Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7012137 | Phthalimidyl azo dyes, process for the preparation thereof and the use thereof | Antoine Clement, Alfons Arquint, Urs Lauk | 2006-03-14 |
| 6540794 | Azo dyes, a process for their preparation and their use in the dyeing or printing of hydrophobic fiber materials | Romeo Dreier, Alfons Arquint, Urs Lauk | 2003-04-01 |