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:
Aug. 09, 1983
Filed:
Mar. 03, 1982
Kenji Takezawa, Yokohama, JP;
Hajima Hiratani, Osaka, JP;
Ajinomoto Co., Inc., Tokyo, JP;
Japan Chemical Research Co., Ltd., Kobe, JP;
Abstract
The invention provides a novel erythropoietin product prepared from the urine of healthy human but exhibiting no inhibitory effect against erythropoiesis as is the most disadvantageous problem in the product prepared from the urine of healthy human. The method for the preparation of such a product comprises adsorbing the crude erythropoietin product obtained from the urine of healthy human on to a weakly basic anion exchanger from a neutral or weakly acidic aqueous solution containing 0.1 to 0.2 mole per liter of an inorganic neutral salt such as sodium chloride and then eluting the thus adsorbed ingredients with an aqueous eluant solution containing from 0.5 to 0.7 mole per liter of an inorganic neutral salt.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile