Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4226852 | Two-component peroxide hair bleaching compositions | Holger Tesmann, Edgar Lieske | 1980-10-07 |
| 4213758 | Oxidation hair dyes based upon tetraaminopyrimidine developers and couplers therefor | David Rose, Edgar Lieske | 1980-07-22 |
| 4186186 | Guanidine accelerators for peroxide hair bleaching compositions | Holger Tesmann, Edgar Lieske | 1980-01-29 |
| RE30199 | Oxidation hair dyes based upon tetraaminopyrimidine developers | David Rose, Ferdi Saygin | 1980-01-29 |