TREA

Tohru Iwai

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  • Osaka City, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Electromagnetic wave absorbing sheet
    • Patent number 6,521,829
    • Issue date Feb 18, 2003
    • Japan Science and Technology Corporation
    • Kazuhito Matsumura
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Oscillation detecting system for wireless repeater
    • Patent number 5,815,795
    • Issue date Sep 29, 1998
    • Sumitomo Electric Industries, Ltd.
    • Tohru Iwai
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Roadside beacon system with polarized beams
    • Patent number 4,983,984
    • Issue date Jan 8, 1991
    • Sumitomo Electric Industries, Ltd.
    • Yoshizo Shibano
    • G08 - SIGNALLING
  • Information Patent Grant

    Vehicle antenna with shiftable gain patterns
    • Patent number 4,887,090
    • Issue date Dec 12, 1989
    • Sumitomo Electric Industries
    • Yoshizo Shibano
    • G08 - SIGNALLING
  • Information Patent Grant

    Roadside beacon system
    • Patent number 4,833,481
    • Issue date May 23, 1989
    • Sumitomo Electric Industries, Ltd.
    • Yoshizo Shibano
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Roadside beacon system
    • Patent number 4,823,138
    • Issue date Apr 18, 1989
    • Sumitomo Electric Industries, Ltd.
    • Yoshizo Shibano
    • G08 - SIGNALLING
  • Information Patent Grant

    Picture image observation system
    • Patent number 4,444,462
    • Issue date Apr 24, 1984
    • Sumitomo Electric Industries, Ltd.
    • Kimizo Ono
    • G02 - OPTICS
  • Information Patent Grant

    Laser output controlling device
    • Patent number 4,429,392
    • Issue date Jan 31, 1984
    • Sumitomo Electric Industries, Ltd.
    • Kenichi Yoshida
    • H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

  • Information Patent Application

    Electromagnetic wave absorbing sheet
    • Publication number 20020148626
    • Publication date Oct 17, 2002
    • Kazuhito Matsumura
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC