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:
Dec. 22, 1998
Filed:
Dec. 29, 1995
Applicant:
Inventors:
Michael Froix, Mountain View, CA (US);
Masha Pukshansky, San Francisco, CA (US);
Sergio Nacht, Redwood City, CA (US);
Assignee:
Advanced Polymer Systems, Inc., Redwood City, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ;
U.S. Cl.
CPC ...
424401 ; 424 7802 ; 424 7803 ; 514844 ; 514938 ;
Abstract
Retinoids for topical skin application are formulated as impregnants in porous microspheres. Thus formulated, the retinoids display a surprisingly high level of stability and low degree of skin irritation.