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:
Oct. 15, 2002
Filed:
Mar. 21, 2001
Applicant:
Inventors:
Antonio Moroni, Morris Plains, NJ (US);
William Drefko, Kearny, NJ (US);
Assignee:
ISP Investments Inc., Wilmington, DE (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 9/14 ; A61K 9/20 ; A61K 9/48 ; A61K 9/66 ;
U.S. Cl.
CPC ...
A61K 9/14 ; A61K 9/20 ; A61K 9/48 ; A61K 9/66 ;
Abstract
A pH-dependent sustained release, drug delivery composition capable of being formed into tablets or pellets, wherein the release is controlled by a diffusion barrier formed by the interaction of a pH-dependent gelling material and a pH-independent non-gelling material, comprising a polymer matrix comprising, by weight, (a) 10 to 50% sodium alginate, (b) 2 to 15% propylene glycol alginate and (c) 40 to 80% of a pharmaceutical medicament.