Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9770397 | Oxidative dyeing composition | Manuella Jourdan, Sandra Schmelz, Martin Uellner | 2017-09-26 |
| 9445978 | Aqueous oxidizing composition | Sandra Schmelz, Martin Uellner | 2016-09-20 |
| 8608809 | Stable oxidative colouring composition for keratin fibres | Sandra Schmelz | 2013-12-17 |