Method of coloring hair using cationic dyes
US6843256B2 · kind B2 · utility
6Cited by
1References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2001 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Nov 8, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The cationic dyes of formula (1) specified in claim 1 are suitable especially for coloring keratin-containing fibers, more especially for coloring hair.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.