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:
Jan. 27, 1998
Filed:
Jun. 14, 1996
Etienne Soudant, Fresnes, FR;
Constantin Koulbanis, Le Kremlin Bicetre, FR;
L'Oreal, Paris, FR;
Abstract
The invention relates to a cosmetic or dermatological composition with controlled release of active principle containing at least photoconvertible carotenoid, capable of being converted to retinol and retinoic acid or its isomers, of following formula (I): ##STR1## in which the R.sub.1 and R.sub.2 substituents denote one of the following groups: ##STR2## at least one of the R.sub.1 and R.sub.2 substituents denoting a .beta.-ionone group of formula (II), the R.sub.3 and R.sub.4 substituents denoting hydrogen, a hydroxyl, carboxyl or C.sub.1 -C.sub.4 alkoxy group or forming, with the carbon atom of the ring, a carbonyl group, in a cosmetically or dermatologically acceptable medium.