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John McCaskill
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Jersey Village, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
System for controlling wellbore pressure during pump shutdowns
Patent number
11,149,506
Issue date
Oct 19, 2021
Expro Americas, LLC
Danny Spencer
E21 - EARTH DRILLING MINING
Information
Patent Grant
Flow system for a hydraulic choke solids strainer
Patent number
7,360,611
Issue date
Apr 22, 2008
Expro Americas, L.P.
Donald Glynn Sims
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Solids strainer system for a hydraulic choke
Patent number
7,275,606
Issue date
Oct 2, 2007
Expro Americas, L.P.
Donald Glynn Sims
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Apparatus and methods for servicing a hydraulic choke
Patent number
7,231,932
Issue date
Jun 19, 2007
Power Well Services, L.P.
Robert F. Schmidt
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Manipulator system for servicing a hydraulic choke
Patent number
7,159,604
Issue date
Jan 9, 2007
Power Well Services, L.P.
David A. Schmidt
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Shear mechanism for backpressure relief in a choke valve
Patent number
7,124,770
Issue date
Oct 24, 2006
Power Well Services, L.P.
Robert F. Schmidt
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Modular actuator system for valves and chokes
Patent number
6,883,614
Issue date
Apr 26, 2005
Power Chokes
David A. Schmidt
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Information
Patent Application
A SYSTEM FOR CONTROLLING WELLBORE PRESSURE DURING PUMP SHUTDOWNS
Publication number
20170089156
Publication date
Mar 30, 2017
Power Chokes
Danny Spencer
E21 - EARTH DRILLING MINING
Information
Patent Application
Flow system for a hydraulic choke solids Strainer
Publication number
20070221413
Publication date
Sep 27, 2007
Expro Americas, L.P.
Donald Glynn Sims
E21 - EARTH DRILLING MINING
Information
Patent Application
Solids strainer system for a hydraulic choke
Publication number
20070215387
Publication date
Sep 20, 2007
Expro Americas, L.P.
Donald Glynn Sims
E21 - EARTH DRILLING MINING
Information
Patent Application
Manipulator system for servicing a hydraulic choke
Publication number
20070051407
Publication date
Mar 8, 2007
Power Well Services, L.P.
David A. Schmidt
E21 - EARTH DRILLING MINING
Information
Patent Application
Manipulator system for servicing a hydraulic choke
Publication number
20050236046
Publication date
Oct 27, 2005
Power Chokes, L.P.
David A. Schmidt
E21 - EARTH DRILLING MINING
Information
Patent Application
Well pressure control system
Publication number
20050092523
Publication date
May 5, 2005
Power Chokes, L.P.
John Walton McCaskill
E21 - EARTH DRILLING MINING
Information
Patent Application
Shear mechanism for backpressure relief in a choke valve
Publication number
20050072464
Publication date
Apr 7, 2005
Power Chokes, L.P.
Robert F. Schmidt
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Modular actuator system for valves and chokes
Publication number
20040216888
Publication date
Nov 4, 2004
Power Chokes, L.P.
David A. Schmidt
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Solids separation system for well flowback
Publication number
20040217050
Publication date
Nov 4, 2004
Power Chokes, L.P.
David A. Schmidt
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL