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  • CPC
  • E21D1/12
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D1/00Sinking shafts

Current Industry

E21D1/12by freezing
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Artificial ground freezing method and artificial ground freezing sy...
    • Patent number 10,221,537
    • Issue date Mar 5, 2019
    • CHEMICAL GROUTING CO., LTD.
    • Yuichi Tachiwada
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Method and apparatus for artificial ground freezing
    • Patent number 6,796,139
    • Issue date Sep 28, 2004
    • Layne Christensen Company
    • George Briley
    • A63 - SPORTS GAMES AMUSEMENTS
  • Information Patent Grant

    Method for placement of a permeable remediation zone in situ
    • Patent number 5,730,550
    • Issue date Mar 24, 1998
    • Board of Trustees operating Michigan State University
    • Orlando B. Andersland
    • B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
  • Information Patent Grant

    Method for excavating a large diameter shaft into the earth and at...
    • Patent number 4,597,444
    • Issue date Jul 1, 1986
    • Atlantic Richfield Company
    • Thomas S. Hutchinson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3660987
    • Patent number 3,660,987
    • Issue date May 9, 1972
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    3436919
    • Patent number 3,436,919
    • Issue date Apr 8, 1969
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    3411302
    • Patent number 3,411,302
    • Issue date Nov 19, 1968
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    3292377
    • Patent number 3,292,377
    • Issue date Dec 20, 1966
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    3271962
    • Patent number 3,271,962
    • Issue date Sep 13, 1966
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3267680
    • Patent number 3,267,680
    • Issue date Aug 23, 1966
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    3183675
    • Patent number 3,183,675
    • Issue date May 18, 1965
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    3058316
    • Patent number 3,058,316
    • Issue date Oct 16, 1962
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    3004601
    • Patent number 3,004,601
    • Issue date Oct 17, 1961
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2932170
    • Patent number 2,932,170
    • Issue date Apr 12, 1960
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    2796739
    • Patent number 2,796,739
    • Issue date Jun 25, 1957
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    2645093
    • Patent number 2,645,093
    • Issue date Jul 14, 1953
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    2621022
    • Patent number 2,621,022
    • Issue date Dec 9, 1952
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2311705
    • Patent number 2,311,705
    • Issue date Feb 23, 1943
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    2193219
    • Patent number 2,193,219
    • Issue date Mar 12, 1940
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2145473
    • Patent number 2,145,473
    • Issue date Jan 31, 1939
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2033561
    • Patent number 2,033,561
    • Issue date Mar 10, 1936
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1614013
    • Patent number 1,614,013
    • Issue date Jan 11, 1927
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    1562137
    • Patent number 1,562,137
    • Issue date Nov 17, 1925
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    1342780
    • Patent number 1,342,780
    • Issue date Jun 8, 1920
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1321230
    • Patent number 1,321,230
    • Issue date Nov 11, 1919
    • F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...

Patents Applicationslast 30 patents