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Satoshi HAYAKAWA

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  • Hamamatsu-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker unit
    • Patent number 9,843,848
    • Issue date Dec 12, 2017
    • Yamaha Corporation
    • Hiroyuki Shiojima
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker unit
    • Patent number 9,774,937
    • Issue date Sep 26, 2017
    • Yamaha Corporation
    • Hiroyuki Shiojima
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    SPEAKER UNIT
    • Publication number 20160227306
    • Publication date Aug 4, 2016
    • Yamaha Corporation
    • Hiroyuki SHIOJIMA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER UNIT
    • Publication number 20160227307
    • Publication date Aug 4, 2016
    • Yamaha Corporation
    • Hiroyuki SHIOJIMA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE