Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7648535 | Agent for coloring keratin fibres | Juergen Schmenger, Petra Braun, Martina Glattefelder, Anne Entzminger, Anette Sallwey +1 more | 2010-01-19 |
| 7591862 | Dyes for keratinic fibers comprising a special anionic thickener | Jurgen Schmenger, Melanie Bonn | 2009-09-22 |
| 7465322 | Nacreous colorant for keratin fibers | Juergen Schmenger | 2008-12-16 |
| 5674476 | Process for making a persulfate-containing granulate for decolorizing or bleaching hair | Thomas Clausen, Wolfgang Balzer, Volker Port | 1997-10-07 |