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Kazuhiro Onizuka

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wireless earphone charger, wireless earphone and wireless earphone...
    • Patent number 11,399,227
    • Issue date Jul 26, 2022
    • Audio-Technica Corporation
    • Kazuhiro Onizuka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Conference system
    • Patent number 11,303,755
    • Issue date Apr 12, 2022
    • Audio-Technica Corporation
    • Kazuhiro Onizuka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Sound signal processing device, sound signal processing method and...
    • Patent number 11,227,618
    • Issue date Jan 18, 2022
    • Audio-Technica Corporation
    • Kazuhiro Onizuka
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS
  • Information Patent Grant

    Conference system
    • Patent number 10,791,156
    • Issue date Sep 29, 2020
    • Audio-Technica Corporation
    • Kazuhiro Onizuka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Conference system
    • Patent number 10,666,809
    • Issue date May 26, 2020
    • Audio-Technica Corporation
    • Kazuhiro Onizuka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Noise detector and sound signal output device
    • Patent number 10,157,603
    • Issue date Dec 18, 2018
    • Audio-Technica Corporation
    • Yasuhito Kikuhara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Feedback detector and suppressor
    • Patent number 5,677,987
    • Issue date Oct 14, 1997
    • Matsushita Electric Industrial Co., Ltd.
    • Nobuyuki Seki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents