Patents by Inventor Katsushige Gomi

Katsushige Gomi 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).

  • Mitomycin derivatives
    Patent number: 5180825
    Abstract: Disclosed in a mitomycin derivative represented by the formula (I): ##STR1## wherein W is a heterocyclic group.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: January 19, 1993
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hitoshi Arai, Motomichi Kono, Masaji Kasai, Katsushige Gomi, Tadashi Ashizawa
  • Process for producing diterpene compounds
    Patent number: 5151352
    Abstract: A clerodane-type diterpene derivative, which has antibacterial and antitumor activities, as well as chemically equivalent tautomers thereof and a process for producing said derivative using a microorganism belonging to the genus Streptomyces.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: September 29, 1992
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Hirofumi Nakano, Shozo Kawada, Yoichi Uosaki, Yutaka Saito, Katsushige Gomi, Toshiaki Iwazaki
  • Triphenylmethane derivatives
    Patent number: 5112867
    Abstract: A triphenylmethane derivative represented by the following general formula: ##STR1## exhibits born absorption inhibiting effects and is useful as a medicament for treating osteoporosis.
    Type: Grant
    Filed: April 27, 1990
    Date of Patent: May 12, 1992
    Assignee: Kyowa Hakko Gogyo Co., Ltd.
    Inventors: Iwao Kinoshita, Daisuke Machii, Yasuo Onoda, Haruki Takai, Nobuo Kasaka, Katsuichi Shuto, Katsushige Gomi, Makoto Morimoto, Akio Ishii
  • Chemical compound
    Patent number: 5082857
    Abstract: The present invention relates to a compound designated "DC114-C" having excellent anti-bacterial and anti-tumor activities. This compound may be obtained by fermentation of a microorganism of the genus Streptomyces, preferably Streptomyces sp. DO-114 (FERM BP-2641).
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: January 21, 1992
    Assignee: Kyowa Hakko Kogyo Kabushiki Kaisha
    Inventors: Hirofumi Nakano, Mitsunobu Hara, Yohichi Uosaki, Isao Kawamoto, Keiiechi Takahashi, Katsushige Gomi