Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5542956 | Process for dyeing or printing hydroxyl group containing fiber materials | David McMullan, Urs Lauk | 1996-08-06 |
| 5328995 | Azo dyes containing triazine middle components and a 1,4-phenylene-2,5-disubstituted coupling component | Urs Lauk | 1994-07-12 |
| 5324330 | Dye mixtures and the use thereof | Urs Lauk | 1994-06-28 |
| 5320648 | Process for dyeing or printing hydroxyl group containing fibre materials | David McMullan, Urs Lauk | 1994-06-14 |
| 5176717 | Use of sulfonated polyazo dyes for dyeing leather in brilliant fast red shades | Peter Moser, Alois Puntener | 1993-01-05 |
| 5147410 | Process for the end-to-end dyeing of cellulosic fibres: desalted direct dye and migration inhibitor | Anette Heindl, Thomas Stockhorst | 1992-09-15 |
| 5059682 | Water-soluble phthalocyanine compounds, process for their preparation and their use | — | 1991-10-22 |
| 4997919 | Azo direct dyes containing a non-reactive triazinyl moiety | — | 1991-03-05 |
| 4992532 | Water-soluble phthalocyanine compounds, preparation and use thereof | — | 1991-02-12 |
| 4699735 | Process for the preparation of 1,4-diaminoanthraquinone-2-sulfonic acid | Maurice Grelat | 1987-10-13 |
| 4661292 | Process for the preparation of 1,4-diamino-2,3-dicyanoanthraquinone | Maurice Grelat | 1987-04-28 |
| 4550178 | Dye mixture of 1,4-diamino anthraquinone-N-gamma-methoxy propyl-2,3-dicarboximide and 1,4-diamino anthraquinone-N-methoxyethoxy propyl-2,3-dicarboximide, processes for producing it, useful for dyeing and printing hydrophobic fiber materials. | Urs Karlen, Roland Putzar | 1985-10-29 |