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David W. Hughes
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Houston, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Downhole tool with tethered ball
Patent number
10,801,298
Issue date
Oct 13, 2020
The WellBoss Company, LLC
David Hughes
E21 - EARTH DRILLING MINING
Information
Patent Grant
Downhole tool and methods of use
Patent number
10,633,534
Issue date
Apr 28, 2020
The WellBoss Company, LLC
Evan Lloyd Davies
E21 - EARTH DRILLING MINING
Information
Patent Grant
One-piece slip
Patent number
D877216
Issue date
Mar 3, 2020
The WellBoss Company, LLC
Evan Lloyd Davies
D15 - Machines not elsewhere specified
Information
Patent Grant
One-piece slip
Patent number
D877217
Issue date
Mar 3, 2020
The WellBoss Company, LLC
Evan Lloyd Davies
D15 - Machines not elsewhere specified
Information
Patent Grant
Subsea control pod valve assembly
Patent number
4,637,419
Issue date
Jan 20, 1987
Vetco Offshore, Inc.
David W. Hughes
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Misalignment tieback tool - non-rotating casing
Patent number
4,613,162
Issue date
Sep 23, 1986
Vetco Offshore Industries, Inc.
David W. Hughes
E21 - EARTH DRILLING MINING
Information
Patent Grant
Misalignment tieback tool - rotating casing
Patent number
4,613,164
Issue date
Sep 23, 1986
Vetco Offshore Industries, Inc.
David W. Hughes
E21 - EARTH DRILLING MINING
Information
Patent Grant
Misalignment tieback tool - swivel connection
Patent number
4,611,829
Issue date
Sep 16, 1986
Vetco Offshore Industries, Inc.
David W. Hughes
E21 - EARTH DRILLING MINING
Information
Patent Grant
Connector, ratcheting type
Patent number
4,607,865
Issue date
Aug 26, 1986
Vetco Offshore Industries, Inc.
David W. Hughes
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
DOWNHOLE TOOL WITH TETHERED BALL
Publication number
20190323314
Publication date
Oct 24, 2019
Downhole Technology, LLC
David Hughes
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE TOOL WITH BOTTOM COMPOSITE SLIP
Publication number
20190316434
Publication date
Oct 17, 2019
Downhole Technology, LLC
Evan Lloyd Davies
E21 - EARTH DRILLING MINING
Information
Patent Application
COMPOSITION OF MATTER AND USE THEREOF
Publication number
20180142096
Publication date
May 24, 2018
Downhole Technology, LLC
Liguo Li
E21 - EARTH DRILLING MINING
Information
Patent Application
DOWNHOLE TOOL AND METHOD OF USE
Publication number
20180038191
Publication date
Feb 8, 2018
Downhole Technology, LLC
Evan Lloyd Davies
E21 - EARTH DRILLING MINING