Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4734490 | Water soluble phthalimide-azo-aniline dyes and mixtures thereof | Hansrudolf Schwander | 1988-03-29 |
| 4260770 | Naphtholactam dyes | Hansrudolf Schwander | 1981-04-07 |
| 4256896 | Naphtholactam dyestuffs | Hansrudolf Schwander | 1981-03-17 |
| 4246422 | Naphtholactam dyestuffs | Hansrudolf Schwander | 1981-01-20 |
| 4246410 | Naphtholactam dyestuffs | Hansrudolf Schwander | 1981-01-20 |
| 4236007 | Naphtholactam dyestuffs | Hansrudolf Schwander | 1980-11-25 |
| 4210757 | Novel naphthoylene-perinones disperse dyestuffs | Siegfried Dengler, Peter Loew, Hansrudolf Schwander | 1980-07-01 |