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. 17, 1989
Filed:
Jul. 16, 1987
Applicant:
Inventors:
Assignee:
Kyowa Hakko Kogyo Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ; C12N / ; C12N / ; C12R / ;
U.S. Cl.
CPC ...
435108 ; 43525232 ; 435320 ; 435840 ; 435843 ; 935 60 ; 935 72 ;
Abstract
Disclosed is a process for producing tryptophan by transforming a host microorganism belonging to the genus Corynebacterium or Brevibacterium with a recombinant DNA of a DNA fragment containing a gene involved in the biosynthesis of tryptophan and a vector DNA, culturing the transformant in a nutrient medium, accumulating tryptophan in the culture medium and recovering tryptophan therefrom.