Issued Patents 2003
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6660045 | Hair colorant preparation | Bernd Meinigke, Norbert Schettiger, Konstantin Goutsis | 2003-12-09 |
| 6648925 | Coloring agent comprising transition metals | Bernd Mayer, Peter Kuhm, Gertrud Ewald, Hans-Oscar Stephan, Melita Heller | 2003-11-18 |
| 6635241 | Aminophenol derivatives and their use in oxidative hair dyes | David Rose, Bernd Meinigke | 2003-10-21 |
| 6620408 | Bleaching composition | Winifried Neuhaus | 2003-09-16 |
| 6537330 | Colorants | Klaus Schumann, Winifried Neuhaus | 2003-03-25 |