Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7534272 | Agent for oxidative treatment, particularly in transparent gel form | Thorsten Cassier | 2009-05-19 |
| 6623727 | Solid, form-stable gels for hair treatment | Susanne Birkel, Juergen Allwohn, Sabine Baecker, Thomas Krause, Angeliky Beyer | 2003-09-23 |
| 6589510 | Volume-imparting hair treatment product for strengthening the hair shaft | Axel Kalbfleisch, Susanne Birkel | 2003-07-08 |
| 6475475 | Polymer ingredient combinations for hair treatment compositions | Susanne Birkel | 2002-11-05 |
| 6383477 | Volume-imparting hair treatment compositions | Susanne Birkel, Michael Franzke, Hildegard Henze | 2002-05-07 |