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. 19, 1990
Filed:
Jan. 24, 1989
Applicant:
Inventors:
Kazuaki Kitano, Sakai, JP;
Shigeru Fujimoto, Ikeda, JP;
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P / ; C12P / ; C12N / ; C12N / ; C07K / ; C07K / ;
U.S. Cl.
CPC ...
435 6952 ; 435244 ; 43525233 ; 4352536 ; 530351 ; 935 61 ; 935 66 ; 935 73 ;
Abstract
The present invention provides an improvement in a method for producing interleukin-2 by cultivating a transformant of Escherichia coli capable of producing interleukin-2 into a medium, which comprises inoculating said Escherichia coli into the medium of pH from about 4.8 to 6.0 and growing it while maintaining this pH range. By the method of the present invention, the interleukin-2 productivity is considerably improved.