TREA

Kenji Tokushige

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Transmitter
    • Patent number 7,574,180
    • Issue date Aug 11, 2009
    • Sony Corporation
    • Kensaku Abe
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number 6,587,571
    • Issue date Jul 1, 2003
    • Sony Corporation
    • Masao Fujihira
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number 6,542,617
    • Issue date Apr 1, 2003
    • Sony Corporation
    • Masao Fujihira
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Acoustic transducer
    • Patent number 6,175,637
    • Issue date Jan 16, 2001
    • Sony Corporation
    • Masao Fujihira
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Transmitter
    • Publication number 20060019616
    • Publication date Jan 26, 2006
    • Kensaku Abe
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE