Patents by Inventor Chizu Abe

Chizu Abe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • .alpha.-Ketoglutarate dehydrogenase gene
    Patent number: 5977331
    Abstract: Disclosed are coryneform L-glutamic acid-producing bacteria deficient in .alpha.-ketoglutarate dehydrogenase, a method of producing L-glutamic acid by using the bacteria, a gene coding for an enzyme having .alpha.-KGDH activity originating from coryneform L-glutamic acid-producing bacteria, recombinant DNA containing the gene, coryneform bacteria harboring the recombinant DNA, and a method of producing L-lysine by using bacteria harboring the recombinant DNA and having L-lysine productivity.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: November 2, 1999
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yoko Asakura, Yoshihiro Usuda, Nobuharu Tsujimoto, Eiichiro Kimura, Chizu Abe, Yoshio Kawahara, Tsuyoshi Nakamatsu, Osamu Kurahashi
  • Gene derived from coryneform bacteria and use thereof
    Patent number: 5929221
    Abstract: The L-lysine productivity of an L-lysine producing Coryneform bacterium is enhanced by amplifying a novel gene derived from a Coryneform bacterium and participating in L-glutamic acid production, while the L-glutamic acid productivity of an L-glutamic acid-producing Coryneform bacterium is enhanced by suppressing the function of the gene.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: July 27, 1999
    Assignee: Ajinomoto Co., Inc.
    Inventors: Eiichiro Kimura, Chizu Abe, Yoshio Kawahara, Yasuhiko Yoshihara, Tsuyoshi Nakamatsu