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David John Koester

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  • Marshalltown, IA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Flexible seals for process control valves
    • Patent number 9,587,747
    • Issue date Mar 7, 2017
    • Fisher Controls International LLC
    • Wade Jonathon Helfer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluid valve apparatus having enclosed seals
    • Patent number 9,400,061
    • Issue date Jul 26, 2016
    • Fisher Controls International LLC
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Flexible seals for process control valves
    • Patent number 9,127,775
    • Issue date Sep 8, 2015
    • Fisher Controls International LLC
    • Wade Jonathon Helfer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Flexible seals for process control valves
    • Patent number 8,286,938
    • Issue date Oct 16, 2012
    • Fisher Controls International LLC
    • Wade Jonathon Helfer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Packing nut for control valve
    • Patent number 7,980,530
    • Issue date Jul 19, 2011
    • Fisher Controls International LLC
    • Lynn Dean Mahncke
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluid flow control valve with high temperature bi-directional shutoff
    • Patent number 7,484,710
    • Issue date Feb 3, 2009
    • Fisher Controls International LLC
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Universal fluid valve body
    • Patent number 7,469,708
    • Issue date Dec 30, 2008
    • Fisher Controls International LLC
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Integrated post-guided seat ring assembly
    • Patent number 7,077,384
    • Issue date Jul 18, 2006
    • Fisher Controls International LLC
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluid flow control valve with bi-directional shutoff
    • Patent number 6,974,121
    • Issue date Dec 13, 2005
    • Fisher Controls International, Inc.
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluid pressure reduction device
    • Patent number 5,941,281
    • Issue date Aug 24, 1999
    • Fisher Controls International, Inc.
    • Hans D. Baumann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Fluid pressure reduction device
    • Patent number 5,769,122
    • Issue date Jun 23, 1998
    • Fisher Controls International, Inc.
    • Hans D. Baumann
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    FLUID VALVE APPARATUS HAVING ENCLOSED SEALS
    • Publication number 20160238149
    • Publication date Aug 18, 2016
    • FISHER CONTROLS INTERNATIONAL LLC
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FLEXIBLE SEALS FOR PROCESS CONTROL VALVES
    • Publication number 20150369371
    • Publication date Dec 24, 2015
    • FISHER CONTROLS INTERNATIONAL LLC
    • Wade Jonathon Helfer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Interlocking Spring Seat Assembly and Rotary Control Valve Comprisi...
    • Publication number 20150102246
    • Publication date Apr 16, 2015
    • FISHER CONTROLS INTERNATIONAL LLC
    • Bryan Q. Leger
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FLUID VALVE APPARATUS HAVING ENCLOSED SEALS
    • Publication number 20150028242
    • Publication date Jan 29, 2015
    • FISHER CONTROLS INTERNATIONAL LLC
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FLEXIBLE SEALS FOR PROCESS CONTROL VALVES
    • Publication number 20120319022
    • Publication date Dec 20, 2012
    • Wade Jonathon Helfer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Rotary Actuator Lever with Locking Device
    • Publication number 20090020167
    • Publication date Jan 22, 2009
    • David J. Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    FLEXIBLE SEATS FOR PROCESS CONTROL VALVES
    • Publication number 20070215834
    • Publication date Sep 20, 2007
    • Wade Jonathan Helfer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Flexible seals for process control valves
    • Publication number 20070138429
    • Publication date Jun 21, 2007
    • Wilbur Dean Hutchens
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Packing nut for control valve
    • Publication number 20070040141
    • Publication date Feb 22, 2007
    • FISHER CONTROLS INTERNATIONAL LLC
    • Lynn D. Mahncke
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Universal fluid valve body
    • Publication number 20060130899
    • Publication date Jun 22, 2006
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid flow control valve with high temperature bi-directional shutoff
    • Publication number 20050211942
    • Publication date Sep 29, 2005
    • FISHER CONTROLS INTERNATIONAL LLC
    • David J. Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Integrated post-guided seat ring assembly
    • Publication number 20050151109
    • Publication date Jul 14, 2005
    • FISHER CONTROLS INTERNATIONAL LLC
    • David J. Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Fluid flow control valve with bi-directional shutoff
    • Publication number 20030178595
    • Publication date Sep 25, 2003
    • David John Koester
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...