TREA

Roller core bits

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Industry

  • CPC
  • E21B10/06
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21BEARTH DRILLING E21B10/00Drill bits

Current Industry

E21B10/06Roller core bits
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Downhole tools with variable cutting element arrays
    • Patent number 11,136,830
    • Issue date Oct 5, 2021
    • Schlumberger Technology Corporation
    • Scott D. McDonough
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Rotary drilling tool and method for producing a bore in the ground
    • Patent number 10,927,624
    • Issue date Feb 23, 2021
    • Bauer Maschinen GmbH
    • Sebastian Bauer
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drill bits with anti-tracking features
    • Patent number 9,657,527
    • Issue date May 23, 2017
    • Baker Hughes Incorporated
    • Robert J. Buske
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roller cone disk with shaped compacts
    • Patent number 8,307,920
    • Issue date Nov 13, 2012
    • Baker Hughes Incorporated
    • Robert J. Buske
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling tool for the air-lifting process
    • Patent number 6,405,812
    • Issue date Jun 18, 2002
    • Wirth Maschinen-und Bohrgerate-Fabrik GmbH
    • Fritz Tibussek
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Rotary cone drill bit with truncated rolling cone cutters and dome...
    • Patent number 5,695,019
    • Issue date Dec 9, 1997
    • Dresser Industries, Inc.
    • James M. Shamburger
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roller cone core bit
    • Patent number 5,454,437
    • Issue date Oct 3, 1995
    • Rock Bit International, Inc.
    • Roy D. Estes
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Core cutting rock bit
    • Patent number 5,394,952
    • Issue date Mar 7, 1995
    • Smith International, Inc.
    • Roger P. Johns
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Means of mounting a revolving cutting element
    • Patent number 5,352,045
    • Issue date Oct 4, 1994
    • The Integrated Bearing Co. Ltd.
    • Ronald Bennett
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Roller cone core bit with spiral stabilizers
    • Patent number 5,289,889
    • Issue date Mar 1, 1994
    • Marvin Gearhart
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling apparatus of the cutting and shearing type
    • Patent number 5,220,966
    • Issue date Jun 22, 1993
    • Wave Tec G.m.b.H.
    • Wsewolod S. Awdujewski
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Disc drill bit
    • Patent number 5,147,000
    • Issue date Sep 15, 1992
    • Norvic S.A.
    • Oscar Kaalstad
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling device
    • Patent number 4,549,614
    • Issue date Oct 29, 1985
    • Engtech SA
    • Oscar W. Kaalstad
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling device
    • Patent number 4,526,242
    • Issue date Jul 2, 1985
    • Hochstrasser geb. Wack; Elisabeth
    • Hans Mathieu
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Boring apparatus
    • Patent number 4,470,470
    • Issue date Sep 11, 1984
    • Sumitomo Metal Mining Company Limited
    • Sho Takano
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Nutating drill bit
    • Patent number 4,168,755
    • Issue date Sep 25, 1979
    • Walker-Neer Manufacturing Co.
    • Clyde A. Willis
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Diamond cutter rock bit with penetration limiting
    • Patent number 4,006,788
    • Issue date Feb 8, 1977
    • Smith International, Inc.
    • Lloyd L. Garner
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Boring apparatus provided with drill bits freely rotatable around t...
    • Patent number 3,945,445
    • Issue date Mar 23, 1976
    • Tone Boring Company Limited
    • Nobuhisa Ikeda
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3887236
    • Patent number 3,887,236
    • Issue date Jun 3, 1975
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3391751
    • Patent number 3,391,751
    • Issue date Jul 9, 1968
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    3356167
    • Patent number 3,356,167
    • Issue date Dec 5, 1967
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3174564
    • Patent number 3,174,564
    • Issue date Mar 23, 1965
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3134447
    • Patent number 3,134,447
    • Issue date May 26, 1964
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    3032130
    • Patent number 3,032,130
    • Issue date May 1, 1962
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2951683
    • Patent number 2,951,683
    • Issue date Sep 6, 1960
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    2894727
    • Patent number 2,894,727
    • Issue date Jul 14, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2893696
    • Patent number 2,893,696
    • Issue date Jul 7, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2704655
    • Patent number 2,704,655
    • Issue date Mar 22, 1955
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2634956
    • Patent number 2,634,956
    • Issue date Apr 14, 1953
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2621026
    • Patent number 2,621,026
    • Issue date Dec 9, 1952
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents