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:
Apr. 10, 2001
Filed:
Feb. 12, 1999
Applicant:
Inventors:
Masaharu Mukouyama, Ibaraki, JP;
Satomi Komatsuzaki, Ibaraki, JP;
Assignee:
Nippon Shokubai Co., Ltd., , JP;
Primary Examiner:
Int. Cl.
CPC ...
C12P 1/320 ;
U.S. Cl.
CPC ...
C12P 1/320 ;
Abstract
This invention relates to a method for producing L-aspartic acid, comprising the steps of: immobilizing microbial cells containing aspartase to produce an immobilized aspartase; feeding an ammonium fumarate solution into a reactor filled with the immobilized aspartase; and recovering the produced L-aspartic acid from the reaction mixture, wherein the immobilized aspartase has an activity of 250 U or more, and wherein the ammonium fumarate solution is fed into the reactor at the feed rate LHSV of 2 to 35.