Patents by Inventor Mitsunori Takamura

Mitsunori Takamura 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).

  • Absorbed type lightning rod and absorbed type lightning discharging apparatus
    Patent number: 5998731
    Abstract: The lightning rod of the present invention is an absorbed type lightning rod which absorbs all lightning stroke current. This absorbed type lightning rod includes a conductive pole, a circular cone-shaped primary rod having an acute point, placed on the top of the pole, and a secondary rod having an acute point lower than that of the primary rod. In this lightning rod, the lightning induction of the primary rod is enhanced by the secondary rod.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: December 7, 1999
    Assignee: Etsuko Takamura
    Inventor: Mitsunori Takamura