Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7057024 | Black-dyeing inks and their use | Urs Lehmann, Athanassios Tzikas | 2006-06-06 |
| 6551364 | Dye mixtures, 1:2 cobalt complex formazan dyes and their use | Urs Lehmann | 2003-04-22 |
| 6521032 | Magenta inks comprising copper complex azo dyes based on 1-naphthol-di- or tri-sulfonic acids | Urs Lehmann | 2003-02-18 |
| 6500247 | Black-dyeing inks and their use | Urs Lehmann, Althanassios Tzikas | 2002-12-31 |
| 6428582 | Dye mixtures, 1:2 cobalt complex formazan dyes and their use | Urs Lehmann | 2002-08-06 |
| 6281339 | Addition products of acryloylamino-substituted dyes, and the preparation and use thereof | Urs Lehmann | 2001-08-28 |
| 6265554 | Copper complex azo dyes, their preparation and their use | Urs Lehmann | 2001-07-24 |
| 6241789 | Process for dyeing or printing and novel reactive dyes | Peter Scheibli, Peter Aeschilmann, Urs Lehmann | 2001-06-05 |
| 6063137 | Process for dyeing or printing and novel reactive dyes | Peter Scheibli, Peter Aeschlimann, Urs Lehmann | 2000-05-16 |
| 5973147 | Process for dichromatic or trichromatic dyeing or printing | Urs Lehmann, Klaus Hannemann | 1999-10-26 |
| 5944855 | Process for dichromatic or trichromatic dyeing or printing | Urs Lehmann, Klaus Hannemann | 1999-08-31 |
| 5779740 | Process for dichromatic or trichromatic dyeing or printing | Urs Lehmann, Klaus Hannemann | 1998-07-14 |
| 5760195 | Monoazo triazinyl group-containing fiber reactive dyes, processes for their preparation and their use | Urs Lehmann | 1998-06-02 |
| 5760194 | Monoazotriaziayl group-containing fiber reactive dyes, processes for their preparation and their use | Urs Lehmann | 1998-06-02 |
| 5667534 | Dye mixtures comprising 1:2 chromium complex dyes, and 1:2 chromium complex dyes | Urs Lehmann | 1997-09-16 |
| 5504227 | Anthraquinone dyes, process for their preparation and the use thereof | Urs Lehmann | 1996-04-02 |