Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5718731 | Oxidation hair dye composition based on 4,5-diaminopyrazole and m-phenylenediamine derivatives | Alexa Weinges, Wolfgang Balzer, Stefan Gerstung | 1998-02-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5718731 | Oxidation hair dye composition based on 4,5-diaminopyrazole and m-phenylenediamine derivatives | Alexa Weinges, Wolfgang Balzer, Stefan Gerstung | 1998-02-17 |