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Hiroya Oizumi

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Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker device
    • Patent number 8,111,869
    • Issue date Feb 7, 2012
    • Pioneer Corporation
    • Minoru Horigome
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker
    • Patent number 5,822,444
    • Issue date Oct 13, 1998
    • Pioneer Electronic Corporation
    • Hiroya Oizumi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    SPEAKER DEVICE, AND AUTOMOBILE
    • Publication number 20110228949
    • Publication date Sep 22, 2011
    • Pioneer Corporation
    • Takahisa Haba
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20100054524
    • Publication date Mar 4, 2010
    • Pioneer Corporation
    • Minoru Horigome
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE