TREA

Daigaku KUMANO

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  • Tokyo, JP
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Patents Applicationslast 30 patents

  • Information Patent Application

    EARPHONE
    • Publication number 20220312101
    • Publication date Sep 29, 2022
    • SONY GROUP CORPORATION
    • RYUTARO NAKAGAWA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SOUND OUTPUT DEVICE
    • Publication number 20220103919
    • Publication date Mar 31, 2022
    • SONY GROUP CORPORATION
    • Sai KARASAWA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE