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Masaaki MIYAMOTO

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Patents Grantslast 30 patents

  • Information Patent Grant

    Multi-coil unit, voice coil, and electro-acoustic transducer using...
    • Patent number 9,253,577
    • Issue date Feb 2, 2016
    • Hosiden Corporation
    • Satoru Fujiwara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number D707204
    • Issue date Jun 17, 2014
    • Hosiden Corporation
    • Satoru Fujiwara
    • D14 - Recording, communication, or information retrieval equipment

Patents Applicationslast 30 patents