Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8163688 | Storage-stable fluorescent whitener formulations | Serge Schroeder | 2012-04-24 |
| 7497971 | Mixtures of fluorescent whitening agents | Jean-Jacques Donze, Marie Meyberger, Michael Milde, Volker Papendick | 2009-03-03 |
| 6696406 | Fluorescent whitening agent formulation for detergents | Gerhard Merkle, Jurgen Kaschig, Serge Schroeder | 2004-02-24 |
| 6660705 | Liquid fluorescent whitening agent formulation | Rainer Hans Traber, Helena Dbaly | 2003-12-09 |
| 6331626 | Triazinylaminostilbene compounds | Peter Rohringer, Andre Geoffroy, Andreas Burkhard, Erwin Marti, Werner Schreiber | 2001-12-18 |
| 6153122 | Triazinylaminostilbene compounds | Peter Rohringer, Andre Geoffroy, Andreas Burkhard, Erwin Marti, Werner Schreiber | 2000-11-28 |
| 6133215 | Fluorescent whitening agent | Andreas Burkhard, Serge Schroeder, Bernard Schultz | 2000-10-17 |
| 5695687 | Anhydrous fluorescent whitening agent formulation | Serge Schroeder | 1997-12-09 |
| 5622749 | Fluorescent whitening of paper | Peter Rohringer, Thomas Ehlis | 1997-04-22 |
| 5575958 | Aqueous dispersions of sparingly soluble UV absorbers | Martin J ollenbeck | 1996-11-19 |
| 5518657 | Storage-stable formulation of fluorescent whitening mixtures | Werner Fringeli | 1996-05-21 |
| 5437818 | Hydrates of the disodium salt or dipotassium salt of 4,4'-bis(2-sulfostyryl)biphenyl | Thomas Ehlis, Andre Geoffroy, Erwin Marti, Karlheinz Franke, Andreas Burkhard | 1995-08-01 |
| 5429767 | Storage-stable whitener formulation | — | 1995-07-04 |
| 5076968 | Aqueous storage-stable whitener formulation with an anionic polysaccharide stabilizer | Werner Fringeli | 1991-12-31 |