Patents by Inventor Ayako Someya

Ayako Someya 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).

  • Physiologically active substances PF1092A, PF1092B and PF1092C, process for the production thereof, and contraceptives and anticancer drugs containing the same as active ingredients
    Patent number: 5789602
    Abstract: This invention provides novel physiologically active substances PF1092A, PF1092B and PF1092C, which can inhibit binding of progesterone to progesterone receptor. These substances were obtained by culturing a fungal microorganism belonging to the genus Penicillium using a medium containing ordinary nutrients for microorganisms and isolating the physiologically active substances PF1092A, PF1092B and PF1092C from the resulting culture mixture by means of solvent extraction, silica gel column chromatography, and the like. Molecular formulae of the novel physiologically active substances PF1092A, PF1092B and PF1092C are C.sub.17 H.sub.20 O.sub.5, C.sub.17 H.sub.20 O.sub.5 and C.sub.15 H.sub.18 O.sub.4, respectively.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: August 4, 1998
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yuji Tabata, Masahiro Hatsu, Naoko Miike, Takashi Yaguchi, Ayako Someya, Yasushi Kurata
  • Physiologically active substances PF1092A, PF1092B and PF1092C, and contraceptives and anticancer drugs containing the same as active ingredients
    Patent number: 5712306
    Abstract: This invention provides novel physiologically active substances PF1092A, PF1092B and PF1092C, which can inhibit binding of progesterone to progesterone receptor.These substances were obtained by culturing a fungal microorganism belonging to the genus Penicillium using a medium containing ordinary nutrients for microorganisms and isolating the physiologically active substances PF1092A, PF1092B and PF1092C from the resulting culture mixture by means of solvent extraction, silica gel column chromatography, and the like. Molecular formulae of the novel physiologically active substances PF1092A, PF1092B and PF1092C are C.sub.17 H.sub.20 O.sub.5, C.sub.17 H.sub.20 O.sub.5 and C.sub.15 H.sub.18 O.sub.4, respectively.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: January 27, 1998
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Yuji Tabata, Masahiro Hatsu, Naoko Miike, Takashi Yaguchi, Ayako Someya, Yasushi Kurata