Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790239 | Agent for coloring keratin containing fibers | Doris Oberkobusch, Horst Hoeffkes | 2004-09-14 |
| 6770102 | Agent for dying keratin fibers | Doris Oberkobusch, Horst Hoeffkes | 2004-08-03 |
| 6755872 | Dyeing agent for keratinous fibers | Doris Oberkobusch, Horst Hoeffkes | 2004-06-29 |