Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790240 | Solid colorant for keratin fibers | Erik Schulze zur Wiesche, Detlef Hollenberg, Michael Dreja | 2004-09-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6790240 | Solid colorant for keratin fibers | Erik Schulze zur Wiesche, Detlef Hollenberg, Michael Dreja | 2004-09-14 |