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:
Aug. 17, 2010
Filed:
Dec. 04, 2003
Applicants:
Chih-chang Chu, Ithaca, NY (US);
Xian-zheng Zhang, Wuhan, CN;
Da-qing Wu, Ithaca, NY (US);
Inventors:
Assignee:
Cornell Research Foundation, Inc., Ithaca, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 13/02 (2006.01); B01J 13/14 (2006.01); A61K 9/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
Injectable hydrogel microspheres are prepared by forming an emulsion where hydrogel precursors are in a disperse aqueous phase and polymerizing the hydrogel precursors. In a preferred case, the hydrogel precursors are poly(ethylene glycol) diacrylate and N-isopropylacrylamide and the continuous phase of the emulsion is an aqueous solution of dextran and a dextran solubility reducer. The microspheres will load protein, e.g., cytokines, from aqueous solution.