TREA

Kohji Ishida

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Noise reduction apparatus in an FM stereo tuner
    • Patent number 5,253,299
    • Issue date Oct 12, 1993
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Noise reduction apparatus in an FM stereo tuner
    • Patent number 5,067,157
    • Issue date Nov 19, 1991
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Low-pass filter circuit
    • Patent number 4,633,496
    • Issue date Dec 30, 1986
    • Pioneer Electronic Corporation
    • Kiyoshi Ohtaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Multipath distortion reducing circuit
    • Patent number 4,590,615
    • Issue date May 20, 1986
    • Pioneer Electronic Corporation
    • Kiyoshi Ohtaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    FM Stereo demodulating circuit
    • Patent number 4,539,697
    • Issue date Sep 3, 1985
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    FM receiver
    • Patent number 4,523,329
    • Issue date Jun 11, 1985
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Circuit having square-law transfer characteristic
    • Patent number 4,510,452
    • Issue date Apr 9, 1985
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    FM Stereo demodulator for demodulating stereo signals directly from...
    • Patent number 4,502,148
    • Issue date Feb 26, 1985
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    FM stereo demodulator
    • Patent number 4,497,063
    • Issue date Jan 29, 1985
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    FM Stereo demodulation circuit
    • Patent number 4,489,430
    • Issue date Dec 18, 1984
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Multiplex demodulation circuit
    • Patent number 4,399,324
    • Issue date Aug 16, 1983
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    FM Receiver
    • Patent number 4,362,906
    • Issue date Dec 7, 1982
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Switching circuit
    • Patent number 4,315,221
    • Issue date Feb 9, 1982
    • Pioneer Electronic Corporation
    • Tatsuo Numata
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Stereophonic signal demodulation circuit
    • Patent number 4,280,101
    • Issue date Jul 21, 1981
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Chopper type switching circuit
    • Patent number 4,278,944
    • Issue date Jul 14, 1981
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    MPX Stereophonic demodulation
    • Patent number 4,274,057
    • Issue date Jun 16, 1981
    • Pioneer Electronic Corporation
    • Kohji Ishida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE