TREA

by making use of hydraulic or pneumatic pressure in a borehole

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Industry

  • CPC
  • E21C37/06
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C37/00Other methods or devices for dislodging with or without loading

Current Industry

E21C37/06by making use of hydraulic or pneumatic pressure in a borehole
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Cartridge for tunnel blasting
    • Patent number 9,382,796
    • Issue date Jul 5, 2016
    • Korea Railroad Research Institute
    • Dong Hyeon Kim
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mining method for gassy and low permeability coal seams
    • Patent number 9,273,553
    • Issue date Mar 1, 2016
    • Ian Gray
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Demolition agent for brittle materials
    • Patent number 4,717,503
    • Issue date Jan 5, 1988
    • Mitsubishi Mining & Co., Ltd.
    • Yoshio Makino
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Method of hydrospalling
    • Patent number 4,394,051
    • Issue date Jul 19, 1983
    • The United States of America as represented by the Secretary of the Interior
    • Martin S. Oudenhoven
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydration-expansive crushing cartridge
    • Patent number 4,378,997
    • Issue date Apr 5, 1983
    • Nippon Oil and Fats Co., Ltd.
    • Tsuneo Kasama
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Method and apparatus for fracturing rock beds
    • Patent number 4,363,518
    • Issue date Dec 14, 1982
    • Kabushiki Kaisha Komatsu Seisakusho
    • Joji Nakamura
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method and device for breaking a hard compact material
    • Patent number 4,123,108
    • Issue date Oct 31, 1978
    • Atlas Copco Aktiebolag
    • Erik V. Lavon
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Mining method and apparatus
    • Patent number 4,053,182
    • Issue date Oct 11, 1977
    • Baughman; Ray M.
    • Rodney L. Nelson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2104579
    • Patent number 2,104,579
    • Issue date Jan 4, 1938
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2041950
    • Patent number 2,041,950
    • Issue date May 26, 1936
    • D04 - BRAIDING LACE-MAKING KNITTING TRIMMINGS NON-WOVEN FABRICS
  • Information Patent Grant

    110222
    • Patent number 110,222
    • Issue date Dec 20, 1870
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents