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Alexander Craig Mackay

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  • Banchory, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual flow converted auto-fill float valve
    • Patent number 12,012,812
    • Issue date Jun 18, 2024
    • DOWNHOLE PRODUCTS LIMITED
    • Darko Arsoski
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Toe valve with vented atmospheric chamber
    • Patent number 11,920,432
    • Issue date Mar 5, 2024
    • DOWNHOLE PRODUCTS LIMITED
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Wellbore reamer
    • Patent number 11,788,360
    • Issue date Oct 17, 2023
    • ENGINEERING INNOVATION & DESIGN LIMITED
    • Alexander Craig MacKay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Resettable toe valve
    • Patent number 11,486,228
    • Issue date Nov 1, 2022
    • DOWNHOLE PRODUCTS LIMITED
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Overpressure toe valve with atmospheric chamber
    • Patent number 11,428,073
    • Issue date Aug 30, 2022
    • DOWNHOLE PRODUCTS LIMITED
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Slimline stop collar
    • Patent number 11,286,729
    • Issue date Mar 29, 2022
    • DOWNHOLE PRODUCTS LIMITED
    • Alexander Craig Mackay
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Guide shoe with lockable nose
    • Patent number 11,203,902
    • Issue date Dec 21, 2021
    • DOWNHOLE PRODUCTS LIMITED
    • Alexander Craig MacKay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Drilling and hole enlargement device
    • Patent number 7,757,787
    • Issue date Jul 20, 2010
    • Smith International, Inc.
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Completion apparatus and methods for use in wellbores
    • Patent number 7,481,272
    • Issue date Jan 27, 2009
    • Weatherford/Lamb, Inc.
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Centraliser
    • Patent number 7,377,325
    • Issue date May 27, 2008
    • Weatherford/Lamb, Inc.
    • Duncan James Trinder
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Seal arrangement
    • Patent number 7,370,708
    • Issue date May 13, 2008
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tubing seal
    • Patent number 7,367,404
    • Issue date May 6, 2008
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tubing expansion
    • Patent number 7,322,420
    • Issue date Jan 29, 2008
    • Weatherford/Lamb, Inc.
    • Duncan James Trinder
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Completion apparatus and methods for use in wellbores
    • Patent number 7,219,745
    • Issue date May 22, 2007
    • Weatherford/Lamb, Inc.
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Expanding tubing
    • Patent number 7,172,027
    • Issue date Feb 6, 2007
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tubing injector
    • Patent number 7,140,442
    • Issue date Nov 28, 2006
    • Weatherford/Lamb, Inc.
    • Alexander Craig MacKay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole cutting tool and method
    • Patent number 7,140,444
    • Issue date Nov 28, 2006
    • Weatherford/Lamb, Inc.
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tubing anchor
    • Patent number 7,090,024
    • Issue date Aug 15, 2006
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tubing anchor
    • Patent number 7,086,480
    • Issue date Aug 8, 2006
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Expansion method
    • Patent number 7,077,210
    • Issue date Jul 18, 2006
    • Weatherford/Lamb, Inc.
    • Alexander Craig MacKay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tubing injector
    • Patent number 7,073,602
    • Issue date Jul 11, 2006
    • Weatherford/Lamb
    • Neil Andrew Abercombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Completion apparatus and methods for use in wellbores
    • Patent number 6,971,450
    • Issue date Dec 6, 2005
    • Weatherford/Lamb, Inc.
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Expanding tubing
    • Patent number 6,896,052
    • Issue date May 24, 2005
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Auto reversing expanding roller system
    • Patent number 6,820,687
    • Issue date Nov 23, 2004
    • Weatherford/Lamb, Inc.
    • Patrick G. Maguire
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Completion apparatus and methods for use in wellbores
    • Patent number 6,655,459
    • Issue date Dec 2, 2003
    • Weatherford/Lamb, Inc.
