Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11033472 | Hair-care agent and method for oxidative hair dying or bleaching with selected dicarboxylic acids | Hartmut Manneck, Astrid Kleen-Fehres | 2021-06-15 |
| 10987291 | Gentle agents and methods for oxidative dyeing using selected dicarboxylic acids | Hartmut Manneck, Astrid Kleen-Fehres | 2021-04-27 |