Coloring hair with aminoalkyl-or aminohydroxyalkyl-catechols
US4904274A · kind A · utility
16Cited by
0References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1988 |
| Grant date | Feb 27, 1990 |
| Priority date | — |
| Expiry date | May 12, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A process for coloring hair in which a functional metal ion and aminoalkyl or aminohydroxyalkyl catechols are used in combination or applied sequentially to dye the hair rapidly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.