Underdown; David R.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Underdown; David R..The latest application filed is for "flow induced electrostatic power generator for tubular segments".

Company Profile

0.13.14

Underdown; David R. - Houston TX
Underdown; David R. - Conroe TX
Underdown; David R. - Plano TX
Underdown; David R. - Alvin TX

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Flow induced electrostatic power generator for tubular segments Grant 9,685,890 - Tosi , et al. June 20, 2	2017-06-20
Flow induced electrostatic power generator for tubular segments Grant 9,556,712 - Tosi , et al. January 31, 2	2017-01-31
Flow Induced Electrostatic Power Generator For Tubular Segments App 20140210307 - Tosi; Luis Phillipe Ferreira Costa ; et al.	2014-07-31
Flow Induced Electrostatic Power Generator For Tubular Segments App 20140202705 - Tosi; Luis Phillipe Costa Ferreira ; et al.	2014-07-24
Flow-induced electrostatic power generator for downhole use in oil and gas wells Grant 8,714,239 - Tosi , et al. May 6, 2	2014-05-06
Flow-induced electrostatic power generator for downhole use in oil and gas wells Grant 8,511,373 - Tosi , et al. August 20, 2	2013-08-20
System And Method Of Perforating A Well And Preparing A Perforating Fluid For The Same App 20130087336 - Underdown; David R.	2013-04-11
Flow-induced Electrostatic Power Generator For Downhole Use In Oil And Gas Wells App 20120273235 - TOSI; Luis Phillipe ; et al.	2012-11-01
Flow-induced Electrostatic Power Generator For Downhole Use In Oil And Gas Wells App 20120273234 - TOSI; Luis Phillipe ; et al.	2012-11-01
Method and system for regeneration of a membrane used to separate fluids in a wellbore App 20030079876 - Underdown, David R.	2003-05-01
Method and system utilizing gravity and membranes to separate water and oil in a horizontal wellbore App 20030080061 - Underdown, David R. ; et al.	2003-05-01
Method of maintaining water volume in an oil strata of an oil production reservoir App 20030037923 - Emanuele, Mark A. ; et al.	2003-02-27
Sub-sea membrane separation system with temperature control Grant 6,502,635 - Underdown , et al. January 7, 2	2003-01-07
Sub-sea Membrane Separation System With Temperature Control App 20020195251 - Underdown, David R. ; et al.	2002-12-26
System and method for separation of hydrocarbons and contaminants using redundant membrane separators App 20020195250 - Underdown, David R. ; et al.	2002-12-26
Method and system for oil and water separation utilizing a hydrostatic pressure head for disposal of water App 20020189807 - Emanuele, Mark A. ; et al.	2002-12-19
Method and apparatus for wellbore gas separation Grant 6,454,836 - Koelmel , et al. September 24, 2	2002-09-24
Method for preventing metal carbonate scale formation in a well penetrating a subterranean formation Grant 5,171,460 - Underdown December 15, 1	1992-12-15
Proppant charge and method Grant 4,664,819 - Glaze , et al. * May 12, 1	1987-05-12
Squeeze cement method using coiled tubing Grant 4,627,496 - Ashford , et al. December 9, 1	1986-12-09
Proppant charge and method Grant 4,564,459 - Underdown , et al. January 14, 1	1986-01-14
Proppant charge and method Grant 4,443,347 - Underdown , et al. April 17, 1	1984-04-17

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