TREA

Hiroyuki Shirakawa

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  • Kanagawa, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    SOUND OUTPUT DEVICE
    • Publication number 20250024196
    • Publication date Jan 16, 2025
    • SONY GROUP CORPORATION
    • YUKIO NAGAHAMA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Sound Reproducing Apparatus And Method
    • Publication number 20230412979
    • Publication date Dec 21, 2023
    • SONY GROUP CORPORATION
    • Hiroshi Yoshioka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER SYSTEM AND SOUND OUTPUT METHOD
    • Publication number 20230007389
    • Publication date Jan 5, 2023
    • SONY GROUP CORPORATION
    • Kazunobu Ookuri
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS