Patents by Inventor Eiji Ono

Eiji Ono 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-glutamic acid-producing bacterium and method for producing L-glutamic acid
    Patent number: 6197559
    Abstract: A method for producing L-glutamic acid which comprises culturing a microorganism belonging to the genus Klebsiella, Erwinia or Pantoea and having an ability to produce L-glutamic acid in a culture medium, and collecting produced L-glutamic acid from the culture medium. The microbial strain used is preferably a strain which decreases in or is deficient in an activity of an enzyme catalyzing a reaction branching from a pathway for L-glutamic acid biosynthesis and producing a compound other than L-glutamic acid, or a strain which increase in an activity of an enzyme catalyzing a reaction for L-glutamic acid biosynthesis.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: March 6, 2001
    Assignee: Ajinomoto Co., Inc.
    Inventors: Mika Moriya, Hiroshi Izui, Eiji Ono, Kazuhiko Matsui, Hisao Ito, Yoshihiko Hara
  • Process for producing L-glutamic acid by fermentation with E. coli resistant to aspartic acid antimetabolite
    Patent number: 5908768
    Abstract: A fermentative process for producing L-glutamic acid efficiently and at low cost is disclosed. Also disclosed are microorganisms having improved ability to produce L-glutamic acid. These microorganisms belong to the genus Escherichia, have resistance to an aspartic acid antimetabolite, and are deficient in .alpha.-ketoglutaric acid dehydrogenase activity. The process comprises cultivating one of these microorganisms in a liquid medium, accumulating L-glutamic acid in the culture medium, and collecting L-glutamic acid. In particular, E. coli AF13199 (FERM BP-5807).
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: June 1, 1999
    Assignee: Ajinomoto Co., Inc.
    Inventors: Eiji Ono, Nobuharu Tsujimoto, Hiroshi Izui, Kazuhiko Matsui
  • Mutant and method for producing L-glutamic acid by fermentation
    Patent number: 5573945
    Abstract: A mutant of the genus Escherichia is described, the .alpha.-ketoglutarate dehydrogenase activity of which is deficient or reduced, and/or the phosphoenol pyruvate carboxylase and/or glutamate dehydrogenase activities of which are amplified. The mutant is useful in the fermentative production of L-glutamic acid.
    Type: Grant
    Filed: January 9, 1995
    Date of Patent: November 12, 1996
    Assignee: Ajinomoto Co., Inc.
    Inventors: Eiji Ono, Nobuharu Tsujimoto, Kazuhiko Matsui, Osamu Kurahashi
  • Method of producing improved glyceride by lipase
    Patent number: 4275011
    Abstract: A glyceride product is prepared by interesterifying a glyceride mixture in the presence of a lipase as a catalyst with a dihydric alcohol, a trihydric alcohol, or mixture thereof, said glyceride mixture being composed of at least two different glycerides or at least one glyceride and at least one fatty acid.
    Type: Grant
    Filed: December 20, 1979
    Date of Patent: June 23, 1981
    Assignee: Ajinomoto Company, Incorporated
    Inventors: Takashi Tanaka, Eiji Ono, Koichi Takinami
  • Method for the production of L-lysine
    Patent number: 4275157
    Abstract: L-lysine is produced by culturing mutants of Corynebacterium or Brevibacterium which are sensitive to fluoropyruvic acid.
    Type: Grant
    Filed: July 10, 1979
    Date of Patent: June 23, 1981
    Assignee: Ajinomoto Company, Incorporated
    Inventors: Osamu Tosaka, Eiji Ono, Masaru Ishihara, Hajimu Morioka, Koichi Takinami