Patent · US Expired

Hair dye composition

US7662193B2 · kind B2 · utility

5Cited by

0References

8Claims

0Family size

Assignees

KAO CORPORATION · JP
FUJIFILM Corporation · JP

Inventors

Kenichi Matsunaga · Darmstadt, DE
Hiromi Saimiya · Sumida, JP
Dominic Pratt · Darmstadt, DE
Yasuhiro Ishiwata · Minamiashigara, JP

Key dates

Filing date	Feb 3, 2006
Grant date	Feb 16, 2010
Priority date	—
Expiry date	Apr 17, 2026

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/4324
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Provided is a hair dye composition containing a dissociative direct dye (1):(wherein Ar represents an aromatic group or heterocyclic aromatic group which may have a substituent, Ar′ represents an aromatic group which may be substituted by an alkyl group or an electron drawing group, or a specific heterocyclic aromatic group, and W represents an electron drawing group); or salt thereof.

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