Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5188640 | "Use of 1-amino-2,7-di-[5'-((2""-chloro-4""-substituted amino-1,3,5-triazin-6-ylamino)-2'-sulfophenylazo]-8-hydroxynaphthalene-3 ,6-disulfonic acids for dyeing and printing" | — | 1993-02-23 |
| 5095101 | "1-Amino-2,7-di-[5'-(2""-chloro-4""-substituted amino-1,3,5-triazin-6""-ylamino)-2'-sulfophenylazo]-3,6-disulfonic acids" | — | 1992-03-10 |
| 4843152 | Copper complexes of disazo compounds having di- or tri- sulfonaphthol and 6-[2,4-di-(amino or substituted amino)-1,3,5-triazia-6-ylamino-]-1-hydroxy-3-sulfonaphthalene coupling component radicals | Paul Doswald | 1989-06-27 |
| 4699626 | Mixtures of copper complexes of disazo compounds: 4,4'-(3,3'-dihydroxybiphenylene) tetrazo component and disulfonaphthol and 3-sulfo-6-(2'-chloro-4'-chloro or hydroxy-1,3,5-triazin-6'-ylamino)-naphth-1-ol coupling component | Paul Doswald | 1987-10-13 |
| 4213897 | Disazo and trisazo compounds having a 3-pyridinium or substituted pyridinium-4-methyl-6-hydroxypyridone-2 coupling component radical | Helmut Moser | 1980-07-22 |