TREA

Dale V. Johnson

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  • Jefferson Parish, LA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Chemical injection valve
    • Patent number 5,004,007
    • Issue date Apr 2, 1991
    • Exxon Production Research Company
    • Dale V. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Heave compensated stabbing and landing tool
    • Patent number 4,858,694
    • Issue date Aug 22, 1989
    • Exxon Production Research Company
    • Dale V. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Injection mandrel
    • Patent number H635
    • Issue date Jun 6, 1989
    • Dale V. Johnson
    • 166 - Wells
  • Information Patent Grant

    Metal seal tubing plug
    • Patent number 4,651,818
    • Issue date Mar 24, 1987
    • Exxon Production Research Co.
    • Dale V. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Annular gas trap
    • Patent number 4,615,387
    • Issue date Oct 7, 1986
    • Exxon Production Research Co.
    • Dale V. Johnson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Depth measurements
    • Patent number 4,321,751
    • Issue date Mar 30, 1982
    • Exxon Production Research Company
    • Dale V. Johnson
    • G01 - MEASURING TESTING