Patents by Inventor Michio Ishiwari

Michio Ishiwari 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).

  • Rod insulator with elastic overcoats and conducting paths straddling joint portions of adjacent overcoats
    Patent number: 4427843
    Abstract: A synthetic resin insulator comprising a fiber-reinforced plastic rod provided at its both ends with holding metal fittings; a plural number of overcoats fitting to and covering the plastic rod, each overcoat consisting of an elastic insulating material and provided at its outside with a shed; and a conducting path formed straddling the joint portion of adjacent overcoats flows leakage current through the conducting path, is not eroded at the joint portion of adjacent overcoats, and is very long in the life.
    Type: Grant
    Filed: November 19, 1981
    Date of Patent: January 24, 1984
    Assignee: NGK Insulators Ltd.
    Inventors: Takeshi Ishihara, Michio Ishiwari, Shigeo Ishino