Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6672143 | Process for determining the degeneration level of keratinic fibers | Erik Schulze zur Wiesche, Detlef Hollenberg | 2004-01-06 |
| 6569414 | Hair conditioners for treating split ends | Ullrich Bernecker, Detlef Hollenberg | 2003-05-27 |