TREA

John W. Roff Jr.

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  • Conroe, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Two for one shale shaker
    • Patent number 5,593,582
    • Issue date Jan 14, 1997
    • John W. Roff
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Closed loop system and method of processing cuttings
    • Patent number 5,454,957
    • Issue date Oct 3, 1995
    • John W. Roff
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Barite scrubber mud tank
    • Patent number 5,382,091
    • Issue date Jan 17, 1995
    • John W. Roff
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL