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Sadaaki Ezawa

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  • Shizuoka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus for drilling pronunciation
    • Patent number 5,142,657
    • Issue date Aug 25, 1992
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Sadaaki Ezawa
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Apparatus for drilling pronunciation
    • Patent number 4,969,194
    • Issue date Nov 6, 1990
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Sadaaki Ezawa
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
  • Information Patent Grant

    Electronic musical instrument
    • Patent number 4,539,885
    • Issue date Sep 10, 1985
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Sadaaki Ezawa
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Card operation indicator for magnetic card drive devices
    • Patent number 4,524,269
    • Issue date Jun 18, 1985
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Sadaaki Ezawa
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    Electronic musical instrument
    • Patent number 4,512,230
    • Issue date Apr 23, 1985
    • Kawai Musical Instrument Mfg. Co., Ltd.
    • Sadaaki Ezawa
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Electronic musical instrument
    • Patent number 4,498,364
    • Issue date Feb 12, 1985
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Sadaaki Ezawa
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Effect generating system for an electronic musical instrument
    • Patent number 4,442,751
    • Issue date Apr 17, 1984
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Sadaaki Ezawa
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Electronic musical instrument
    • Patent number 4,424,730
    • Issue date Jan 10, 1984
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Sadaaki Ezawa
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Key switch information assignor
    • Patent number 4,357,849
    • Issue date Nov 9, 1982
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Sadaaki Ezawa
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Electronic musical instrument
    • Patent number 4,282,785
    • Issue date Aug 11, 1981
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Nobuharu Obayashi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Electronic musical instrument
    • Patent number 4,174,649
    • Issue date Nov 20, 1979
    • Kabushiki Kaisha Kawai Gakki Seisakusho
    • Nobuharu Obayashi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS