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:
Mar. 08, 1994
Filed:
May. 21, 1992
Applicant:
Inventors:
Toshihisa Kato, Kawasaki, JP;
Shinichi Kishimoto, Kawasaki, JP;
Hideo Takeda, Kawasaki, JP;
Mikiya Kano, Kawasaki, JP;
Tadashi Takemoto, Kawasaki, JP;
Assignee:
Ajinomoto Co., Inc., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560 40 ; 560 41 ; 562450 ;
Abstract
A method of preparing .varies.-L-aspartyl-L-phenylalanine methyl ester hydrochloride (.varies.-APM.HCL) from a reaction mixture of N-formyl-L-aspartic acid anhydride and L-phenylalanine methyl ester (PM), wherein .alpha.-APM.HCl is produced without isolating an intermediate by solid-liquid separation during the course of the reaction process.