Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7686852 | Monoazo dyes | Urs Daettwyler | 2010-03-30 |
| 7559959 | Bridged monoazo dyes | Ulrich Geiger | 2009-07-14 |
| 6930178 | 1:2 chromium complex dyes | Rainer Nusser, Reinhard Pedrazzi | 2005-08-16 |
| 5354849 | Sulfo group-containing disazo compounds containing substituted amino-1,3,5-triazinil or- chloropyrimidyl | — | 1994-10-11 |
| 4198268 | Process for producing colored paper using granulated dye compositions | Alfred Frei, Helmut Moser, August Schweizer | 1980-04-15 |