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Frank Harold Hollister
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Sugar Land, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Regulator having check valve manifold for use in subsea control cir...
Patent number
11,905,782
Issue date
Feb 20, 2024
National Coupling Company, Inc.
Chris Roy
E21 - EARTH DRILLING MINING
Information
Patent Grant
Subsea bop control system with dual-action check valve
Patent number
11,105,435
Issue date
Aug 31, 2021
National Coupling Company
Robert E. Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Pilot-actuated spool valve having rod retainer
Patent number
11,085,545
Issue date
Aug 10, 2021
National Coupling Company, Inc.
Max Stetzer
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Subsea BOP control system with dual-action check valve
Patent number
10,415,715
Issue date
Sep 17, 2019
National Coupling Company, Inc.
Robert E. Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Metal reinforced seal plate for pilot actuated spool valve
Patent number
10,288,184
Issue date
May 14, 2019
Hunting Energy Services, Inc.
Robert E. Smith
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Metal reinforced seal plate for pilot actuated spool valve
Patent number
10,247,322
Issue date
Apr 2, 2019
Hunting Energy Services, Inc.
Robert E. Smith
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Subsea BOP control system with dual-action check valve
Patent number
10,174,857
Issue date
Jan 8, 2019
National Coupling Company, Inc.
Robert E. Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Subsea BOP control system with dual-action check valve
Patent number
10,054,239
Issue date
Aug 21, 2018
National Coupling Company
Robert E. Smith
E21 - EARTH DRILLING MINING
Information
Patent Grant
Metal reinforced seal plate for pilot actuated spool valve
Patent number
9,822,895
Issue date
Nov 21, 2017
Hunting Energy Services, Inc.
Robert E. Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Subsea BOP control system with dual-action check valve
Patent number
9,810,336
Issue date
Nov 7, 2017
National Coupling Company
Robert E. Smith
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Regulator Having Check Valve Manifold for Use in Subsea Control Cir...
Publication number
20240125192
Publication date
Apr 18, 2024
National Coupling Company, Inc.
Chris ROY
E21 - EARTH DRILLING MINING
Information
Patent Application
Regulator Having Check Valve Manifold for Use in Subsea Control Cir...
Publication number
20230287753
Publication date
Sep 14, 2023
National Coupling Company, Inc.
Chris ROY
E21 - EARTH DRILLING MINING
Information
Patent Application
PILOT-ACTUATED SPOOL VALVE HAVING ROD RETAINER
Publication number
20200096114
Publication date
Mar 26, 2020
National Coupling Company, Inc.
Max Stetzer
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
SUBSEA BOP CONTROL SYSTEM WITH DUAL-ACTION CHECK VALVE
Publication number
20200080657
Publication date
Mar 12, 2020
National Coupling Company, Inc.
Robert E. Smith
E21 - EARTH DRILLING MINING
Information
Patent Application
SUBSEA BOP CONTROL SYSTEM WITH DUAL-ACTION CHECK VALVE
Publication number
20190113146
Publication date
Apr 18, 2019
National Coupling Company, Inc.
Robert E. Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
SUBSEA BOP CONTROL SYSTEM WITH DUAL-ACTION CHECK VALVE
Publication number
20180328510
Publication date
Nov 15, 2018
National Coupling Company, Inc.
Robert E. Smith
E21 - EARTH DRILLING MINING
Information
Patent Application
Subsea BOP Control System With Dual-Action Check Valve
Publication number
20180023716
Publication date
Jan 25, 2018
National Coupling Company, Inc.
Robert E. Smith
E21 - EARTH DRILLING MINING
Information
Patent Application
Metal Reinforced Seal Plate for Pilot Actuated Spool Valve
Publication number
20170261112
Publication date
Sep 14, 2017
HUNTING ENERGY SERVICES, INC.
Robert E. Smith
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Application
Metal Reinforced Seal Plate For Pilot Actuated Spood Valve
Publication number
20170138486
Publication date
May 18, 2017
NATIONAL COUPLING COMPANY
Robert E. Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Subsea BOP Control System With Dual- Action Check Valve
Publication number
20170102085
Publication date
Apr 13, 2017
National Coupling Company, Inc.
Robert E. Smith
E21 - EARTH DRILLING MINING
Information
Patent Application
Metal Reinforced Seal Plate for Pilot Actuated Spool Valve
Publication number
20160084396
Publication date
Mar 24, 2016
HUNTING ENERGY SERVICES, INC.
Robert E. Smith
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Application
Metal Reinforced Seal Plate for Pilot Actuated Spool Valve
Publication number
20130319557
Publication date
Dec 5, 2013
HUNTING ENERGY SERVICES, INC.
Robert E. Smith
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC