Use of cationic azacyanine dyes for coloring keratin fibers
US7410507B2 · kind B2 · utility
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1References
4Claims
0Family size
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Key dates
| Filing date | Jan 25, 2006 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | May 13, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B55/009
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to the use of cationic azacyanine dyes of the formula (Ia) or (Ib) for coloring keratin fibers, and to a method of coloring hair with various degrees of damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.