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:
May. 05, 2015
Filed:
Apr. 25, 2011
Applicants:
Zhiwen Zeng, Zhejiang, CN;
Peng Wang, Zhejiang, CN;
Wenling Zhang, Zhejiang, CN;
Xini Zhang, Zhejiang, CN;
Inventors:
Zhiwen Zeng, Zhejiang, CN;
Peng Wang, Zhejiang, CN;
Wenling Zhang, Zhejiang, CN;
Xini Zhang, Zhejiang, CN;
Assignee:
Zhejiang Huahai Pharmaceutical Co., Ltd, Zhejiang, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J 43/00 (2006.01);
U.S. Cl.
CPC ...
C07J 43/003 (2013.01); C07J 43/00 (2013.01);
Abstract
Provided is a method for purifying rocuronium bromide, which comprises: formulating crude rocuronium bromide to be purified into an aqueous solution, distilling off excess residue solvents at reduced pressure, absorbing by adding active carbon or silica gel, then filtrating, quick freezing the filtrate into ice, and then lyophilizing to obtain rocuronium bromide.