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. 14, 2007
Filed:
Jul. 03, 2002
Applicant:
Thomas Hermann, Bielefeld, DE;
Inventor:
Thomas Hermann, Bielefeld, DE;
Assignee:
Degussa AG, Düsseldorf, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C12P 13/08 (2006.01); C12N 1/21 (2006.01); C12N 15/00 (2006.01); C12N 15/70 (2006.01); C12Q 1/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for the preparation of L-amino acids, especially L-lysine, L-valine, L-homoserine and L-threonine, by fermenting a microorganism of the genuswhich has a mutation or deletion in the gene encoding aspartate ammonium lyase (aspA). This mutation results in the loss of aspA enzymatic activity in the microorganism