Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835211 | Direct hair dyes and use thereof | David Rose, Horst Hoeffkes | 2004-12-28 |
| 6814761 | Direct hair colorants | Frank Naumann, David Rose, Horst Hoeffkes | 2004-11-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835211 | Direct hair dyes and use thereof | David Rose, Horst Hoeffkes | 2004-12-28 |
| 6814761 | Direct hair colorants | Frank Naumann, David Rose, Horst Hoeffkes | 2004-11-09 |