Patents by Inventor Hisao Sakaguchi

Hisao Sakaguchi 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).

  • Electric power cable line and a method of fabricating the same
    Patent number: 5283392
    Abstract: An electric power cable line is arranged in which the insulating layer is increased to a greater thickness at two end portions of each cable than a thickness at the other or center portion of the same. Since the insulating layer is increased in thickness at the end portions of the cable, thus an electrical stress exerted on the overall layer construction of the end portions is lowered. Hence, the dielectric strength of the end portions of the cable becomes high and the power cable line will thus be increased in the operational reliability.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: February 1, 1994
    Assignee: Fujikura Ltd.
    Inventors: Hiroto Ooshima, Michio Takaoka, Hisao Sakaguchi