Issued Patents 2004
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835210 | Electrochemical method and system for dyeing hair | Padmaja Prem, Katherine Jacobs-Dube | 2004-12-28 |
| 6821302 | Permanent coloring of hair using carbonate salts and bicarbonate salts and using percarbamic acid precursors | Van Au, Stephen A. Madison | 2004-11-23 |
| 6758866 | Enhanced color deposition for hair with sequestering agents | Jiang Yang, Gabriela Wis-Surel, Alexander Chan | 2004-07-06 |
| 6743264 | Two step permanent coloring of hair | Padmaja Sarojini, Alexander Chan | 2004-06-01 |
| 6695888 | Transition metal complexes as dye forming catalysts in hair coloring compositions | Van Au, Stephen A. Madison | 2004-02-24 |