Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668259 | Metallizable disazo compounds having 1, 3-dihydroxybenzene bis-coupling component radicals, iron complexes thereof and mixtures of such iron complexes | Jordi Berenuger Barra, Jose R. Sorolla | 1997-09-16 |
| 5319075 | Iron complexes and mixtures of iron complexes of disazo compounds having 1,3-dihydroxybenzene coupling component radicals, their use and metal-free disazo compounds useful as intermediates | Jordi Berenguer Barra, Jose Rocas Sorolla | 1994-06-07 |
| 5008379 | Chromium complexes of sulfo group containing disazo compounds having a resorcinol biscoupling component radical | — | 1991-04-16 |
| 4834769 | Compositions for the dyeing of leather | Michel Dien | 1989-05-30 |
| 4820309 | 1:2-chromium complex dyes for tanned leather | — | 1989-04-11 |
| 4623720 | 1:2 metal complexes of AZO compounds having a central substituted phenylenesulfonylaminophenylene radical | — | 1986-11-18 |