Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4246670 | Process for improving the color yield and fastness properties of dyeings produced with anionic dyes on cellulose fibre material and cationic fibre-reactive compounds | Pierre Perrin, Gert Hegar, Gerald Siegrist, Herbert Seiler | 1981-01-27 |
| 4247476 | Polymeric quaternary ammonium salts containing specific cationic recurring units | Jaroslav Haase, Hans-Ulrich Berendt | 1981-01-27 |
| 4233028 | Process for the level dyeing of polyacrylonitrile materials of slow, normal and rapid absorptive capacity | Josef Koller, Peter Moser, Manfred Motter, Pierre Galafassi | 1980-11-11 |
| 4181499 | Process for the level dyeing of polyacrylonitrile materials of slow, normal and rapid absorptive capacity | Joseph A. Koller, Manfred Motter, Peter Moser, Pierre Galafassi | 1980-01-01 |