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. 13, 2009
Filed:
Nov. 03, 2004
Applicants:
Zhibing HU, Denton, TX (US);
Xiaohu Xia, Denton, TX (US);
Liping Tang, Arlington, TX (US);
Inventors:
Assignee:
University of North Texas, Denton, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 31/728 (2006.01); C08B 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for synthesizing uniformly sized hyaluronic acid ('HA') particles that are substantially free from oil and surfactant contaminants. The method comprises crosslinking HA chains with 1-ethyl-3-(3-dimethlyaminopropyl) carbodiimide hydrochloride ('EDAC') and adipic acid dihydrazide in a water/acetone mixture.