TREA

Masayoshi Hasegawa

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sound output device
    • Patent number 11,895,459
    • Issue date Feb 6, 2024
    • Sony Group Corporation
    • Masayoshi Hasegawa
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Electrical connecting apparatus
    • Patent number 7,165,975
    • Issue date Jan 23, 2007
    • Kabushiki Kaisha Nihon Micronics
    • Yoshiei Hasegawa
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    SOUND OUTPUT DEVICE
    • Publication number 20220248126
    • Publication date Aug 4, 2022
    • SONY GROUP CORPORATION
    • MASAYOSHI HASEGAWA
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Application

    Electric connector
    • Publication number 20060128175
    • Publication date Jun 15, 2006
    • Yoshiei Hasegawa
    • H01 - BASIC ELECTRIC ELEMENTS