Patents by Inventor Katsumi Koto

Katsumi Koto 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).

  • Low electrostatic capacity wire-wound type ignition cable
    Patent number: 4435692
    Abstract: An ignition cable for supplying voltage to the spark plugs of an internal combustion engine, the cable having a low electrostatic capacity such that it does not produce noise in an FM radio frequency band. A central reinforcing string made of aramido-type fibers is covered by a ferrite core. A resistance wire having 8,000-14,000 turns/meter is wound onto the core. The assembly is then coated with a polyolefin insulation layer, a crossed-fiber reinforcement layer, and a silicon sheath, respectively.
    Type: Grant
    Filed: December 28, 1982
    Date of Patent: March 6, 1984
    Assignees: Sumitomo Electric Industries, Ltd., Nippondenso Co., Ltd.
    Inventors: Yoshimi Miyamoto, Naotaka Nakamura, Fumiyoshi Akaku, Katsumi Koto, Tsutomu Kosaka