TREA

Don B. Wafer

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  • Spring, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Dual metal seal for wellhead housing
    • Patent number 6,007,111
    • Issue date Dec 28, 1999
    • FMC Corporation
    • Don B. Wafer
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Tool protection guide
    • Patent number 5,896,925
    • Issue date Apr 27, 1999
    • FMC Corporation
    • Gerald Brian Swagerty
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Secondary seal bypass valve for gate valves
    • Patent number 5,732,731
    • Issue date Mar 31, 1998
    • FMC Corporation
    • Don B. Wafer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Tool protection guide with energy absorbing bumper
    • Patent number 5,730,218
    • Issue date Mar 24, 1998
    • FMC Corporation
    • Gerald Brian Swagerty
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Handle with modular hub
    • Patent number 5,511,286
    • Issue date Apr 30, 1996
    • FMC Corporation
    • Michael R. Williams
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Handle
    • Patent number 5,404,615
    • Issue date Apr 11, 1995
    • FMC Corporation
    • Don B. Wafer
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Selective double backseat for valve stems
    • Patent number 5,221,063
    • Issue date Jun 22, 1993
    • FMC Corporation
    • Don B. Wafer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pressure energized/pressure intensified casing seal
    • Patent number 4,848,777
    • Issue date Jul 18, 1989
    • FMC Corporation
    • David A. Zollo
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Uni-directional/bi-directional gate valve
    • Patent number 4,711,262
    • Issue date Dec 8, 1987
    • FMC Corporation
    • Don B. Wafer
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...