Patents by Inventor Michiharu Sugawara

Michiharu Sugawara 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).

  • Novel pyrazinoxide compound of NF-1616-904 and a pharmaceutical composition containing the same
    Patent number: 5021419
    Abstract: A novel pyrazinoxide compound of NF-1616-904 having the formula (1), ##STR1## prepared by hydrolyzing the intermediate compound of NF-1616-902 which is separated from a culture broth of a microorganism belonging to the genus Thielavia.The pyazinoxide compound of NF-1616-904 possess biological and pharmacological activities, and is useful agent for preventing and treating diseases caused by superoxide radicals (O.sub.2.sup.-), and nephritis.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: June 4, 1991
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Yoshimasa Nakano, Michiharu Sugawara, Setsuyoshi Uetsuki, Taketoshi Izawa, Tomoyuki Kawaguchi, Akira Wada
  • OA-7653 Substance
    Patent number: 4378348
    Abstract: The antibiotic of the invention is produced from a novel strain belonging to Streptomyces hygroscopicus, acts against various bacteria and is useful, for example, as active components of antibacterial compositions.
    Type: Grant
    Filed: September 16, 1980
    Date of Patent: March 29, 1983
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Tsutomu Nishida, Michiharu Sugawara, Takashi Kamogashira
  • Process for the production of antibiotic Cephamycin C
    Patent number: 4332891
    Abstract: A process for producing an antibiotic Cephamycin C which comprises cultivating a strain of Streptomyces sp. OFR 1022 in a culture medium to accumulate therein Cephamycin C and recovering said Cephamycin C.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: June 1, 1982
    Assignee: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Takashi Kamogashira, Tsutomu Nishida, Michiharu Sugawara, Tomiyo Nihno, Setsuko Takegata