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:
Jul. 01, 1980
Filed:
May. 23, 1978
Applicant:
Inventors:
Assignee:
Nippon Oil Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12D / ;
U.S. Cl.
CPC ...
435 42 ; 435 86 ; 435830 ; 435822 ;
Abstract
A process for fermentatively producing vitamin B.sub.12, which comprises cultivating a vitamin B.sub.12 -producing microorganism belonging to at least one of the genus Arthrobacter and the genus Propionibacterium in the presence of a pre-cultivation product of a vitamin B.sub.12 -producing microorganism belonging to at least the other genus, and separating vitamin B.sub.12 from the culture broth.