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:
Jul. 28, 2020
Filed:
Nov. 28, 2014
Cj Healthcare Corporation, Seoul, KR;
Yoon Jung Lee, Yongin-si, KR;
Kyung Hwa Kim, Busan, KR;
Yoo Hee Yang, Yongin-si, KR;
Jung Min Yoo, Seoul, KR;
Se Jun Kim, Gwacheon-si, KR;
Ji Hyun Moon, Seoul, KR;
Hoo Keun Oh, Suwon-si, KR;
Dong Eok Lee, Seoul, KR;
Won Jeong Lee, Seoul, KR;
Jung Rok Lee, Busan, KR;
Chung Min Lee, Yongin-si, KR;
Eun Young Choi, Seoul, KR;
Gyong Sik Ha, Suwon-si, KR;
CJ Healthcare Corporation, Seoul, KR;
Abstract
The present invention relates to a method for purifying darbepoetin alfa by selectively separating only a structural isoform having a high content of sialic acid from a mixture of structural isoforms of darbepoetin alfa having various contents of sialic acid. Since the method of the present invention is a novel method for purifying darbepoetin alfa which can be conveniently and simply produced, it is possible to remarkably increase productivity due to process efficiency improvement, as well as to yield high purity darbepoetin alfa when mass-producing darbepoetin alfa according to the present invention.