Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685881 | Aromatic allylaminonitro compounds, hair dye compositions containing aromatic allylaminonitio compounds, and synthetic and natural fiber dyeing process | David Rose, Edgar Lieske, Iduna Matzik | 1997-11-11 |
| 5651793 | Hydrogen peroxide preparations containing foam regulators | Winifried Neuhaus, Karin Nelles | 1997-07-29 |
| 5616150 | Isatin-containing formulations for coloring keratin-containing fibers | Hinrich Moeller | 1997-04-01 |
| 5611817 | Isatin derivatives for coloring keratin-containing fibers | Hinrich Moeller | 1997-03-18 |
| 5609650 | Dyeing of keratin fibres with indolines using metal salts as catalysts | Georg Knuebel, Winifried Neuhaus, Edgar Lieske | 1997-03-11 |