Patents by Inventor Ranko Nishi

Ranko Nishi 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).

  • Method for producing an L-amino acid
    Patent number: 8058035
    Abstract: A microorganism which has an L-amino acid producing ability and has been modified so that succinate dehydrogenase activity and ?-ketoglutarate dehydrogenase activity are decreased is cultured in a medium to produce and accumulate an L-amino acid in the medium or cells of the microorganism, and the L-amino acid is collected from the medium or cells to produce the L-amino acid.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: November 15, 2011
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yoshihiko Hara, Hiroshi Izui, Jun Nakamura, Ranko Nishi
  • L-tyrosine producing bacterium and a method for producing L-tyrosine
    Patent number: 7709242
    Abstract: The present invention describes the production of L-tyrosine by culturing in a medium an Escherichia bacterium which has L-tyrosine-producing ability and which carries a mutant prephenate dehydrogenase which is desensitized to feedback inhibition by L-tyrosine, producing and accumulating L-tyrosine in the medium or in the bacterial cells, and collecting L-tyrosine from the medium or the bacterial cells.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: May 4, 2010
    Assignee: Ajinomoto Co., Inc.
    Inventors: Atsuko Takai, Ranko Nishi, Yuji Joe, Hisao Ito
  • METHOD FOR PRODUCING AN L-AMINO ACID
    Publication number: 20090286290
    Abstract: A microorganism which has an L-amino acid producing ability and has been modified so that succinate dehydrogenase activity and ?-ketoglutarate dehydrogenase activity are decreased is cultured in a medium to produce and accumulate an L-amino acid in the medium or cells of the microorganism, and the L-amino acid is collected from the medium or cells to produce the L-amino acid.
    Type: Application
    Filed: June 4, 2009
    Publication date: November 19, 2009
    Inventors: YOSHIHIKO HARA, HIROSHI IZUI, JUN NAKAMURA, RANKO NISHI
  • L-TYROSINE-PRODUCING BACTERIUM AND A METHOD FOR PRODUCING L-TYROSINE
    Publication number: 20090104683
    Abstract: The present invention describes the production of L-tyrosine by culturing in a medium an Escherichia bacterium which has L-tyrosine-producing ability and which carries a mutant prephenate dehydrogenase which is desensitized to feedback inhibition by L-tyrosine, producing and accumulating L-tyrosine in the medium or in the bacterial cells, and collecting L-tyrosine from the medium or the bacterial cells.
    Type: Application
    Filed: December 17, 2008
    Publication date: April 23, 2009
    Inventors: Atsuko Takai, Ranko Nishi, Yuji Joe, Hisao Ito
  • L-tyrosine-producing bacterium and a method for producing L-tyrosine
    Patent number: 7482140
    Abstract: The present invention describes the production of L-tyrosine by culturing in a medium an Escherichia bacterium which has L-tyrosine-producing ability and which carries a mutant prephenate dehydrogenase which is desensitized to feedback inhibition by L-tyrosine, producing and accumulating L-tyrosine in the medium or in the bacterial cells, and collecting L-tyrosine from the medium or the bacterial cells.
    Type: Grant
    Filed: June 10, 2005
    Date of Patent: January 27, 2009
    Assignee: Ajinomoto Co., Inc.
    Inventors: Atsuko Takai, Ranko Nishi, Yuji Joe, Hisao Ito
  • L-tyrosine-producing bacterium and a method for producing L-tyrosine
    Publication number: 20050277179
    Abstract: The present invention describes the production of L-tyrosine by culturing in a medium an Escherichia bacterium which has L-tyrosine-producing ability and which carries a mutant prephenate dehydrogenase which is desensitized to feedback inhibition by L-tyrosine, producing and accumulating L-tyrosine in the medium or in the bacterial cells, and collecting L-tyrosine from the medium or the bacterial cells.
    Type: Application
    Filed: June 10, 2005
    Publication date: December 15, 2005
    Inventors: Atsuko Takai, Ranko Nishi, Yuji Joe, Hisao Ito