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:
Aug. 12, 2008
Filed:
Oct. 14, 2005
Applicants:
Hervé David, La Varenne Saint Hilaire, FR;
Andrew Greaves, Montevrain, FR;
Leïla Hercouet, Neuilly-Plaisance, FR;
Alain Lagrange, Coupvray, FR;
Inventors:
Hervé David, La Varenne Saint Hilaire, FR;
Andrew Greaves, Montevrain, FR;
Leïla Hercouet, Neuilly-Plaisance, FR;
Alain Lagrange, Coupvray, FR;
Assignee:
L'Oreal S.A., Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
A61Q 5/10 (2006.01); C07D 211/02 (2006.01); C07D 233/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present disclosure relates to a novel family of dicationic bis-hydrazone compounds that may be used as direct dyes, and to a dye composition for dyeing keratin fibers, for example, human keratin fibers such as the hair, comprising, in a suitable dyeing medium, at least one such compound. Also disclosed are dyeing processes implementing this composition and uses thereof.