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:
Jun. 25, 2019
Filed:
Dec. 10, 2015
L'oreal, Paris, FR;
Andrew Greaves, Magny-le-Hongre, FR;
L'OREAL, Paris, FR;
Abstract
The invention relates to a cosmetic process for caring for the skin, more particularly facial skin, in particular wrinkled skin, comprising the topical application to the skin of a cosmetic composition comprising a grafted polysaccharide polymer (I) and exposure of the treated skin to light radiation, polymer (I) being of formula:PS—(CO—NH-L-X)(COOH)in which PS denotes the basic backbone of the polysaccharide bearing the carboxylic acid groups;L is a divalent hydrocarbon-based group containing from 1 to 20 carbon atoms;X denotes a photoactive group of azide or diazirine type;a denotes the content of COOH groups substituted with the group —NH-L-X;b denotes the content of unsubstituted free COOH groups;a being between 0.01 and 0.8; b being between 0.2 and 0.99;a+b=1 The invention also relates to the polymers (I) bearing a photoactive group X of diazirine type and to a composition comprising such a polymer in a physiologically acceptable medium.