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. 12, 2023
Filed:
Jul. 29, 2021
Applicant:
Samyang Holdings Corporation, Seoul, KR;
Inventors:
Sang Yeob Park, Daejeon, KR;
Jong Won Yoon, Daejeon, KR;
Assignee:
SAMYANG HOLDINGS CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/00 (2006.01); A61K 47/32 (2006.01); A61K 47/36 (2006.01); A61K 47/42 (2017.01); A61K 9/16 (2006.01); A61K 47/10 (2017.01); B82Y 5/00 (2011.01);
U.S. Cl.
CPC ...
A61K 9/006 (2013.01); A61K 9/0065 (2013.01); A61K 9/1635 (2013.01); A61K 9/1652 (2013.01); A61K 47/10 (2013.01); A61K 47/32 (2013.01); A61K 47/36 (2013.01); A61K 47/42 (2013.01); B82Y 5/00 (2013.01);
Abstract
Disclosed is a mucoadhesive pharmaceutical composition comprising a poly-ionic complex of chitosan and a polyacrylic acid polymer. As an oral formulation, the composition has the extended retention time in the gastrointestinal tract by its mucoadhesive and swelling properties, which is useful as sustained release formulations, retentive formulations of active ingredients with limited absorption regions, and active ingredients with pH dependent solubility.