Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8679199 | Formulations of fluorescent whitening agents in dispersed form | Serge Gruetter, Serge Schroeder, Andrea Frey | 2014-03-25 |
| 7497971 | Mixtures of fluorescent whitening agents | Marie Meyberger, Michael Milde, Volker Papendick, Josef Zelger | 2009-03-03 |
| 7425222 | Process for improving the sun protection factor of cellulosic fibre material | Georges Metzger, Hans Kramer, Serge Hauger, Volker Papendick, Michael Milde +4 more | 2008-09-16 |