Hair treatment methods
US9320695B2 · kind B2 · utility
0Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 2013 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Mar 22, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/884
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of treating a material, the method comprising the steps of: (i) contacting the material with a coloring composition comprising a dye compound; and (ii) contacting the material with a composition comprising a quaternary ammonium salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.