Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5395925 | Asymmetric sulfo group-containing disazo compounds containing two 6-halo-1,3,5-triazinyl groups | Werner Koch | 1995-03-07 |
| 5227477 | Dyes having one or two 2,4- or 4,6-dichloro-5-cyanopyrimidyl groups linked through bridging radicals containing at least two nitrogen atoms to chloro-1,3,5-triazinyl groups | Gunther Auerbach, Markus Doerr, Paul Doswald, Markus Gisler, Werner Koch +2 more | 1993-07-13 |
| 4820808 | Copper Complexes of disazo compounds having two substituted 2-hydroxyphenyl diazo component radicals and two 3-methylpyrazol-5-one coupling component radicals | Friedrich Lehr | 1989-04-11 |
| 4502866 | Symmetrical unsubstituted and substituted 2-halo-4-(4'-(trisulfonaphthylazo)phenylamino)-1,3,5-triazin-6-ylamino compounds | Werner Koch | 1985-03-05 |