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:
Mar. 31, 1992
Filed:
Aug. 08, 1990
Applicant:
Inventors:
Jean-Louis Gueret, Paris, FR;
Francoise Lebreton, Bures-sur-Yvette, FR;
Jean-Claude Contamin, Morangis, FR;
Assignee:
L'Oreal, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
424449 ; 424443 ; 424448 ;
Abstract
The composite film according to the invention consists of an occlusive layer, and a reservoir layer consisting of a silicone polymer matrix containing a cosmetically and/or pharmaceutically active gelled aqueous phase in the form of dispersed inclusions, the whole being coupled with a removable protection. The matrix comprises a web on the side opposite the occlusive layer. This film can be applied to the skin to cause cosmetically or pharmaceutically active substances to enter via transcutaneous effects. The invention also relates to processes for the preparation of these films.