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David S. Grant

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  • Aberdeen, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 12,018,546
    • Issue date Jun 25, 2024
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 12,018,547
    • Issue date Jun 25, 2024
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 12,012,825
    • Issue date Jun 18, 2024
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 12,006,790
    • Issue date Jun 11, 2024
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 11,946,339
    • Issue date Apr 2, 2024
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 11,939,839
    • Issue date Mar 26, 2024
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 11,920,433
    • Issue date Mar 5, 2024
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 11,920,434
    • Issue date Mar 5, 2024
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 11,828,134
    • Issue date Nov 28, 2023
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus
    • Patent number 11,215,037
    • Issue date Jan 4, 2022
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus with a valve arrangement
    • Patent number 10,975,660
    • Issue date Apr 13, 2021
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus for disrupting filter cake
    • Patent number 10,718,183
    • Issue date Jul 21, 2020
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus
    • Patent number 10,613,691
    • Issue date Apr 7, 2020
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus
    • Patent number 10,400,553
    • Issue date Sep 3, 2019
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole method and apparatus
    • Patent number 10,337,297
    • Issue date Jul 2, 2019
    • HALLIBURTON MANUFACTURING AND SERVICES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole apparatus
    • Patent number 9,851,852
    • Issue date Dec 26, 2017
    • DARCY TECHNOLOGIES LIMITED
    • Stephen Edmund Bruce
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Downhole method and apparatus
    • Patent number 9,708,893
    • Issue date Jul 18, 2017
    • DARCY TECHNOLOGIES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Downhole method and apparatus
    • Patent number 9,353,606
    • Issue date May 31, 2016
    • Darcy Technologies Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method and apparatus for isolating tubing with a swellable seal
    • Patent number 8,863,854
    • Issue date Oct 21, 2014
    • Weatherford/Lamb, Inc.
    • Colin Jones
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Method and apparatus for isolating tubing with a swellable seal
    • Patent number 8,336,618
    • Issue date Dec 25, 2012
    • Weatherford/Lamb, Inc.
    • Colin Jones
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Tubing expansion
    • Patent number 8,075,813
    • Issue date Dec 13, 2011
    • Weatherford/Lamb, Inc.
    • David Stephenson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tubing expansion
    • Patent number 7,144,243
    • Issue date Dec 5, 2006
    • Weatherford/Lamb, Inc.
    • David Stephenson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    Tubing expansion with an apparatus that cycles between different di...
    • Patent number 7,063,149
    • Issue date Jun 20, 2006
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tubing expansion
    • Patent number 6,695,065
    • Issue date Feb 24, 2004
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230135540
    • Publication date May 4, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230118919
    • Publication date Apr 20, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230116709
    • Publication date Apr 13, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230112439
    • Publication date Apr 13, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230116905
    • Publication date Apr 13, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230113639
    • Publication date Apr 13, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230110319
    • Publication date Apr 13, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230114574
    • Publication date Apr 13, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230111890
    • Publication date Apr 13, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20230108002
    • Publication date Apr 6, 2023
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20210198978
    • Publication date Jul 1, 2021
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS
    • Publication number 20200011161
    • Publication date Jan 9, 2020
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS WITH A VALVE ARRANGEMENT
    • Publication number 20190178054
    • Publication date Jun 13, 2019
    • Halliburton Manufacturing and Services Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Downhole Apparatus
    • Publication number 20180081468
    • Publication date Mar 22, 2018
    • DARCY TECHNOLOGIES LIMITED
    • Stephen Edmund Bruce
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Application

    Downhole Method and Apparatus
    • Publication number 20170314370
    • Publication date Nov 2, 2017
    • DARCY TECHNOLOGIES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS
    • Publication number 20160326840
    • Publication date Nov 10, 2016
    • Darcy Technologies Limited
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS
    • Publication number 20160326849
    • Publication date Nov 10, 2016
    • DARCY TECHNOLOGIES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Downhole Method and Apparatus
    • Publication number 20160281474
    • Publication date Sep 29, 2016
    • DARCY TECHNOLOGIES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    DOWNHOLE APPARATUS
    • Publication number 20150027726
    • Publication date Jan 29, 2015
    • DARCY TECHNOLOGIES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Downhole Method and Apparatus
    • Publication number 20130341005
    • Publication date Dec 26, 2013
    • DARCY TECHNOLOGIES LIMITED
    • Stephen Edmund Bruce
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    ISOLATING TUBING
    • Publication number 20130180094
    • Publication date Jul 18, 2013
    • WEATHERFORD/LAMB, INC.
    • Colin Jones
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TUBING EXPANSION
    • Publication number 20120181732
    • Publication date Jul 19, 2012
    • David Stephenson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    ISOLATING TUBING
    • Publication number 20090159293
    • Publication date Jun 25, 2009
    • Colin Jones
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    TUBING EXPANSION
    • Publication number 20070107195
    • Publication date May 17, 2007
    • David Stephenson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Tubing expansion
    • Publication number 20040154808
    • Publication date Aug 12, 2004
    • Weatherford/Lamb, Inc.
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Tubing expansion
    • Publication number 20030127774
    • Publication date Jul 10, 2003
    • Weatherford/Lamb, Inc.
    • David Stephenson
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    Tubing expansion
    • Publication number 20030051885
    • Publication date Mar 20, 2003
    • Neil Andrew Abercrombie Simpson
    • E21 - EARTH DRILLING MINING