Patents by Inventor Kachio Ikeda

Kachio Ikeda 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).

  • Dielectric filter having corresponding individual external and ground electrodes formed on a dielectric substrate
    Patent number: 5422612
    Abstract: In a dielectric filter according to the present invention, a depressed part is formed by removing a portion of an outer peripheral conductor on the open face side of each of a plurality of one-end face short-circuited type coaxial resonators or a portion of the outer peripheral conductor including a dielectric member. A dielectric substrate having a plurality of capacitance forming electrodes for forming antiresonance capacitances between the electrodes and inner peripheral conductors of the coaxial resonators formed thereon is mounted on the depressed part, and a reactance element for coupling the capacitance forming electrodes is provided on the dielectric substrate.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: June 6, 1995
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yasumi Kobayashi, Kousuke Takeuchi, Kachio Ikeda, Kenichi Shibata, Kazuhiko Kuroki
  • Dielectric filter comprising a plurality of coaxial resonators of different lengths all having the same resonant frequency
    Patent number: 5345202
    Abstract: In a dielectric filter according to the present invention, a depressed part is formed by removing a portion of an outer peripheral conductor on the open face side of each of a plurality of one-end face short-circuited type coaxial resonators or a portion of the outer peripheral conductor including a dielectric member. A dielectric substrate having a plurality of capacitance forming electrodes for forming antiresonance capacitances between the electrodes and inner peripheral conductors of the coaxial resonators formed thereon is mounted on the depressed part, and a reactance element for coupling the capacitance forming electrodes is provided on the dielectric substrate.
    Type: Grant
    Filed: September 22, 1993
    Date of Patent: September 6, 1994
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yasumi Kobayashi, Kousuke Takeuchi, Kachio Ikeda, Kenichi Shibata, Kazuhiko Kuroki
  • Dielectric filter having external connection terminals on dielectric substrate and antenna duplexer using the same
    Patent number: 5293141
    Abstract: In a dielectric filter according to the present invention, a depressed part is formed by removing a portion of an outer peripheral conductor on the open face side of each of a plurality of one-end face short-circuited type coaxial resonators or a portion of the outer peripheral conductor including a dielectric member. A dielectric substrate having a plurality of capacitance forming electrodes for forming antiresonance capacitances between the electrodes and inner peripheral conductors of the coaxial resonators formed thereon is mounted on the depressed part, and a reactance element for coupling the capacitance forming electrodes is provided on the dielectric substrate.
    Type: Grant
    Filed: March 18, 1992
    Date of Patent: March 8, 1994
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yasumi Kobayashi, Kousuke Takeuchi, Kachio Ikeda, Kenichi Shibata, Kazuhiko Kuroki