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:
Nov. 13, 1984
Filed:
Mar. 28, 1983
Applicant:
Inventor:
Alec D Keith, Miami, FL (US);
Assignee:
Key Pharmaceuticals, Inc., Miami, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61L / ; A61K / ; A61F / ;
U.S. Cl.
CPC ...
421 28 ; 424 78 ;
Abstract
A self-supporting polymeric diffusion matrix provides for the sustained release of propranolol in order to deliver said propranolol to a patient. The matrix comprises from about 1 to about 60% by weight of a polar plasticizer, from about 5 to about 20% by weight polyvinylalcohol having a molecular weight from about 50,000 to about 150,000, from about 10 to about 25% by weight polyvinylalcohol having a molecular weight from about 4,000 to about 15,000, from about 2 to about 30% by weight polyvinylpyrrolidone, and a pharmaceutically effective amount of the propanolol to provide a sustained release of said propranolol over a prolonged period.