The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2008
Filed:
Jul. 30, 2004
Applicants:
Alain Lagrange, Coupvray, FR;
Frédéric Guerin, Paris, FR;
Sylvain Kravtchenko, Asnières, FR;
Inventors:
Assignee:
L'Oreal, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
A61K 7/13 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed herein is a composition for dyeing keratinous fibers, comprising at least one direct dye corresponding to the following formula (I): in which Rand Rmay be chosen from hydrogen atoms; Rmay be a phenyl group, n may chosen from 0 and 1; Rand Rmay be alkyl groups having 1 to 6 carbon atoms; Rmay be chosen from phenol groups and aniline groups; X and Y may represent nitrogen atoms, wherein the group —NRRmay occupy a position chosen from the 1-, 6-, 8-, and 9-position when n is equal to 1; and A is an anionic counterion. Further disclosed herein are methods for dyeing keratinous fibers using these direct dyes.