TREA

Naoto Ohyama

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Directional coupler and wireless communication device
    • Patent number 9,178,264
    • Issue date Nov 3, 2015
    • TDK Corporation
    • Hajime Kuwajima
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Composite balun
    • Patent number 8,324,981
    • Issue date Dec 4, 2012
    • TDK Corporation
    • Shoichi Ohi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Grant

    Balun
    • Patent number 7,116,185
    • Issue date Oct 3, 2006
    • TDK Corporation
    • Shoichi Ohi
    • H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

  • Information Patent Application

    DIRECTIONAL COUPLER AND WIRELESS COMMUNICATION DEVICE
    • Publication number 20150180112
    • Publication date Jun 25, 2015
    • TDK Corporation
    • Hajime Kuwajima
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    DIRECTIONAL COUPLER AND WIRELESS COMMUNICATION DEVICE
    • Publication number 20130027273
    • Publication date Jan 31, 2013
    • TDK Corporation
    • Hajime Kuwajima
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    COMPOSITE BALUN
    • Publication number 20100301962
    • Publication date Dec 2, 2010
    • TDK Corporation
    • Shoichi Ohi
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Balun
    • Publication number 20050116787
    • Publication date Jun 2, 2005
    • TDK Corporation
    • Shoichi Ohi
    • H03 - BASIC ELECTRONIC CIRCUITRY