Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6555664 | Phthalimidyl azo pigments, method for producing same and utilisation thereof | Urs Lauk, Antoine Clement, Alfons Arquint | 2003-04-29 |
| 6540794 | Azo dyes, a process for their preparation and their use in the dyeing or printing of hydrophobic fiber materials | Jean-Claude Wilhelm, Alfons Arquint, Urs Lauk | 2003-04-01 |