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:
Jun. 17, 1986
Filed:
Feb. 23, 1984
Applicant:
Inventor:
Tomoyuki Tajima, Ichikawa, JP;
Assignees:
Koken Ltd., Tokyo, JP;
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12P / ;
U.S. Cl.
CPC ...
435 41 ; 435 68 ; 435240 ;
Abstract
The present invention relates to a process for preparing an inhibiting agent against the proliferation of malignant tumor cells of animals including human beings by cultivating animal malignant tumor cells, removing said malignant tumor cells from the culture medium and successively isolating a fraction having a molecular weight not less than 500 by fractional filtration.