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James D. Isenhour

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  • Windsor, CO, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Valve assembly
    • Patent number 10,161,530
    • Issue date Dec 25, 2018
    • Extreme Technologies, LLC
    • James D. Isenhour
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Method and apparatus for reaming well bore surfaces nearer the cent...
    • Patent number 9,739,092
    • Issue date Aug 22, 2017
    • Extreme Technologies, LLC
    • James D. Isenhour
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valve assembly
    • Patent number 9,410,637
    • Issue date Aug 9, 2016
    • Extreme Technologies, LLC
    • James D. Isenhour
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Wellbore conditioning system
    • Patent number 9,163,460
    • Issue date Oct 20, 2015
    • Extreme Technologies, LLC
    • James D. Isenhour
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Valve assembly
    • Patent number 9,010,370
    • Issue date Apr 21, 2015
    • Extreme Technologies, LLC
    • James D. Isenhour
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method and apparatus for reaming well bore surfaces nearer the cent...
    • Patent number 8,752,649
    • Issue date Jun 17, 2014
    • Hard Rock Solutions, Inc.
    • James D. Isenhour
    • E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents