Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6194554 | Disazo dyes | Klaus Kunde | 2001-02-27 |
| 6084078 | Disazo dyestuffs for dyeing cellulosic materials | — | 2000-07-04 |
| 5883234 | Process for dyeing cellulosic materials with disazo dyestuffs | Klaus Kunde | 1999-03-16 |
| 5534052 | Polymeric dyestuffs and their use in inks for ink jet printing processes | Karin Hassenruck | 1996-07-09 |
| 5503666 | Dyestuffs and their use in inks for ink-jet printing processes | Karin Hassenruck | 1996-04-02 |
| 5484900 | 1:2 chromium complex dyestuffs | — | 1996-01-16 |
| 5391207 | Liquid dyestuff preparations | Rainer Gerlach, Wolfgang Mullers | 1995-02-21 |
| 5250671 | Unsymmetrical 1:2 chromium complex dyestuffs | — | 1993-10-05 |
| 5074884 | Process for the dyeing of leather with anionic dyes and polyaminoamide resin as dyeing auxiliary | Harro Traubel | 1991-12-24 |
| 4497734 | Asymmetrical 1:2 chromium complexes derived from azo and azomethine dyes | — | 1985-02-05 |
| 4424152 | Metal complex dyestuffs, processes for their preparation and their use for dyeing nitrogen-containing materials | Hermann Goebel | 1984-01-03 |
| 4339380 | Azo dyestuffs | Herbert Hugl, Gerhard Wolfrum, Karl H. Schundehutte, Jochen Westphal | 1982-07-13 |
| 4234479 | Chromium mixed complex dyestuffs of phenyl-azo-pyrazole components | Walter Scholl, Karl H. Schundehutte | 1980-11-18 |