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Toshikazu Yoshimi

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  • Saitama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Communication device having air-borne and solid-borne transmitting...
    • Patent number 5,511,132
    • Issue date Apr 23, 1996
    • Pioneer Electronic Corporation
    • Toshikazu Yoshimi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Earphone
    • Patent number 5,396,563
    • Issue date Mar 7, 1995
    • Pioneer Electronic Corporation
    • Toshikazu Yoshimi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Automatic level control circuit
    • Patent number 5,043,676
    • Issue date Aug 27, 1991
    • Pioneer Electronic Corporation
    • Takeshi Sato
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Sound field correction system
    • Patent number 4,980,914
    • Issue date Dec 25, 1990
    • Pioneer Electronic Corporation
    • Yoshiro Kunugi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Limiter circuit
    • Patent number 4,928,071
    • Issue date May 22, 1990
    • Pioneer Electronic Corporation
    • Hideo Yamamoto
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Balanced vehicular speaker system
    • Patent number 4,914,707
    • Issue date Apr 3, 1990
    • Pioneer Electronic Corporation
    • Shinjiro Kato
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Sound field correction system
    • Patent number 4,868,878
    • Issue date Sep 19, 1989
    • Pioneer Electronic Corporation
    • Yoshiro Kunugi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Method and apparatus for measuring and correcting acoustic characte...
    • Patent number 4,739,513
    • Issue date Apr 19, 1988
    • Pioneer Electronic Corporation
    • Yoshiro Kunugi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Mobile sound field correcting device
    • Patent number 4,648,117
    • Issue date Mar 3, 1987
    • Pioneer Electronic Corporation
    • Yoshiro Kunugi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Mobile sound field correcting device
    • Patent number 4,622,691
    • Issue date Nov 11, 1986
    • Pioneer Electronic Corporation
    • Akio Tokumo
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Earphone
    • Patent number 4,403,120
    • Issue date Sep 6, 1983
    • Pioneer Electronic Corporation
    • Toshikazu Yoshimi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Audio amplifier device
    • Patent number 4,327,331
    • Issue date Apr 27, 1982
    • Pioneer Electronic Corporation
    • Toshikazu Yoshimi
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Piezoelectric transducer with multiple electrode areas
    • Patent number 4,170,742
    • Issue date Oct 9, 1979
    • Pioneer Electronic Corporation
    • Tadasi Itagaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents