TREA

K. Maikai Co., Ltd.

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  • Tokyo, JP
Organizations

Patents Grantslast 30 patents

  • Information Patent Grant

    Remote operation wire line core sampling device
    • Patent number 7,743,827
    • Issue date Jun 29, 2010
    • Mitsui Engineering & Shipbuilding Co., Ltd.
    • Yukio Kadomoto
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole percussion drills
    • Patent number 6,752,222
    • Issue date Jun 22, 2004
    • National Institute of Advanced Industrial Science and Technology
    • Hirokazu Karasawa
    • E21 - EARTH DRILLING MINING