Issued Patents 1994
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374288 | Oxidative hair dyeing method, composition, and kit utilizing hydroxyl substituted benzothiazines | Guiseppe Prota | 1994-12-20 |
| 5368610 | Use of metal salts and chelates together with chlorites as oxidants in hair coloring | Alexander Chan, Ciuseppe Prota | 1994-11-29 |
| 5316551 | Oxidative hair dyeing process with catalytic pretreatment | — | 1994-05-31 |
| 5279617 | Process and kit for dyeing hair | Giuseppe Prota, Leszek J. Wolfram | 1994-01-18 |
| 5279618 | Process and kit for dyeing hair | Giuseppe Prota, Leszek J. Wolfram | 1994-01-18 |