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. 18, 1988
Filed:
Mar. 12, 1986
Applicant:
Inventors:
Chiaki Sano, Tokyo, JP;
Yoshimi Nagano, Kawasaki, JP;
Kiyoshi Tanaka, Tokyo, JP;
Shigeho Ikeda, Yokohama, JP;
Masayoshi Naruse, Yokohama, JP;
Assignee:
Ajinomoto Co., Inc., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; A61K / ;
U.S. Cl.
CPC ...
514419 ; 548497 ; 426-2 ;
Abstract
A feed additive produced by concentrating an aqueous solution containing tryptophan and impurities both originating in the culture broth of a tryptophan-producing microorganism, with the pH of the aqueous solution being maintained in the range of 4 to 6 and the temperature thereof being maintained in the range of 20.degree. to 80.degree. C. during the process of concentrating.