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. 27, 2010
Filed:
Aug. 27, 2003
Applicants:
Jong-soo Woo, Suwon-si, KR;
Moon-hyuk Chi, Suwon-si, KR;
Inventors:
Jong-Soo Woo, Suwon-si, KR;
Moon-Hyuk Chi, Suwon-si, KR;
Assignee:
Hanmi Pharm. Co., Ltd, Kyungki-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 31/4422 (2006.01); A61K 31/351 (2006.01); A61K 9/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sustained-release composition for oral administration of a drug, comprising the drug, a mixture of sodium alginate and xanthan gum as a carrier for sustained release and a mixture of hydroxypropyl methylcellulose and propylene glycol alginate as a gel hydration accelerator, which is capable of maintaining a constant drug level in blood for 24 hours or more. Due to rapid gel hydration without forming a non-gelated core, the drug release rate follows zero order kinetics and does not significantly vary with the degree of gastrointestinal motility.