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Clifton D. Eggleston
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McAlester, OK, US
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Patents Grants
last 30 patents
Information
Patent Grant
Variable blowout preventer apparatus and method
Patent number
11,608,702
Issue date
Mar 21, 2023
National-Oilwell Varco, L.P.
Randall Ferrain Weaver
E21 - EARTH DRILLING MINING
Information
Patent Grant
Blowout preventer testing apparatus and method
Patent number
11,603,730
Issue date
Mar 14, 2023
National-Oilwell Varco, L.P.
Randall Ferrain Weaver
E21 - EARTH DRILLING MINING
Information
Patent Grant
Fluid separation apparatus and system
Patent number
10,737,283
Issue date
Aug 11, 2020
National-Oilwell Varco, L.P.
Randall Ferrain Weaver
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Wiper seal assemblies for a reciprocating pump and methods relating...
Patent number
9,670,923
Issue date
Jun 6, 2017
National-Oilwell Varco, L.P.
Randall Ferrain Weaver
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Replaceable sleeve for a cylinder liner
Patent number
8,534,184
Issue date
Sep 17, 2013
National-Oilwell Varco, L.P.
Andrew Dale Riley
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Patents Applications
last 30 patents
Information
Patent Application
VARIABLE BLOWOUT PREVENTER APPARATUS AND METHOD
Publication number
20220010646
Publication date
Jan 13, 2022
National-Oilwell Varco, L.P.
Randall Ferrain Weaver
E21 - EARTH DRILLING MINING
Information
Patent Application
BLOWOUT PREVENTER TESTING APPARATUS AND METHOD
Publication number
20210301619
Publication date
Sep 30, 2021
National-Oilwell Varco, L.P.
Randall Ferrain Weaver
E21 - EARTH DRILLING MINING
Information
Patent Application
FLUID SEPARATION APPARATUS AND SYSTEM
Publication number
20190262844
Publication date
Aug 29, 2019
National-Oilwell Varco, L.P.
Randall Ferrain Weaver
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
WIPER SEAL ASSEMBLIES FOR A RECIPROCATING PUMP AND METHODS RELATING...
Publication number
20160131131
Publication date
May 12, 2016
National-Oilwell Varco, L.P.
Randall Ferrain Weaver
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information
Patent Application
REPLACEABLE SLEEVE FOR A CYLINDER LINER
Publication number
20100139928
Publication date
Jun 10, 2010
National-Oilwell Varco, L.P.
Andrew Dale Riley
F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...