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Yoshiaki Tsutsui

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  • Hamamatsu-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Microphone device
    • Patent number 9,407,983
    • Issue date Aug 2, 2016
    • Yamaha Corporation
    • Kunihiro Kumagai
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Microphone Device
    • Publication number 20150373438
    • Publication date Dec 24, 2015
    • Yahama Corporation
    • Kunihiro KUMAGAI
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Audio-video apparatus
    • Publication number 20080225166
    • Publication date Sep 18, 2008
    • Yamaha Corporation
    • Hironari Kawai
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE