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Gas lift nozzle valve
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Patent number 9,879,509
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Issue date Jan 30, 2018
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Petroleo Brasileiro S.A. Petrobras
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Alcino Resende De Almeida
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E21 - EARTH DRILLING MINING
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Self-stabilizing gas lift valve
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Patent number 9,453,398
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Issue date Sep 27, 2016
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The University of Tulsa
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Hong-Quan Zhang
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Modular check valve system
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Patent number 9,429,956
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Issue date Aug 30, 2016
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Petrotechnologies, Inc.
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David Baer Levy
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Thermally-actuated gas lift safety valve
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Patent number 8,800,590
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Issue date Aug 12, 2014
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Massachusetts Institute of Technology
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Eric Wright Gilbertson
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Ball valve safety plug
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Patent number 8,695,622
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Issue date Apr 15, 2014
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Halliburton Energy Services, Inc.
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Peter Derek Walter Inglis
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F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
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Gas-lift valve and method of use
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Patent number 8,162,060
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Issue date Apr 24, 2012
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Eagle Gas Lift, LLC.
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Vic Arthur Randazzo
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Barrier orifice valve for gas lift
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Patent number 7,360,602
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Issue date Apr 22, 2008
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Baker Hughes Incorporated
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James H. Kritzler
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Gas turbine for oil lifting
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Patent number 7,278,489
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Issue date Oct 9, 2007
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Juraj Matic
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Mandrel for a gas lift valve
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Patent number 7,213,607
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Issue date May 8, 2007
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Petroleo Brasileiro S.A. Petrobras
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Alcino Resende De Almeida
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Marine riser tower
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Patent number 7,104,330
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Issue date Sep 12, 2006
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Stolt Offshore SA
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Jean-Luc Bernard Legras
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
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Gas flow control device
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Patent number 7,086,417
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Issue date Aug 8, 2006
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Petroleo Brasileiro S.A.-Petrobras
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Alcino Resende De Almeida
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Gas lift valve
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Patent number 6,932,581
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Issue date Aug 23, 2005
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Schlumberger Technology Corporation
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Tyson R. Messick
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F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
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Flow control device
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Patent number 6,810,906
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Issue date Nov 2, 2004
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Mitsubishi Heavy Industries, Ltd.
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Satoshi Tanaka
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G05 - CONTROLLING REGULATING
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Gas lift mandrel
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Patent number 6,810,955
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Issue date Nov 2, 2004
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Baker Hughes Incorporated
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Brian A. Roth
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Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC