Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6878170 | 5,6-Dihydroxyindolines as additives for hair dyeing preparations | Iduna Matzik, Detlef Hollenberg | 2005-04-12 |
| 6569211 | 5,6-dihydroxyindolines as additives for hair dyeing preparations | Iduna Matzik, Detlef Hollenberg | 2003-05-27 |