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:
Oct. 28, 1980
Filed:
May. 09, 1979
Masayuki Nishida, Osaka, JP;
Satoshi Funakoshi, Katano, JP;
Katsuhiro Ogasa, Yokohama, JP;
Morio Kuboyama, Tokyo, JP;
Nobuya Yanai, Tokyo, JP;
Muneo Yamada, Kodaira, JP;
Morinaga Milk Industry Co. Ltd., Tokyo, JP;
The Green Cross Corporation, Osaka, JP;
Abstract
A colony-stimulating factor having definite physical and chemical properties and a function of stimulating activity on human bone marrow cells to proliferate and differentiate, thereby forming granulocyte colonies, is obtained from human urine by concentrating the urine with respect to proteins contained therein by adsorption chromatography with silica gel, salting out with ammonium sulfate and other means, then removing impurities by adsorption on cation exchanger, and further purifying by ion exchanging chromatography on anion exchanger, gel filtrating chromatography with highly crosslinked gels, affinity chromatography with sugar affinitive adsorbents and electrophoresis. This substance is stable in the presence of a stabilizer such as albumin or urinary proteins, against heat-treatment of virus-inactivation and can be used as a leukopenia curative which is precluded from fear of virus-infection.