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. 03, 2019
Filed:
Oct. 20, 2017
Applicant:
Industrial Technology Research Institute, Chutung, Hsinchu, TW;
Inventors:
Wen-Hsuan Chiang, Toufen, TW;
Yu-Wen Lo, New Taipei, TW;
Felice Cheng, Zhubei, TW;
Maggie Lu, Zhudong Township, Hsinchu County, TW;
Ya-Ling Chiu, Hsinchu, TW;
Assignee:
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/06 (2006.01); A61K 47/10 (2017.01); A61K 47/34 (2017.01); A61K 31/704 (2006.01); A61K 38/38 (2006.01); A61K 38/17 (2006.01); C07K 16/32 (2006.01); A61K 39/395 (2006.01); A61K 38/26 (2006.01); A61K 33/30 (2006.01); A61K 47/42 (2017.01); A61K 39/00 (2006.01); A61K 9/00 (2006.01);
U.S. Cl.
CPC ...
A61K 9/06 (2013.01); A61K 31/704 (2013.01); A61K 33/30 (2013.01); A61K 38/1793 (2013.01); A61K 38/26 (2013.01); A61K 38/385 (2013.01); A61K 39/39541 (2013.01); A61K 39/39558 (2013.01); A61K 47/10 (2013.01); A61K 47/34 (2013.01); A61K 47/42 (2013.01); C07K 16/32 (2013.01); A61K 9/0019 (2013.01); A61K 9/0024 (2013.01); A61K 2039/505 (2013.01); C07K 2317/24 (2013.01); C07K 2317/94 (2013.01);
Abstract
A hydrogel composition is provided. The hydrogel composition includes polyglutamic acid (PGA) containing maleimide groups, and polyethylene glycol (PEG) containing terminal thiol groups, wherein the hydrogel composition has a pH value ranging from 4.0 to 6.5. A drug delivery system is also provided. The drug delivery system includes the above-mentioned hydrogel composition, and a pharmaceutically active ingredient encapsulated in the hydrogel composition.