TREA

John P. Oliver

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ball valve
    • Patent number 4,911,409
    • Issue date Mar 27, 1990
    • Mogas Industries, Inc.
    • John P. Oliver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Bi-directional sealing valve
    • Patent number 4,890,643
    • Issue date Jan 2, 1990
    • Mogas Industries, Inc.
    • John P. Oliver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Ball valve
    • Patent number 4,887,794
    • Issue date Dec 19, 1989
    • Mogas Industries, Inc.
    • John P. Oliver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gate valves
    • Patent number 4,651,973
    • Issue date Mar 24, 1987
    • John P. Oliver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Downstream sealing device
    • Patent number 4,577,834
    • Issue date Mar 25, 1986
    • John P. Oliver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Method of manufacturing a gate valve body
    • Patent number 4,443,920
    • Issue date Apr 24, 1984
    • John P. Oliver
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Ball joint
    • Patent number 3,977,707
    • Issue date Aug 31, 1976
    • Cameron Iron Works, Inc.
    • John P. Oliver
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...