TREA

Maria R. Contreras

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Positive lock system
    • Patent number 9,725,969
    • Issue date Aug 8, 2017
    • Cameron International Corporation
    • Dennis P. Nguyen
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Straight-bore back pressure valve
    • Patent number 9,422,788
    • Issue date Aug 23, 2016
    • Cameron International Corporation
    • Dennis P. Nguyen
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Straight-bore back pressure valve
    • Patent number 8,636,058
    • Issue date Jan 28, 2014
    • Cameron International Corporation
    • Dennis P. Nguyen
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

  • Information Patent Application

    POSITIVE LOCK SYSTEM
    • Publication number 20160010404
    • Publication date Jan 14, 2016
    • Cameron International Corporation
    • Dennis P. Nguyen
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    STRAIGHT-BORE BACK PRESSURE VALVE
    • Publication number 20140182863
    • Publication date Jul 3, 2014
    • Cameron International Corporation
    • Dennis P. Nguyen
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    STRAIGHT-BORE BACK PRESSURE VALVE
    • Publication number 20110011575
    • Publication date Jan 20, 2011
    • Cameron International Corporation
    • Dennis P. Nguyen
    • E21 - EARTH DRILLING MINING