Patents by Inventor Yukie Satoo

Yukie Satoo 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).

  • Patent number: 5153123
    Abstract: A method for producing L-threonine, which comprises subjecting at least L- or DL-aspartic acid or a salt thereof to enzymatic reaction according to the reaction system not accompanied with growth of microorganism cells in an aqueous solution in the presence of a microorganism and collecting L-threonine formed, wherein the microorganism is a biotin-requiring microorganism for the growth belonging to coryneform bacterium; a plasmid comprising a DNA fragment containing at least a gene encoding biosynthesis of threonine which can be expressed within a biotin-requiring microorganism cell for the growth belonging to coryneform bacterium and a DNA fragment containing a gene encoding autonomous replication within coryneform bacterium cell; and a biotin-requiring microorganism for the growth belonging to coryneform bacterium which has been transformed with the plasmid described above, both of which are employed in the present method.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: October 6, 1992
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Masato Terasawa, Terukazu Nara, Makiko Fukushima, Yukie Satoo, Mitsunobu Shimazu, Hideaki Yukawa, Yasurou Kurusu, Keiko Kohama
  • Patent number: 5019503
    Abstract: A method for producting L-threonine is described, comprising subjecting L- or DL-homoserine to enzymatic reaction in an aqueous medium in the presence of cells of biotin-requiring microorganisms belonging to the genus Brevibacterium and harvesting L-threonine from the reaction mixture.
    Type: Grant
    Filed: June 2, 1987
    Date of Patent: May 28, 1991
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Masato Terasawa, Yukie Satoo, Hideaki Yukawa
  • Patent number: 4912043
    Abstract: An aqueous solution containing fumaric acid is reacted in the presence of an aerobically cultured product of a microorganism belonging to the Brevibacterium genus and having resistance to .alpha.-aminobutyric acid, whereby L-malic acid is produced.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: March 27, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Masato Terasawa, Terukazu Nara, Hideaki Yukawa, Hisashi Yamagata, Yukie Satoo