Patent · US Active

Oxidation dye precursors

US8821592B1 · kind B1 · utility

1Cited by

1References

14Claims

0Family size

Assignee

Henkel AG & Co. KGaA · DE

Inventors

Wibke Gross · Mülheim an der Ruhr, DE
Ralph Nemitz · Frechen, DE
Astrid Kroos · Monheim, DE

Key dates

Filing date	May 29, 2012
Grant date	Sep 2, 2014
Priority date	—
Expiry date	May 29, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D295/13
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

An agent for the oxidative dyeing of keratinous fibers is provided. The agent contains, as a developer-type oxidation dye precursor, a compound of Formula (I) that carries at least one cationic charge in Y.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.