Patents by Inventor Takahiro Nobukawa

Takahiro Nobukawa 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).

  • Method of treating or preventing osteoporosis using isotaxiresinol derived from Taxus yunnanensis
    Patent number: 7666913
    Abstract: The object of the present invention is to provide a drug effective in treating or preventing osteoporosis. The present invention discloses a therapeutic or preventive drug for osteoporosis having a compound shown in the formula (1) (wherein R1 is an alkyloxy group with the carbon number of 1 to 4) or a pharmaceutically acceptable salt or ester of said compound in the formula (1) as an effective ingredient. In the compound of the formula (1), a substance in which R1 is CH3O is isotaxiresinol derived from Taxus yunanennsis and showed physiological activities in inhibiting bone resorption and improving bone formation.
    Type: Grant
    Filed: January 27, 2005
    Date of Patent: February 23, 2010
    Assignee: Kotosugi Inc.
    Inventors: Shigetoshi Kadota, Takahiro Nobukawa
  • Therapeutic or preventive drug for osteoporosis comprising isotaxiresinol derived from taxus yunnanensis
    Publication number: 20090143483
    Abstract: The object of the present invention is to provide a drug effective in treating or preventing osteoporosis. The present invention discloses a therapeutic or preventive drug for osteoporosis having a compound shown in the formula (1) (wherein R1 is an alkyloxy group with the carbon number of 1 to 4) or a pharmaceutically acceptable salt or ester of said compound in the formula (1) as an effective ingredient. In the compound of the formula (1), a substance in which R1 is CH3O is isotaxiresinol derived from Taxus yunanennsis and showed physiological activities in inhibiting bone resorption and improving bone formation.
    Type: Application
    Filed: January 27, 2005
    Publication date: June 4, 2009
    Applicant: Kotosugi Inc.
    Inventors: Shigetoshi Kadota, Takahiro Nobukawa
  • Hypoglycemic agent, hepatoprotecting agent and anticancer agent containing lignans derived from hongdoushan
    Publication number: 20080146659
    Abstract: Drugs containing Taxiresinol, (7?R)-7?-Hydroxylariciresinol, Secoisolariciresinol and Isotaxiresinol, which are lignans contained in Hongdoushan, as the active ingredients. Drugs containing an extract, which is obtained by extracting a Hongdoushan plant with water and further extracting the obtained extract with an organic solvent, as the active ingredient. These drugs are useful particularly as a hypoglycemic agent, a liver protecting agent and an anticancer agent.
    Type: Application
    Filed: February 8, 2008
    Publication date: June 19, 2008
    Applicant: KOTOSUGI INC.
    Inventors: Shigetoshi Kadota, Takahiro Nobukawa
  • Hypoglycemic agent, liver protecting agent and anticancer agent containing lignans originating in hongdoushan
    Publication number: 20060035964
    Abstract: Drugs containing Taxiresinol, (7?R)-7?-Hydroxylariciresinol, Secoisolariciresinol and Isotaxiresinol, which are lignans contained in Hongdoushan, as the active ingredients. Drugs containing an extract, which is obtained by extracting a Hongdoushan plant with water and further extracting the obtained extract with an organic solvent, as the active ingredient. These drugs are useful particularly as a hypoglycemic agent, a liver protecting agent and an anticancer agent.
    Type: Application
    Filed: July 23, 2003
    Publication date: February 16, 2006
    Inventors: Shigetoshi Kadota, Takahiro Nobukawa