Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6635241 | Aminophenol derivatives and their use in oxidative hair dyes | Horst Hoeffkes, Bernd Meinigke | 2003-10-21 |
| 6630003 | Colouring agents with enzymes | Andrea Saettler, Albrecht Weiss, Astrid Kleen | 2003-10-07 |