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Patentes

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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US399990114 Nov 197328 Dic 1976Smith International, Inc.Progressive cavity transducer
US405916514 Jul 197622 Nov 1977Versatile fluid motor and pump
US41040094 Mar 19771 Ago 1978Societe Generale de Mecanique et de MetallurgieScrew pump stators
US438665411 May 19817 Jun 1983Hydraulically operated downhole oil well pump
US471882412 Sep 198412 Ene 1988Institut Francais du PetroleUsable device, in particular for the pumping of an extremely viscous fluid and/or containing a sizeable proportion of gas, particularly for petrol production
US48201359 Feb 198711 Abr 1989Shell Oil CompanyFluid driven pumping apparatus
US48280365 Ene 19879 May 1989Shell Oil CompanyApparatus and method for pumping well fluids
US495716115 May 198918 Sep 1990Institut Francais du PetroleDevice for pumping a fluid at the bottom of a well
US520929427 Sep 199111 May 1993Rotor placer for progressive cavity pump
US556243316 Dic 19948 Oct 1996Institut Francais Du PetrolePumping system comprising a high-capacity positive-displacement pump
US56200567 Jun 199515 Abr 1997Halliburton CompanyCoupling for a downhole tandem drilling motor
US580708721 Mar 199715 Sep 1998Tarby, Inc.Stator assembly for a progressing cavity pump
US69624896 Nov 20028 Nov 2005PCM PompesMoineau pumping device having a ball coupling
US790571420 Mar 200815 Mar 2011Kudu Industries, Inc.Progressing cavity pump assembly and method of operation