Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7863478 | UV filters | Christophe Carola, Frank Pfluecker, Herwig Buchholz, Hansjurgen Driller, Evgeniy V. Blyumin | 2011-01-04 |
| 7101537 | Tricyclic quinoxaline and quinoline derivatives as a UV filter | Frank Pfluecker, Michael Schwarz, Volker Scholz | 2006-09-05 |
| 5663366 | Process for the synthesis of 4,5-diaminopyrazole derivatives useful for dyeing hair | Stefan Gerstung, Thomas Clausen, Wolfgang Balzer | 1997-09-02 |
| 5534267 | Composition for the oxidative dyeing of hair containing 4,5-diaminopyrazole derivatives as well as new 4,5-diaminopyrazole derivatives and process for their synthesis | Stefan Gerstung, Thomas Clausen, Wolfgang Balzer | 1996-07-09 |
| 5430159 | N-phenylaminopyrazole derivatives as well as composition and process for the dyeing of hair | Stefan Gerstung, Thomas Clausen, Wolfgang Balzer | 1995-07-04 |
| 5380340 | Hair dye containing aminopyrazole derivatives as well as pyrazole derivatives | Stefan Gerstung, Thomas Clausen, Wolfgang Balzer | 1995-01-10 |
| 5061289 | Oxidation hair dye composition containinng diaminopyrazol derivatives and new diaminopyrazol derivatives | Thomas Clausen, Ute Kern | 1991-10-29 |