Patents by Inventor Atsuko Takai

Atsuko Takai 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).

  • 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
  • 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