Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5550217 | Azo dyes | — | 1996-08-27 |
| 5389108 | Process for fixing dyes | Katharina Fritzsche | 1995-02-14 |
| 5218095 | Phthalimidylazo dyes | — | 1993-06-08 |
| 5116958 | Disperse dyes which are convertible into a thermomigration fast form | Peter Liechti | 1992-05-26 |
| 5055567 | Disperse dyes which are convertible into a thermo-migration fast form | Peter Liechti, Karl Emmenegger | 1991-10-08 |