TREA

Hisashi Takeyama

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  • Hamamatsu-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Keyboard apparatus
    • Patent number 8,889,975
    • Issue date Nov 18, 2014
    • Yamaha Corporation
    • Akihiko Komatsu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Keyboard apparatus
    • Patent number 8,779,256
    • Issue date Jul 15, 2014
    • Yamaha Corporation
    • Shigeru Muramatsu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Keyboard apparatus
    • Patent number 8,648,236
    • Issue date Feb 11, 2014
    • Yamaha Corporation
    • Yoshinori Hayashi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Keyboard apparatus
    • Patent number 8,558,095
    • Issue date Oct 15, 2013
    • Yamaha Corporation
    • Shigeru Muramatsu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Upright piano type action
    • Patent number 8,389,833
    • Issue date Mar 5, 2013
    • Yamaha Corporation
    • Shigeru Muramatsu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Upright piano type action
    • Patent number 8,294,009
    • Issue date Oct 23, 2012
    • Yamaha Corporation
    • Shigeru Muramatsu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Pedal device of electronic keyboard musical instrument
    • Patent number 8,222,509
    • Issue date Jul 17, 2012
    • Yamaha Corporation
    • Shigeru Muramatsu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Pedal apparatus of electronic musical instrument
    • Patent number 7,893,334
    • Issue date Feb 22, 2011
    • Yamaha Corporation
    • Toshiyuki Iwamoto
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    KEYBOARD APPARATUS
    • Publication number 20130233150
    • Publication date Sep 12, 2013
    • Yamaha Corporation
    • Akihiko Komatsu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD APPARATUS
    • Publication number 20130199356
    • Publication date Aug 8, 2013
    • Yamaha Corporation
    • Yoshinori Hayashi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    UPRIGHT PIANO TYPE ACTION
    • Publication number 20110232457
    • Publication date Sep 29, 2011
    • Yamaha Corporation
    • Shigeru MURAMATSU
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    UPRIGHT PIANO TYPE ACTION
    • Publication number 20110232456
    • Publication date Sep 29, 2011
    • Yamaha Corporation
    • Shigeru MURAMATSU
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD APPARATUS
    • Publication number 20110232454
    • Publication date Sep 29, 2011
    • Yamaha Corporation
    • Shigeru MURAMATSU
    • G01 - MEASURING TESTING
  • Information Patent Application

    KEYBOARD APPARATUS
    • Publication number 20110232455
    • Publication date Sep 29, 2011
    • Yamaha Corporation
    • Shigeru MURAMATSU
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    PEDAL DEVICE OF ELECTRONIC KEYBOARD MUSICAL INSTRUMENT
    • Publication number 20100229711
    • Publication date Sep 16, 2010
    • Yamaha Corporation
    • Shigeru Muramatsu
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    PEDAL APPARATUS OF ELECTRONIC MUSICAL INSTRUMENT
    • Publication number 20090229440
    • Publication date Sep 17, 2009
    • Yamaha Corporation
    • Toshiyuki IWAMOTO
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS