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. 26, 2002
Filed:
May. 03, 2000
Applicant:
Inventors:
Yutaka Hirao, Osaka, JP;
Motonori Hashimoto, Osaka, JP;
Tae Kitamura, Osaka, JP;
Yahiro Uemura, Osaka, JP;
Assignee:
Welfide Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 3/9395 ;
U.S. Cl.
CPC ...
A61K 3/9395 ;
Abstract
A method for producing an immunoglobulin preparation for intravenous injection, which comprises the steps of: fractionating an immunoglobulin-containing solution with 4 to 10 w/v% of polyethylene glycol having a molecular weight of from 1,000 to 10,000, at a pH value of from 4.5 to 6.5, an ionic strength of from 0.0001 to 0.1 M and a temperature of from 0 to 4° C. to recover a supernatant fraction; and concentrating the supernatant fraction at a pH of from 3.5 to 5.0.