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:
Jul. 14, 2009
Filed:
May. 17, 2007
Maxime DE Boni, Paris, FR;
Alain Lagrange, Coupvray, FR;
Maxime De Boni, Paris, FR;
Alain Lagrange, Coupvray, FR;
L'Oreal S.A., Paris, FR;
Abstract
A subject-matter of the present invention is the use, in the direct dyeing of keratinous fibers, of at least one direct dye and of a specific cationic hydrotropic agent of formula: in which X represents CH or NRwith Rrepresenting a C-Calkyl, Rrepresents either a hydrogen or a C-Calkyl, if X represents NR, or (CH)NRRRwith R, Rand R, which are identical or different, representing a C-Calkyl and n representing an integer between 0 and 12, if X represents CH; Rrepresents a C-Calkyl; p has a value 0 or 1; the electrical neutrality of the compound being provided by a cosmetically acceptable anion or a mixture of cosmetically acceptable anions. The invention likewise relates to a dyeing composition comprising at least one dye and such a cationic hydrotrope and to colouring processes employing this dyeing composition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile