Issued Patents All Time
Showing 1–25 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7731820 | Compositions of fluorescent whitening agents | Robert Cockcroft, Ted Deisenroth, Winfried Steffen | 2010-06-08 |
| 7585333 | Triazinylaminostilbene disulphonic acid mixtures | Fabienne Cuesta, Ted Deisenroth | 2009-09-08 |
| 7566349 | Amphoteric fluorescent whitening agents | Goetz Scheffler, Ian J. Fletcher | 2009-07-28 |
| 7270771 | Triazinylaminostilbene disulphonic acid mixtures | Fabienne Cuesta, Georges Metzger, Roland Naef, Rainer Hans Traber | 2007-09-18 |
| 7247174 | Amphoteric fluorescent whitening agents | Goetz Scheffler, Ian J. Fletcher | 2007-07-24 |
| 6797752 | Use of whitening pigments for whitening paper coating compositions | — | 2004-09-28 |
| 6723846 | Triazinylaminostilbene derivative as fluorescent whitening agents | Georges Metzger, Serge Hauger, Fabienne Cuesta, Christophe Bulliard, Marc Roger Grienenberger | 2004-04-20 |
| 6620294 | Formulations of fluorescent whitening agents | Olli Jokinen, Rainer Hans Traber | 2003-09-16 |
| 6464735 | Fluorescent whitening agents | Georges Metzger, Dieter Reinehr | 2002-10-15 |
| 6464832 | Method for optically brightening paper | Thomas Engelhardt | 2002-10-15 |
| 6458169 | Fluorescent whitening agents | Georges Metzger, Dieter Reinehr | 2002-10-01 |
| 6365737 | Process for the preparation of stilbene compounds | Georges Metzger, Fabienne Cuesta, Dieter Reinehr, Rene Schlatter | 2002-04-02 |
| 6331626 | Triazinylaminostilbene compounds | Andre Geoffroy, Andreas Burkhard, Erwin Marti, Werner Schreiber, Josef Zelger | 2001-12-18 |
| 6302999 | Method for optically brightening paper | Thomas Engelhardt | 2001-10-16 |
| 6274761 | Process for the preparation of sulphonated distyryl-biphenyl compounds | Victor Paul Eliu, Julia Volkel, Roger Wolfgang Basler, Brigitte Gerhild Sereinig | 2001-08-14 |
| 6210449 | Fluorescent whitening agents | Georges Metzger, Dieter Reinehr | 2001-04-03 |
| 6153122 | Triazinylaminostilbene compounds | Andre Geoffroy, Andreas Burkhard, Erwin Marti, Werner Schreiber, Josef Zelger | 2000-11-28 |
| 6143888 | Use of triazine-based UVAs for use as quenchers in paper-making processes | Dieter Reinehr, Robert Hochberg, Georges Metzger | 2000-11-07 |
| 5976410 | Dispersions of fluorescent whitening agents | Rainer Hans Traber, Peter Ruf, Thomas Engelhardt, Karla Wilzer | 1999-11-02 |
| 5830241 | Fluorescent whitening agent formulation | Marc Roger Grienenberger | 1998-11-03 |
| 5622749 | Fluorescent whitening of paper | Thomas Ehlis, Josef Zelger | 1997-04-22 |
| 5254522 | Pressure-sensitive or heat-sensitive recording material | Rudolf Zink, Peter Mockli | 1993-10-19 |
| 5201998 | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Rosemarie Topfl, Michael Bernheim, Hubert Meindl, Hans Wegmuller, Dieter Werthemann | 1993-04-13 |
| 5064570 | Dispersion fluorescent brightener preparations | — | 1991-11-12 |
| 4956049 | Process for sizing paper with anionic hydrophobic sizing agents and cationic retention aids | Michael Bernheim, Dieter Strasilla, Bernardo de Sousa | 1990-09-11 |