Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10512598 | Liquid hair dye with optimized dying performance and care | Stephan Schwartz | 2019-12-24 |
| 10143634 | Thickening developer for oxidation dyes | Stephan Schwartz | 2018-12-04 |
| 8882855 | Gel-based oxidation colorant including an emulsifier combination and thickener | Hartmut Manneck | 2014-11-11 |
| 8858652 | Conditioning dyeing agent for keratinous fibers | Stephan Schwartz | 2014-10-14 |