Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4322212 | Oxidation hair dyes comprising substituted benzotriazoles | Edgar Lieske | 1982-03-30 |
| 4314809 | Novel coupler components for oxidation hair dyes, the manufacture thereof, and hair colorants | David Rose, Peter Busch, Edgar Lieske | 1982-02-09 |