Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5099534 | Continuous dyeing process | Oskar Annen, Franz Somm | 1992-03-31 |
| 5032142 | Trichromatic azo dye mixtures and their use for dyeing cellulose and leather | Walter B. Egger | 1991-07-16 |
| 4432770 | Rapid dyeing of polyester fibers with a mixture of disperse dyes | Rolf Hasler, Beat Henzi, Hermann Ulshoefer | 1984-02-21 |