TREA

Shigeru Yamaguchi

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    DC current sensor
    • Patent number 5,523,677
    • Issue date Jun 4, 1996
    • Sumitomo Special Metals Co., Ltd.
    • Makoto Kawakami
    • G01 - MEASURING TESTING
  • Information Patent Grant

    DC current sensor
    • Patent number 5,486,756
    • Issue date Jan 23, 1996
    • Sumitomo Special Metals Co., Ltd.
    • Makoto Kawakami
    • G01 - MEASURING TESTING
  • Information Patent Grant

    DC current sensor using a continuous annularly shaped detection core
    • Patent number 5,475,301
    • Issue date Dec 12, 1995
    • Sumitomo Special Metals Co., Ltd.
    • Makoto Kawakami
    • G01 - MEASURING TESTING