Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6828443 | Dyes and colorants | Detlef Hollenberg, Horst Hoeffkes, David Rose, Leszek J. Wolfram, Joachim-Kurt Foitzik | 2004-12-07 |
| 6814761 | Direct hair colorants | David Rose, Bernd Meinigke, Horst Hoeffkes | 2004-11-09 |
| 6787128 | Structure-improving hair care agents | Astrid Kleen, Horst Hoeffkes, Oliver Brabaender | 2004-09-07 |
| 6736862 | Indole/indoline based hybrid dyes and indole/indoline based hybrid dye intermediate products | Detlef Hollenberg, Horst Hoeffkes, David Rose | 2004-05-18 |