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:
Oct. 30, 2007
Filed:
Dec. 15, 2005
Applicants:
Hervé David, la Varenne Saint Hilaire, FR;
Andrew Greaves, Montevrain, FR;
Nicolas Daubresse, la Celles St Cloud, FR;
Inventors:
Hervé David, la Varenne Saint Hilaire, FR;
Andrew Greaves, Montevrain, FR;
Nicolas Daubresse, la Celles St Cloud, FR;
Assignee:
L'Oreal S.A., Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
C09B 44/12 (2006.01); A61Q 5/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present disclosure relates to dissymmetrical cationic diazo compounds having at least one 4-pyridinium unit and a cationic or non-cationic linker. The disclosure further relates to dyeing compositions comprising these compounds as a direct dye in a medium appropriate for the dyeing of keratin fibers. Further, the disclosure relates to a method of coloring keratin fibers that employs this composition, and a device having a plurality of compartments.