Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679115 | Radiation-induced fixation of dyes | Katharina Fritzsche, Peter Scheibli | 1997-10-21 |
| 5616695 | Azo dyes containing a 1-alkyl-6-hydroxy-4-methyl-3-sulfomethyl-pyrid-2-one coupling component | — | 1997-04-01 |