TREA

Daiho Construction Co., Ltd.

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Underground excavator
    • Patent number 5,032,039
    • Issue date Jul 16, 1991
    • Daiho Construction Co., Ltd.
    • Hakumi Hagimoto
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Control system for synchronous rotation of cutter heads, for use in...
    • Patent number 4,939,431
    • Issue date Jul 3, 1990
    • Ishikawajima-Harima Kukogyo K.K.
    • Hidetsugu Yamazaki
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Caisson sinking method
    • Patent number 4,797,031
    • Issue date Jan 10, 1989
    • Daiho Construction Co., Ltd.
    • Hakumi Hagimoto
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Shield tunnel boring machine
    • Patent number 4,607,889
    • Issue date Aug 26, 1986
    • Daiho Construction Co., Ltd.
    • Hakumi Hagimoto
    • E21 - EARTH DRILLING MINING