Triazole-group-containing disazo reactive dyestuff | — | 1985-12-03 |
| 4548761 | Process for the preparation of 1-aminobenzene-2-sulphonic acids | Martin Michna | 1985-10-22 |
| 4540776 | Reactive fluorotriazinylaminonaphthotriazolyphenylazopyridone or pyrimidone dyestuffs | Erich Kramer, Karl H. Schundehutte, Horst Nickel | 1985-09-10 |
| 4514188 | Use of disazo-copper complex dyestuffs for dyeing natural and synthetic materials | Martin Michna | 1985-04-30 |
| 4460505 | Dyestuffs, processes for their preparation and their use for dyeing materials containing hydroxyl groups or nitrogen | Karl H. Schundehutte | 1984-07-17 |
| 4337195 | Azo dyestuffs | Hans-Joachim Vater, Horst Nickel | 1982-06-29 |
| 4329282 | Fluoro-triazine-containing fibre-reactive disazo dyestuffs | — | 1982-05-11 |
| 4294580 | Reactive dyestuffs, their preparation and their use for dyeing materials containing OH or N | Klaus Wunderlich, Peter Wild | 1981-10-13 |