Patents by Inventor Rie Takikawa

Rie Takikawa 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-amino acid-producing microorganism and method for producing L-amino acid
    Patent number: 8383363
    Abstract: L-amino acids are produced by culturing a microorganism which has an ability to produce the L-amino acid, but has been modified so that expression of the ybjE gene has been enhanced. The L-amino acid is collected from the culture medium or from the microorganism.
    Type: Grant
    Filed: June 7, 2007
    Date of Patent: February 26, 2013
    Assignee: Ajinomoto Co., Inc.
    Inventors: Takuji Ueda, Yuta Nakai, Yoshiya Gunji, Rie Takikawa, Yuji Joe
  • L-amino acid-producing microorganism and a method for producing an L-amino acid
    Patent number: 8206954
    Abstract: An L-amino acid is produced by culturing a bacterium belonging to the family Enterobacteriaceae, which has an L-amino acid-producing ability and inherently has a native activity of a glucose dehydrogenase that uses pyrroloquinoline quinone as a coenzyme, but has been modified so that the activity of the glucose dehydrogenase is reduced, in a medium, and collecting the L-amino acid from the medium.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: June 26, 2012
    Assignee: Ajinomoto Co., Inc.
    Inventors: Rie Takikawa, Yoshihiko Hara, Gen Nonaka, Kazuhiro Takumi
  • L-AMINO ACID-PRODUCING MICROORGANISM AND A METHOD FOR PRODUCING AN L-AMINO ACID
    Publication number: 20110212496
    Abstract: An L-amino acid is produced by culturing a bacterium belonging to the family Enterobacteriaceae, which has an L-amino acid-producing ability and inherently has a native activity of a glucose dehydrogenase that uses pyrroloquinoline quinone as a coenzyme, but has been modified so that the activity of the glucose dehydrogenase is reduced, in a medium, and collecting the L-amino acid from the medium.
    Type: Application
    Filed: March 1, 2011
    Publication date: September 1, 2011
    Inventors: Rie Takikawa, Yoshihiko Hara, Gen Nonaka, Kazuhiro Takumi
  • L-amino acid producing microorganism and a method for producing an L-amino acid
    Patent number: 7919284
    Abstract: A microorganism belonging to the family Enterobacteriaceae, which has an L-amino acid-producing ability and has been modified so that the kdp system is enhanced, 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: July 6, 2009
    Date of Patent: April 5, 2011
    Assignee: Ajinomoto Co., Inc.
    Inventors: Rie Takikawa, Yoshihiko Hara
  • L-AMINO ACID PRODUCING MICROORGANISM AND A METHOD FOR PRODUCING AN L-AMINO ACID
    Publication number: 20100062496
    Abstract: A microorganism belonging to the family Enterobacteriaceae, which has an L-amino acid-producing ability and has been modified so that the kdp system is enhanced, 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: July 6, 2009
    Publication date: March 11, 2010
    Inventors: Rie Takikawa, Yoshihiko Hara
  • L-amino acid-producing microorganism and method for producing L-amino acid
    Patent number: 7629142
    Abstract: L-amino acids are produced by culturing a microorganism which has an ability to produce the L-amino acid, but has been modified so that expression of the ybjE gene has been enhanced. The L-amino acid is collected from the culture medium or from the microorganism.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: December 8, 2009
    Assignee: Ajinomoto Co., Inc.
    Inventors: Takuji Ueda, Yuta Nakai, Yoshiya Gunji, Rie Takikawa, Yuji Joe
  • L-Amino acid-producing microorganism and method for producing L-amino acid
    Publication number: 20060019355
    Abstract: L-amino acids are produced by culturing a microorganism which has an ability to produce the L-amino acid, but has been modified so that expression of the ybjE gene has been enhanced. The L-amino acid is collected from the culture medium or from the microorganism.
    Type: Application
    Filed: January 28, 2005
    Publication date: January 26, 2006
    Inventors: Takuji Ueda, Yuta Nakai, Yoshiya Gunji, Rie Takikawa, Yuji Joe
  • Method for producing target substance by fermentation
    Publication number: 20040265956
    Abstract: The present invention describes a method for producing a target substance using a microorganism comprising culturing an Escherichia bacterium in a medium to produce and accumulate the target substance in the medium or the bacterium, and collecting the target substance. More specifically, the bacterium of the present invention can be a strain in which the fis gene on bacterial chromosome is disrupted so that the FIS protein does not function normally in the bacterium.
    Type: Application
    Filed: November 6, 2003
    Publication date: December 30, 2004
    Inventors: Rie Takikawa, Akira Imaizumi, Kazuhiko Matsui, Hiroyuki Kojima