Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6719811 | Oxidation colorants for keratin fibers | Iduna Matzik, Edgar Lieske | 2004-04-13 |
| 4994087 | Compounds containing substituted phenylamino and pyridyl groups and hair dyeing preparations using them | Edgar Lieske | 1991-02-19 |
| 4828568 | Oxidation hair-dyeing preparations | Hinrich Moeller, Edgar Lieske | 1989-05-09 |