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:
Aug. 17, 1999
Filed:
Aug. 08, 1997
Applicant:
Inventors:
Koichi Sakano, Frankfurt am Main, DE;
Masaharu Mukouyama, Tsukuba-gun, JP;
Takaya Hayashi, Tsuchiura, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P / ;
U.S. Cl.
CPC ...
435145 ;
Abstract
A novel enzymatic, non-batch process for converting maleic acid to fumaric acid and/or producing L-aspartic acid, wherein dissolved oxygen concentration in the reaction medium in the reaction column or vessel is brought to 1 ppm (parts per million) or less with a deoxygenation agent and/or an inert gas, is provided.