TREA

F. Harold Hollister

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    BOP operating system with quick dump valve
    • Patent number 6,779,543
    • Issue date Aug 24, 2004
    • Gilmore Valve Co., Ltd.
    • F. Harold Hollister
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    BOP operating system with quick dump valve
    • Patent number 6,655,405
    • Issue date Dec 2, 2003
    • Cilmore Valve Co.
    • F. Harold Hollister
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Relief valve
    • Patent number 6,651,696
    • Issue date Nov 25, 2003
    • Gilmore Valve Co., Ltd.
    • Rodney C. Hope
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Low interflow hydraulic shuttle valve
    • Patent number 6,318,400
    • Issue date Nov 20, 2001
    • Gilmore Valve Company
    • Rodney C. Hope
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Pressure biased shuttle valve
    • Patent number 6,257,268
    • Issue date Jul 10, 2001
    • Gilmore Valve Company
    • Rodney C. Hope
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Hydraulic holddown screw with mechanical retention means
    • Patent number 4,650,225
    • Issue date Mar 17, 1987
    • Joy Manufacturing Company
    • Tri C. Le
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    High pressure sealing connection with metal seal
    • Patent number 4,575,106
    • Issue date Mar 11, 1986
    • Joy Manufacturing Company
    • F. Harold Hollister
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Dual diameter valve stem packing
    • Patent number 4,570,942
    • Issue date Feb 18, 1986
    • Joy Manufacturing Company
    • Robert J. Diehl
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valve with internal pressure relief means
    • Patent number 4,515,174
    • Issue date May 7, 1985
    • Joy Manufacturing Company
    • F. Harold Hollister
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    BOP OPERATING SYSTEM WITH QUICK DUMP VALVE
    • Publication number 20040107991
    • Publication date Jun 10, 2004
    • GILMORE VALVE CO., LTD.
    • F. Harold Hollister
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Relief valve
    • Publication number 20030051756
    • Publication date Mar 20, 2003
    • Rodney C. Hope
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    BOP operating system with quick dump valve
    • Publication number 20020100501
    • Publication date Aug 1, 2002
    • Gilmore Valve Co.
    • F. Harold Hollister
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC