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:
Sep. 11, 1984
Filed:
Apr. 28, 1981
Applicant:
Inventors:
Alec D Keith, State College, PA (US);
Wallace Snipes, State College, PA (US);
Assignee:
Key Pharmaceuticals, Inc., Miami, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61L / ; A61F / ; A61K / ; A61K / ;
U.S. Cl.
CPC ...
424 28 ; 424 14 ; 424 16 ; 424 19 ; 424 22 ; 424 78 ; 424 80 ;
Abstract
A polymeric diffusion matrix is provided comprising from about 2 to about 60% glycerol, from about 2 to about 15% polyvinylalcohol, from about 2 to about 10% water soluble polymer with hydration sites which in combination with the remaining ingredients yields a matrix capable of sustained release of a drug dispersed therein, and the balance water, the percentages being by weight.