TREA

Kazuhisa Kito

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  • Kanagawa, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Earphone device
    • Patent number 10,212,504
    • Issue date Feb 19, 2019
    • Sony Corporation
    • Kenji Ide
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Earphone device
    • Patent number 9,451,350
    • Issue date Sep 20, 2016
    • Sony Corporation
    • Kenji Ide
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Sound reproducing device
    • Patent number 9,025,799
    • Issue date May 5, 2015
    • Sony Corporation
    • Noriyuki Ozawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Acoustic apparatus and headphone
    • Patent number 7,065,219
    • Issue date Jun 20, 2006
    • Sony Corporation
    • Kensaku Abe
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    FM modulator
    • Patent number 6,211,748
    • Issue date Apr 3, 2001
    • Sony Corporation
    • Kensaku Abe
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Electro-acoustic transducer
    • Patent number 5,781,638
    • Issue date Jul 14, 1998
    • Sony Corporation
    • Akihiko Hosaka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    EARPHONE DEVICE
    • Publication number 20160373853
    • Publication date Dec 22, 2016
    • SONY CORPORATION
    • Kenji Ide
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    EARPHONE DEVICE
    • Publication number 20130051589
    • Publication date Feb 28, 2013
    • SONY CORPORATION
    • Kenji Ide
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SOUND REPRODUCING DEVICE
    • Publication number 20130051562
    • Publication date Feb 28, 2013
    • SONY CORPORATION
    • Noriyuki Ozawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE