Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5782933 | Ascorbic and isoascorbic acids to remove or adjust oxidative color in hair | Gabriela Wis-Surel, Irina Tsivkin | 1998-07-21 |
| 5474578 | Erasable hair dyeing process | Alexander Chan, Jia-Shen Wang, Gottfried Wenke, Mu-Ill Lim | 1995-12-12 |
| 5032138 | Chlorites as oxidants in hair coloring | Leszek J. Wolfram, Thomas M. Schultz, Keith C. Brown | 1991-07-16 |