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Randy L. Hall

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  • Marshalltown, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Control valve flow adjustment device
    • Patent number 6,905,108
    • Issue date Jun 14, 2005
    • Fisher Controls International LLC
    • Randy J. Hall
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Grant

    Replaceable valve seat ring with enhanced flow design
    • Patent number 6,889,702
    • Issue date May 10, 2005
    • Fisher Controls International LLC
    • Randy J. Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Variable port valve plug
    • Patent number 6,769,666
    • Issue date Aug 3, 2004
    • Fisher Controls International LLC
    • Randy J. Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Replaceable valve seat ring with enhanced flow design
    • Patent number 6,698,449
    • Issue date Mar 2, 2004
    • Fisher Controls International LLC
    • Randy J. Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Control valve pressure bleed inspection port
    • Patent number 6,695,000
    • Issue date Feb 24, 2004
    • Fisher Controls International LLC
    • Randy Jerold Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve actuator with instrument mounting manifold
    • Patent number 5,853,022
    • Issue date Dec 29, 1998
    • Fisher Controls International, Inc.
    • Philip Wayne Eggleston
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Valve actuator
    • Patent number D363761
    • Issue date Oct 31, 1995
    • Fisher Controls International, Inc.
    • Philip W. Eggleston
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Trim for ANSI class V shut off of valves
    • Patent number 5,236,014
    • Issue date Aug 17, 1993
    • Fisher Controls International, Inc.
    • Melvin L. Buls
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Diaphragm stem seal attachment
    • Patent number 5,029,813
    • Issue date Jul 9, 1991
    • Fisher Controls International, Inc.
    • Herbert H. Walton
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    Replaceable valve seat ring with enhanced flow design
    • Publication number 20040168721
    • Publication date Sep 2, 2004
    • Fisher Controls International LLC
    • Randy J. Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Replaceable valve seat ring with enhanced flow design
    • Publication number 20030089398
    • Publication date May 15, 2003
    • Randy J. Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Control valve flow adjustment device
    • Publication number 20030089867
    • Publication date May 15, 2003
    • Randy J. Hall
    • F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
  • Information Patent Application

    Control valve stem split guide bushing
    • Publication number 20030089875
    • Publication date May 15, 2003
    • Randy Jerold Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Variable port valve plug
    • Publication number 20030089869
    • Publication date May 15, 2003
    • Randy J. Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Control valve pressure bleed inspection port
    • Publication number 20030089408
    • Publication date May 15, 2003
    • Randy Jerold Hall
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...