Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8679199 | Formulations of fluorescent whitening agents in dispersed form | Serge Gruetter, Jean-Jacques Donze, Andrea Frey | 2014-03-25 |
| 8163688 | Storage-stable fluorescent whitener formulations | Josef Zelger | 2012-04-24 |
| 6696406 | Fluorescent whitening agent formulation for detergents | Gerhard Merkle, Jurgen Kaschig, Josef Zelger | 2004-02-24 |
| 6133215 | Fluorescent whitening agent | Josef Zelger, Andreas Burkhard, Bernard Schultz | 2000-10-17 |
| 5695687 | Anhydrous fluorescent whitening agent formulation | Josef Zelger | 1997-12-09 |