TREA

Clarence W. Johnson

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  • Calgary, CA
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Patents Grantslast 30 patents

  • Information Patent Grant

    Wellhead safety valve control system
    • Patent number 6,412,510
    • Issue date Jul 2, 2002
    • Barber Industries, Inc.
    • Clarence William Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Wellhead safety valve control system
    • Patent number 6,116,268
    • Issue date Sep 12, 2000
    • Barber Industries Inc.
    • Clarence William Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Pump for pressurizing control system
    • Patent number 6,053,711
    • Issue date Apr 25, 2000
    • Barber Industries Inc.
    • Clarence William Johnson
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Pneumatic actuator assembly
    • Patent number 6,015,134
    • Issue date Jan 18, 2000
    • Barber Industries Inc.
    • Clarence William Johnson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Dump/stop valve for surface controlled subsurface safety valve
    • Patent number 5,971,353
    • Issue date Oct 26, 1999
    • Barber Industries, Inc.
    • Clarence William Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    High-low indicator
    • Patent number 5,590,685
    • Issue date Jan 7, 1997
    • Barber Industries, Ltd.
    • Clarence W. Johnson
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Safety valve actuator
    • Patent number 5,464,040
    • Issue date Nov 7, 1995
    • Barber Industries Ltd.
    • Clarence W. Johnson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Two line pilot valve
    • Patent number 5,341,837
    • Issue date Aug 30, 1994
    • Barber Industries Ltd.
    • Clarence W. Johnson
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Safety valve actuator assembly
    • Patent number 5,291,918
    • Issue date Mar 8, 1994
    • Barber Industries Ltd.
    • Clarence W. Johnson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Cushion connector
    • Patent number 5,224,898
    • Issue date Jul 6, 1993
    • Barber Industries Ltd.
    • Clarence W. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Safety valve actuator assembly
    • Patent number 5,070,900
    • Issue date Dec 10, 1991
    • Bralorne Resources Limited
    • Clarence W. Johnson
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Floating cushion sub
    • Patent number 4,759,738
    • Issue date Jul 26, 1988
    • Bralorne Resources Limited
    • Clarence W. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Mobile drilling apparatus
    • Patent number 4,703,812
    • Issue date Nov 3, 1987
    • Bralorne Resources Limited
    • Clarence W. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Wellhead sealing system
    • Patent number 4,593,914
    • Issue date Jun 10, 1986
    • Bralorne Resources Limited
    • Clarence W. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Casing hanger
    • Patent number 4,494,778
    • Issue date Jan 22, 1985
    • Bralorne Resources Limited
    • Clarence W. Johnson
    • E21 - EARTH DRILLING MINING