Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696242 | Polyazo dyes containing the radical of a bis-coupling component, and process for their production | Jordi B. Barra | 1997-12-09 |
| 5668259 | Metallizable disazo compounds having 1, 3-dihydroxybenzene bis-coupling component radicals, iron complexes thereof and mixtures of such iron complexes | Jordi Berenuger Barra, Herbert Holliger | 1997-09-16 |
| 5602237 | 1:2 metal complexes of polyazo dyes having a sulpho substituted 1-hydroxy-2-naphthyl group as the coupling component and their use as dyestuffs | Jordi B. Barra | 1997-02-11 |