TREA

of the sliding wedge type

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Industry

  • CPC
  • E21B25/12
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21BEARTH DRILLING E21B25/00Apparatus for obtaining or removing undisturbed cores

Current Industry

E21B25/12of the sliding wedge type
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Core barrel sealing structure capable of increasing sealing-specifi...
    • Patent number 11,761,283
    • Issue date Sep 19, 2023
    • Shenzhen University
    • Heping Xie
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Core lifter
    • Patent number 10,612,308
    • Issue date Apr 7, 2020
    • BLY IP INC.
    • Christopher L. Drenth
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Apparatus and method for withdrawing cores from drilled holes
    • Patent number 10,428,612
    • Issue date Oct 1, 2019
    • Byron Harvey Wade
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Coring tools and related methods
    • Patent number 9,598,911
    • Issue date Mar 21, 2017
    • Baker Hughes Incorporated
    • Thomas Uhlenberg
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Core lifter
    • Patent number 8,770,320
    • Issue date Jul 8, 2014
    • Longyear TM, Inc.
    • Christopher L. Drenth
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Rock core removal method and apparatus
    • Patent number 7,934,568
    • Issue date May 3, 2011
    • Thomas M. Myrick
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Core sampler
    • Patent number 6,116,358
    • Issue date Sep 12, 2000
    • Baroid Technology, Inc.
    • Philippe Fanuel
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Core catcher for use with an hydraulically displaced inner tube in...
    • Patent number 4,651,835
    • Issue date Mar 24, 1987
    • Eastman Christensen Company
    • John S. Davis
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Coring device with an improved core sleeve and anti-gripping collar...
    • Patent number 4,566,545
    • Issue date Jan 28, 1986
    • Norton Christensen, Inc.
    • Arthur L. Story
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Externally powered core catcher
    • Patent number 4,552,229
    • Issue date Nov 12, 1985
    • Norton Christensen, Inc.
    • Steven R. Radford
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Multipurpose fluid flow assisted downhole tool
    • Patent number 4,296,822
    • Issue date Oct 27, 1981
    • Omega Tools International
    • Ronald D. Ormsby
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3540537
    • Patent number 3,540,537
    • Issue date Nov 17, 1970
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3428138
    • Patent number 3,428,138
    • Issue date Feb 18, 1969
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3340939
    • Patent number 3,340,939
    • Issue date Sep 12, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3328068
    • Patent number 3,328,068
    • Issue date Jun 27, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2708104
    • Patent number 2,708,104
    • Issue date May 10, 1955
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2671642
    • Patent number 2,671,642
    • Issue date Mar 9, 1954
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2668037
    • Patent number 2,668,037
    • Issue date Feb 2, 1954
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2621897
    • Patent number 2,621,897
    • Issue date Dec 16, 1952
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2522399
    • Patent number 2,522,399
    • Issue date Sep 12, 1950
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2503561
    • Patent number 2,503,561
    • Issue date Apr 11, 1950
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2499543
    • Patent number 2,499,543
    • Issue date Mar 7, 1950
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2205598
    • Patent number 2,205,598
    • Issue date Jun 25, 1940
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2090304
    • Patent number 2,090,304
    • Issue date Aug 17, 1937
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2014806
    • Patent number 2,014,806
    • Issue date Sep 17, 1935
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1825123
    • Patent number 1,825,123
    • Issue date Sep 29, 1931
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1765513
    • Patent number 1,765,513
    • Issue date Jun 24, 1930
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1756503
    • Patent number 1,756,503
    • Issue date Apr 29, 1930
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1720700
    • Patent number 1,720,700
    • Issue date Jul 16, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1654223
    • Patent number 1,654,223
    • Issue date Dec 27, 1927
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents