Semi-permanent hair dyeing system using soluble vat dyes
US6592632B2 · kind B2 · utility
4Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | May 29, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a semi-permanent dye system comprising at least one solubilized vat dye, an aqueous carrier, and substantially no chemical oxidant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.