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:
Apr. 02, 2002
Filed:
Jan. 17, 2001
Applicant:
Inventors:
Srinivasan Venkateshwaran, Salt Lake City, UT (US);
David Fikstad, Salt Lake City, UT (US);
Charles D. Ebert, Salt Lake City, UT (US);
Assignee:
Watson Pharmaceuticals, Inc., Corona, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/70 ;
U.S. Cl.
CPC ...
A61K 9/70 ;
Abstract
A method of making a pressure sensitive matrix patch for transdermal delivery of a drug is disclosed. The method includes the steps of dissolving a hydrophilic salt form of the drug in the water phase of an aqueous dispersion of a hydrophobic pressure sensitive adhesive, casting the resulting mixture as a thin film, and evaporating the water. The physical stability of the drug in the film is excellent, and crystallization of the drug is inhibited. A method of increasing the transdermal flux of an acidic drug is also disclosed.