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:
Sep. 10, 1991
Filed:
Oct. 11, 1989
Applicant:
Inventors:
James L Cone, Germantown, MD (US);
Joseph E DeLarco, Chesterfield, MO (US);
Assignee:
Ostuka Pharmaceutical Co. Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07K / ; C07K / ; C07K / ;
U.S. Cl.
CPC ...
530399 ; 530412 ; 530415 ; 530416 ; 530424 ;
Abstract
The present invention relates to improved methods for purifying TGF-beta so as to obtain such in high yields. The process steps consist of acid-ethanol extracting platelets, cation exchange separation, and hydrophobic separation.