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    RASPING SHOE FOR NON-ROTATIONAL DEPLOYMENT OF CASING STRING
    • Publication number 20240011359
    • Publication date Jan 11, 2024
    • DOWNHOLE PRODUCTS LIMITED
    • Douglas Farley
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    FLOAT EQUIPMENT FOR USE WITH COMPOSITE CASING OR LINER STRING
    • Publication number 20230399899
    • Publication date Dec 14, 2023
    • DOWNHOLE PRODUCTS LIMITED
    • ALEXANDER CRAIG MACKAY
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DUAL FLOW CONVERTED AUTO-FILL FLOAT VALVE
    • Publication number 20230069930
    • Publication date Mar 9, 2023
    • DOWNHOLE PRODUCTS LIMITED
    • Darko Arsoski
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TOE VALVE WITH VENTED ATMOSPHERIC CHAMBER
    • Publication number 20220364438
    • Publication date Nov 17, 2022
    • DOWNHOLE PRODUCTS LIMITED
    • ALEXANDER CRAIG MACKAY
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    OVERPRESSURE TOE VALVE WITH ATMOSPHERIC CHAMBER
    • Publication number 20210270107
    • Publication date Sep 2, 2021
    • DownHole Products Limited
    • ALEXANDER CRAIG MACKAY
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    GUIDE SHOE WITH LOCKABLE NOSE
    • Publication number 20210246730
    • Publication date Aug 12, 2021
    • Downhole Products Limited
    • Alexander Craig MACKAY
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Downhole Tool
    • Publication number 20210222499
    • Publication date Jul 22, 2021
    • Engineering Innovation & Design Limited
    • Alexander Craig MacKay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Wellbore Reamer
    • Publication number 20210189803
    • Publication date Jun 24, 2021
    • Engineering Innovation & Design Limited
    • Alexander Craig MacKay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DEPLOYABLE CASING CENTRALISER WITH LATCH FOR BOW SPRINGS
    • Publication number 20210025245
    • Publication date Jan 28, 2021
    • DOWNHOLE PRODUCTS LIMITED
    • ALEXANDER CRAIG MACKAY
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    RESETTABLE TOE VALVE
    • Publication number 20200408068
    • Publication date Dec 31, 2020
    • DOWNHOLE PRODUCTS LIMITED
    • ALEXANDER CRAIG MACKAY
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    SLIMLINE STOP COLLAR
    • Publication number 20200109607
    • Publication date Apr 9, 2020
    • DOWNHOLE PRODUCTS LIMITED
    • ALEXANDER CRAIG MACKAY
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    DRILLING AND HOLE ENLARGEMENT DEVICE
    • Publication number 20070163809
    • Publication date Jul 19, 2007
    • Smith International, Inc.
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Slip grip drilling tool
    • Publication number 20060219440
    • Publication date Oct 5, 2006
    • Technology Ventures International, Ltd.
    • Alexander Craig MacKay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Completion apparatus and methods for use in wellbores
    • Publication number 20060124319
    • Publication date Jun 15, 2006
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Centraliser
    • Publication number 20050183864
    • Publication date Aug 25, 2005
    • Duncan James Trinder
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Tubing seal
    • Publication number 20050127673
    • Publication date Jun 16, 2005
    • Neil Andrew Abercrombie Simpson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Seal arrangement
    • Publication number 20050057005
    • Publication date Mar 17, 2005
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Tubing injector
    • Publication number 20050039926
    • Publication date Feb 24, 2005
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Tubing expansion
    • Publication number 20040163823
    • Publication date Aug 26, 2004
    • Duncan James Trinder
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Downhole cutting tool and method
    • Publication number 20040134668
    • Publication date Jul 15, 2004
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Expanding tubing
    • Publication number 20040065445
    • Publication date Apr 8, 2004
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Completion apparatus and methods for use in wellbores
    • Publication number 20040065447
    • Publication date Apr 8, 2004
    • Weatherford/Lamb, Inc.
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Expansion method
    • Publication number 20040055754
    • Publication date Mar 25, 2004
    • Alexander Craig MacKay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Auto reversing expanding roller system
    • Publication number 20040040721
    • Publication date Mar 4, 2004
    • Patrick G. Maguire
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Tubing injector
    • Publication number 20040020661
    • Publication date Feb 5, 2004
    • Neil Andrew Abercombi Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Tubing anchor
    • Publication number 20030205388
    • Publication date Nov 6, 2003
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Tubing anchor
    • Publication number 20030205387
    • Publication date Nov 6, 2003
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Lubricant for use in a wellbore
    • Publication number 20030075340
    • Publication date Apr 24, 2003
    • Khai Tran
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Application

    Completion apparatus and methods for use in wellbores
    • Publication number 20030019639
    • Publication date Jan 30, 2003
    • Alexander Craig Mackay
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Expanding tubing
    • Publication number 20020189696
    • Publication date Dec 19, 2002
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING