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:
Nov. 29, 2011
Filed:
Sep. 17, 2007
Applicant:
Xiaozheng Shu, Shanghai, CN;
Inventor:
Xiaozheng Shu, Shanghai, CN;
Assignee:
Bioregen Biomedical (Shanghai) Co., Ltd, Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 243/14 (2006.01); C07C 233/05 (2006.01); A61K 31/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
Disclosed are dihydrazide compounds having formula (I) or (II), wherein R-Rare alkylene, substituted alkylene, aryl or polyether radical. The preparation and uses for producing medical hydrogel and medicine controlled releasing carrier of said dihydrazide compounds are provided.