Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5273550 | Process and kit for dyeing hair | Giuseppe Prota, Leszek J. Wolfram | 1993-12-28 |
| 5100436 | Oxidative hair dyeing process with catalytic pretreatment | — | 1992-03-31 |
| 5034014 | Hair dye composition and method | — | 1991-07-23 |