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Preston Fox
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The Woodlands, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Self-aligning pipe gripping assembly and method of making and using...
Patent number
10,081,110
Issue date
Sep 25, 2018
National-Oilwell Varco, L.P.
Preston R. Fox
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Self-aligning pipe gripping assembly and method of making and using...
Patent number
9,452,535
Issue date
Sep 27, 2016
National-Oilwell Varco, L.P.
Preston R. Fox
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Dual ball upper internal blow out preventer valve
Patent number
8,752,653
Issue date
Jun 17, 2014
National-Oilwell Varco, L.P.
Padmasiri Daya Seneviratne
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Top drive with shaft seal isolation
Patent number
7,748,445
Issue date
Jul 6, 2010
National-Oilwell Varco, L.P.
Lawrence Edward Wells
E21 - EARTH DRILLING MINING
Information
Patent Grant
Top drives with shaft multi-seal
Patent number
7,748,473
Issue date
Jul 6, 2010
National-Oilwell Varco, L.P.
Lawrence E. Wells
E21 - EARTH DRILLING MINING
Information
Patent Grant
Top drive systems
Patent number
7,401,664
Issue date
Jul 22, 2008
Varco I/P
Lawrence E. Wells
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tubular-drill bit connect/disconnect apparatus
Patent number
7,313,986
Issue date
Jan 1, 2008
Varco I/P, Inc.
Neil Edward West
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tubular connect/disconnect apparatus
Patent number
7,188,547
Issue date
Mar 13, 2007
Varco I/P, Inc.
Neil Edward West
E21 - EARTH DRILLING MINING
Information
Patent Grant
Subsea intervention system, method and components thereof
Patent number
7,165,619
Issue date
Jan 23, 2007
Varco I/P, Inc.
Preston Fox
E21 - EARTH DRILLING MINING
Information
Patent Grant
Tubular connect/disconnect apparatus
Patent number
7,062,991
Issue date
Jun 20, 2006
Varco I/P, Inc.
Neil Edward West
E21 - EARTH DRILLING MINING
Information
Patent Grant
Pipe transfer system
Patent number
5,451,129
Issue date
Sep 19, 1995
Varco International, Inc.
George I. Boyadjieff
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Suspension of adjustable pipe spinner
Patent number
4,478,111
Issue date
Oct 23, 1984
Varco International, Inc.
Lawrence E. Wells
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
SELF-ALIGNING PIPE GRIPPING ASSEMBLY AND METHOD OF MAKING AND USING...
Publication number
20160354934
Publication date
Dec 8, 2016
National-Oilwell Varco, L.P.
Preston R. Fox
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Application
SELF-ALIGNING PIPE GRIPPING ASSEMBLY AND METHOD OF MAKING AND USING...
Publication number
20140353997
Publication date
Dec 4, 2014
Preston R. Fox
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Application
DUAL BALL UPPER INTERNAL BLOW OUT PREVENTER VALVE
Publication number
20110226485
Publication date
Sep 22, 2011
National-Oilwell Varco, L.P.
Padmasiri Daya Seneviratne
E21 - EARTH DRILLING MINING
Information
Patent Application
Top drives with shaft multi-seal
Publication number
20090044982
Publication date
Feb 19, 2009
Lawrence E. Wells
E21 - EARTH DRILLING MINING
Information
Patent Application
Top drive with shaft seal isolation
Publication number
20080210437
Publication date
Sep 4, 2008
Lawrence Edward Wells
E21 - EARTH DRILLING MINING
Information
Patent Application
Top drive systems
Publication number
20070251699
Publication date
Nov 1, 2007
Lawrence E. Wells
E21 - EARTH DRILLING MINING
Information
Patent Application
Tubular-drill bit connect/disconnect apparatus
Publication number
20070193417
Publication date
Aug 23, 2007
Neil Edward West
E21 - EARTH DRILLING MINING
Information
Patent Application
Subsea intervention system, method and components thereof
Publication number
20030178200
Publication date
Sep 25, 2003
Preston Fox
E21 - EARTH DRILLING MINING