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. 02, 1996
Filed:
Oct. 27, 1994
Applicant:
Inventors:
Tadashi Takemoto, Kawasaki, JP;
Takehiko Kataoka, Kawasaki, JP;
Assignee:
Ajinomoto Co., Inc., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562443 ;
Abstract
An industrial process for recovering L-phenylalanine in high yield from a side stream obtained from .alpha.-APM is disclosed. L-aspartic acid or an aqueous solution thereof is added to such a side stream when hydrolysis of the side stream is performed under acidic conditions with a mineral acid, the pH of the reaction mixture obtained by hydrolysis is then adjusted to 5 to 6 to precipitate L-phenylalanine.