Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4911731 | Process and composition for dyeing hair utilizing an anionic polymeric/cationic polymer complex | Leszek J. Wolfram, Keith C. Brown | 1990-03-27 |
| 4559057 | Process and composition for coloring hair with pigments | Herman Bogaty, Keith C. Brown, Leszek J. Wolfram | 1985-12-17 |