Patents by Inventor Kiyoji Hattori

Kiyoji Hattori 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).

  • Process for producing L-glutamic acid by fermentation
    Patent number: 4729952
    Abstract: A process is disclosed for producing L-glutamic acid, the process involves culturing a microorganism belonging to the genus Corynebacterium or Brevibacterium and having both an ability to produce L-glutamic acid and a resistance to .alpha.-naphthoquinoline, an antibiotic inhibiting energy metabolism or a precursor for ubiquinone biosynthesis in a nutrient medium until L-glutamic acid is accumulated in the resulting culture liquor, and recovering the L-glutamic acid therefrom.
    Type: Grant
    Filed: February 23, 1984
    Date of Patent: March 8, 1988
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kiyoji Hattori, Yukinobu Kotani, Kuniki Kino
  • Process for producing L-lysine by fermentation
    Patent number: 4623623
    Abstract: A process is disclosed for producing L-lysine by culturing a microorganism obtained by protoplast fusion and having an ability to produce L-lysine in a nutrient medium, forming and accumulating L-lysine in the resulting culture liquor, and recovering the L-lysine therefrom. Also, there are disclosed a number of microorganisms for producing L-lysine which are obtained by protoplast fusion.
    Type: Grant
    Filed: June 3, 1985
    Date of Patent: November 18, 1986
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Toshihide Nakanishi, Tomoki Azuma, Toshihiko Hirao, Kiyoji Hattori, Minoru Sakurai
  • Citric acid producing mutant yeast strains
    Patent number: 4322498
    Abstract: Citric acid is selectively produced by fermentation of a mutant yeast strain which requires the presence of iron in the culture medium. Citric acid is accumulated in the culture medium and isolated therefrom.
    Type: Grant
    Filed: October 16, 1974
    Date of Patent: March 30, 1982
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kenichiro Takayama, Tetsuo Adachi, Mamoru Kohata, Kiyoji Hattori, Tomoko Tomiyama