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Tsutomu Yamaguchi

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  • Shizuoka-ken, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20250111839
    • Publication date Apr 3, 2025
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20250111838
    • Publication date Apr 3, 2025
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20250104675
    • Publication date Mar 27, 2025
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEY WEIGHT AND KEY FOR KEYBOARD INSTRUMENT
    • Publication number 20250104676
    • Publication date Mar 27, 2025
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20240112660
    • Publication date Apr 4, 2024
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEY GUIDE STRUCTURE FOR KEYBOARD INSTRUMENT
    • Publication number 20240112655
    • Publication date Apr 4, 2024
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20230317039
    • Publication date Oct 5, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEY FOR KEYBOARD DEVICE
    • Publication number 20230317034
    • Publication date Oct 5, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20230317040
    • Publication date Oct 5, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20230317038
    • Publication date Oct 5, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20230097634
    • Publication date Mar 30, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20230101297
    • Publication date Mar 30, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20230100217
    • Publication date Mar 30, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEY FOR KEYBOARD DEVICE
    • Publication number 20230098045
    • Publication date Mar 30, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20230097821
    • Publication date Mar 30, 2023
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    KEYBOARD DEVICE FOR KEYBOARD INSTRUMENT
    • Publication number 20220310050
    • Publication date Sep 29, 2022
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu YAMAGUCHI
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    Stopper for Keyboard-Based Musical Instruments
    • Publication number 20080127807
    • Publication date Jun 5, 2008
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu Yamaguchi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    Key for keyboard-based musical instruments
    • Publication number 20070137461
    • Publication date Jun 21, 2007
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu Yamaguchi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    Keyboard device for keyboard instrument
    • Publication number 20060021490
    • Publication date Feb 2, 2006
    • Kabushiki Kaisha Kawai Gakki
    • Tsutomu Yamaguchi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    Keyboard device for keyboard musical instrument
    • Publication number 20040065186
    • Publication date Apr 8, 2004
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Tsutomu Yamaguchi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS