Patents by Inventor Yoshiyuki Tetsu

Yoshiyuki Tetsu 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).

  • Partial discharging-resistant wire enamel composition and partial discharging-resistant magnet wire
    Patent number: 6811875
    Abstract: The prevent invention provides a partial discharge-resistant wire enamel composition wherein at least one fine particle sol selected from the group of metal oxide fine particle sol and silicon oxide fine particle sol is dispersed, and 3 to 100 parts by weight of at least one fine particle selected from the group of a metal oxide fine particle and a silicon oxide fine particle is contained per 100 parts by weight of wire enamel resin. Accordingly, the partial discharge-resistant wire enamel composition having excellent dispersibility of inorganic fine particle can be obtained.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: November 2, 2004
    Assignee: Hitachi Cable, Ltd.
    Inventors: Hideyuki Kikuchi, Yoshiyuki Tetsu
  • Partial discharging-resistant wire enamel composition and partial discharging-resistant magnet wire
    Publication number: 20030232144
    Abstract: The prevent invention provides a partial discharge-resistant wire enamel composition wherein at least one fine particle sol selected from the group of metal oxide fine particle sol and silicon oxide fine particle sol is dispersed, and 3 to 100 parts by weight of at least one fine particle selected from the group of a metal oxide fine particle and a silicon oxide fine particle is contained per 100 parts by weight of wire enamel resin. Accordingly, the partial discharge-resistant wire enamel composition having excellent dispersibility of inorganic fine particle can be obtained.
    Type: Application
    Filed: February 16, 2001
    Publication date: December 18, 2003
    Inventors: Hideyuki Kikuchi, Yoshiyuki Tetsu
  • Wire with coating for ultrasonic bonding
    Patent number: 4963435
    Abstract: A wire with a coated layer for bonding to a joint body by ultrasonic vibration, the coated layer of said wire comprising urethane resin having formulated therein a brominated epoxy resin.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: October 16, 1990
    Assignees: Hitachi, Ltd., Hitachi Computer Peripherals Co., Ltd., Hitachi Cable, Ltd.
    Inventors: Shigeo Hara, Setsuo Sekine, Toshio Suzuki, Minoru Taguchi, Akio Mitsuoka, Yoshiyuki Tetsu