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. 06, 1990
Filed:
Feb. 16, 1988
Applicant:
Inventor:
Benjamin K Kim, Toms River, NJ (US);
Assignee:
Paco Pharmaceutical Services, Lakewood, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
424449 ; 424448 ; 424487 ;
Abstract
The present invention is directed to a transdermal delivery system for an active substance. The active substance is estrogen or its derivatives and preferably is 17-beta-estradiol. The system comprises an impermeable backing layer and a matrix affixed thereto. The matrix comprises, on a weight percentage basis, from about 60 to about 95% of an adhesive polymer, from about 5 to about 20% of a solvent, from about 0.2 to about 4% of a skin penetration enhancer, and from about 0.5 to about 5% of the active substance. The system is free of any discrete permeable, polymeric, diffusion-controlling membrane.