Issued Patents 2004
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828443 | Dyes and colorants | Horst Hoeffkes, Frank Naumann, David Rose, Leszek J. Wolfram, Joachim-Kurt Foitzik | 2004-12-07 |
| 6797012 | Solid colorant for keratin fibers | Erik Schulze zur Wiesche, Michael Dreja | 2004-09-28 |
| 6790240 | Solid colorant for keratin fibers | Erik Schulze zur Wiesche, Britta Bossmann, Michael Dreja | 2004-09-14 |
| 6736862 | Indole/indoline based hybrid dyes and indole/indoline based hybrid dye intermediate products | Frank Naumann, Horst Hoeffkes, David Rose | 2004-05-18 |
| 6688314 | Application device for highlighting hair | Horst Hoeffkes, Hans Schneider, Peter Solich | 2004-02-10 |
| 6672143 | Process for determining the degeneration level of keratinic fibers | Erik Schulze zur Wiesche, Claudia Brockmann | 2004-01-06 |
| 6673123 | Solid colorant for keratin fibers | Erik Schulze zur Wiesche, Michael Dreja | 2004-01-06 |