Patents by Inventor Susumu Tomohiro

Susumu Tomohiro 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 menaquinone-4
    Patent number: 4849354
    Abstract: Menaquinone-4 is produced by cultivating in culture media a microorganism belonging to the genus Corynebacterium Arthrobactor, Brevibacterium, Microbacterium, Cutobacterium, Auteobacterium or Flavobacterium which produces menaquinone-4 and recovering the same.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: July 18, 1989
    Assignee: Kyowa Hakko Kogyo Co., Ltd
    Inventors: Kenichiro Takayama, Yukoh Arai, Susumu Tomohiro, Shizuko Shirasuna
  • Process and microorganisms for producing mitomycin A by fermentation
    Patent number: 4673645
    Abstract: A process for producing mitomycin A by fermentation, which involves culturing a microorganism belonging to the genus Streptomyces, which is capable of producing mitomycin A and having at least one property of (1) deficiency in an ability to produce mitomycin C and (2) a resistance to tryptophan analog, in a culture medium forming and accummulating mitomycin A in the culture medium; and recovering mitomycin A therefrom. The microorganism preferably involves Streptomyces caespitosus T-17-135 (NRRL 12508) or Streptomyces caespitosus (NRRL 12513).
    Type: Grant
    Filed: September 3, 1982
    Date of Patent: June 16, 1987
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Susumu Tomohiro, Yuko Arai, Kazuyuki Mineura