Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9770397 | Oxidative dyeing composition | Jürgen Ehmig, Manuella Jourdan, Sandra Schmelz | 2017-09-26 |
| 9445978 | Aqueous oxidizing composition | Jürgen Ehmig, Sandra Schmelz | 2016-09-20 |
| 9326585 | Hair coloring process | — | 2016-05-03 |
| 8668746 | Two-part hair colouring composition | Alexander Meuser, Sandra Schmelz, Diana Bauer | 2014-03-11 |
| 8636813 | Hair colouring composition | Alexandra Meuser, Sandra Schmelz, Diana Bauer | 2014-01-28 |
| 8388699 | Method for levelling hair colour | Jonathan Wood, Mustafa Grit | 2013-03-05 |
| 8388701 | Composition and method for colouring hair | Mustafa Grit | 2013-03-05 |
| 8388700 | Composition and method for colouring hair | Sandra Schmelz, Fariba Ghiasi | 2013-03-05 |
| 8382855 | Composition and method for colouring hair | Dominik Pratt | 2013-02-26 |
| 8372160 | Method for levelling hair colour | Jonathan Wood, Mustafa Grit | 2013-02-12 |
| 8349025 | Process for oxidative colouring keratin fibres | Jonathan Wood, Alexandra Hullmann, Sandra Schmelz | 2013-01-08 |
| 8337570 | Process for oxidative colouring keratin fibres | Alexandra Hullmann, Frank Kufner, Sabine Schäfer, Bernd Nöcker | 2012-12-25 |