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. 09, 1997
Filed:
Mar. 01, 1995
Applicant:
Inventors:
Guohua Zhang, Parsippany, NJ (US);
Prasad Pinnamaraju, Edison, NJ (US);
Assignee:
Hallmark Pharmaceuticals, Inc., Somerset, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
424468 ; 424469 ; 424486 ; 424487 ; 424488 ; 5147723 ; 514779 ; 514781 ; 514960 ; 514961 ;
Abstract
Verapamil depot drug formulations include the pharmaceutical itself and a three component release rate controlling matrix composition. The three components of the matrix composition are (1) an alginate component, such as sodium alginate, (2) an enteric polymer component, such as methacrylic acid copolymer, and (3) a pH independent gelling polymer, such as hydroxypropyl methylcellulose or polyethyleneoxide. The drug release rate can be adjusted by changing the amount of one or more of these components of the composition.