Patents by Inventor Hideo Chimura

Hideo Chimura 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).

  • Microbial production of certain isoflavones
    Patent number: 3973608
    Abstract: This invention relates to the novel compounds 3',5,7-trihydroxy-4',6-dimethoxy-isoflavone, 3',5,7-trihydroxy-4',8-dimethoxy-isoflavone and 3',7-dihydroxy-4',6,8-trimethoxy-isoflavone which are powerful inhibitors of catechol-O-methyl transferase (COMT) and to their production by fermentation of Actinomyces roseolus.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: August 10, 1976
    Assignee: Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai
    Inventors: Hamao Umezawa, Tomio Takeuchi, Hideo Chimura, Tsutomu Sawa, Masa Hamada
  • Microbial production of certain isoflavones
    Patent number: 3974184
    Abstract: This invention relates to the novel compounds 3',5,7-trihydroxy-4',6-dimethoxy-isoflavone, 3'5,7-trihydroxy-4',8-dimethoxy-isoflavone and 3',7-dihydroxy-4',6,8-trimethoxy-isoflavone which are powerful inhibitors of catechol-O-methyl transferase (COMT) and to their production by fermentation of Actinomyces roseolus.
    Type: Grant
    Filed: July 23, 1974
    Date of Patent: August 10, 1976
    Assignee: Zaidan Hojin Biseibutsu Kagaku Kenkyu Kai
    Inventors: Hamao Umezawa, Tomio Takeuchi, Hideo Chimura, Tsutomu Sawa, Masa Hamada
  • Novel process for producing antibiotics bleomycin
    Patent number: RE30451
    Abstract: A novel process for producing antibiotics bleomycins by innoculating and aerobically culturing in a nutrient source-containing medium a bleomycin-producing strain belonging to the actinomyces, wherein the culture is effected in the presence of an amino compound having at least one ##STR1## group and at least one basic group selected from amino, imino, guanidino, amidino and sulfonium groups and nitrogen-containing cyclic compounds, or in the presence of a compound convertible in the culture liquor to such amino compound as mentioned above, thereby selectively producing a known or novel bleomycin component corresponding to the said amino compound or to an amino compound derived from the above-mentioned compound, and then the known or novel bleomycin is recovered by known means from the culture medium.
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: December 16, 1980
    Assignee: Zaidan Jojin Biseibutsu Kagaku Kenkyu Kai
    Inventors: Hamao Umezawa, Kenji Maeda, Tomohisa Takita, Yuya Nakayama, Akio Fujii, Nobuyoshi Shimada, Hideo Chimura