Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7648535 | Agent for coloring keratin fibres | Juergen Schmenger, Petra Braun, Jolanthe Kujawa, Martina Glattefelder, Anne Entzminger +1 more | 2010-01-19 |
| 6685926 | Method and composition adjusted to the isoelectric point of hair for conditioning of oxidatively dyed hair | Ursula Hehner, Petra Braun, Ernst Flemming | 2004-02-03 |
| 6365136 | Compositions for removing or lightening hair color | Dirk Lauscher, Gabriele Hess, Helga Kreher, Petra Braun, Joerg Schmidt | 2002-04-02 |
| 6146429 | Carrier composition for oxidative dyeing of hair and method of dyeing hair using same | Anette Gast, Petra Braun, Wolfgang Balzer | 2000-11-14 |
| 6129770 | Hair dye agents with at least one conditioner | Mustafa Akram, Astrid Kleen | 2000-10-10 |
| 5922086 | Hair colorants based on perimidine derivatives | Wolfgang Bauer, Mustafa Akram | 1999-07-13 |