Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6613104 | Process for preparing dyes and/or brightener formulations | Wolfgang Zarges, Rolf Brockmann, Detlef Szeymies | 2003-09-02 |
| 6241786 | Process for preparing dyes and/or brightener formulations | Wolfgang Zarges, Rolf Brockmann, Detlef Szeymies | 2001-06-05 |