Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5001227 | Fibre-reactive 1:1 chromium complex azo or azomethine dyes having a bidentate chelating group and a monofunctional neutral ligand | Ulrich Schlesinger, Gerhard Back | 1991-03-19 |
| 4990598 | Fibre-reaction 1:1 chromium complex azo or azomethine dyes having a bidentate chelating group and a monofunctional neutral ligand | Ulrich Schlesinger, Gerhard Back | 1991-02-05 |
| 4813972 | Fiber-reactive chromium complexes and their preparation and use for polyamide, leather and cotton | Ulrich Schlesinger, Gerhard Back | 1989-03-21 |
| 4723001 | Fibre-reactive chromium complexes and their preparation and use | Ulrich Schlesinger, Gerhard Back | 1988-02-02 |
| 4710198 | 1:2 chromium or cobalt metal complex dyes and use thereof for dyeing leather | Fabio Beffa | 1987-12-01 |
| 4704133 | Process for the photochemical stabilization of synthetic polyamide fibre materials with water-soluble copper complex dye | Gerhard Reinert, Gerhard Back | 1987-11-03 |
| 4678851 | Metal dye complexes containing an azo or azomethine dye and a colorless ligand with the C.dbd.N--N.dbd.C group | Gerhard Back, Ulrich Schlesinger | 1987-07-07 |
| 4544739 | Fibre-reactive chromium complex Azo-azomethine dyes | Arthur Buhler | 1985-10-01 |
| 4514187 | Process for dyeing differential-dyeing polyamide fibres | Helmut Raisin, Thys Bouwknegt | 1985-04-30 |
| 4436659 | Metalized dyes, their manufacture and use | Arthur Buhler | 1984-03-13 |
| 4432898 | Sulfo-substituted fibre-reactive 1:2-chromium complex azo dyes | Gerhard Back, Fabio Beffa | 1984-02-21 |
| 4416815 | Fiber-reactive unsymmetrical 1:2 chromium complex azo dyes | Arthur Buhler | 1983-11-22 |
| 4364864 | 1:2 Cobalt and chromium complex unsymmetrical azo dyes | Fabio Beffa, Gerhard Back | 1982-12-21 |
| 4318849 | Novel metallized dyes, their manufacture and use | Arthur Buhler | 1982-03-09 |
| 4217270 | Sulfo substituted chromium containing azo pyrazolone dyestuff | — | 1980-08-12 |
| 4215042 | Copper, and nickel complexes of azo dyestuffs | Arthur Buhler | 1980-07-29 |
| 4210582 | Water-soluble pyrazolone-imide containing azo dyestuffs | Rene de Montmollin | 1980-07-01 |