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Darryl K. Mackie
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Houston, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Electric ball valve mechanism
Patent number
11,867,022
Issue date
Jan 9, 2024
Halliburton Energy Services, Inc.
Adam Davis Wright
E21 - EARTH DRILLING MINING
Information
Patent Grant
Annulus access valve
Patent number
10,450,836
Issue date
Oct 22, 2019
Halliburton Energy Services, Inc.
Darryl Kenneth Mackie
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus and method for separating a tubular string from a subsea...
Patent number
8,393,397
Issue date
Mar 12, 2013
Halliburton Energy Services, Inc.
Ross John Trewhella
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
ELECTRIC BALL VALVE MECHANISM
Publication number
20220003070
Publication date
Jan 6, 2022
Halliburton Energy Services, Inc.
Adam Davis Wright
E21 - EARTH DRILLING MINING
Information
Patent Application
Annulus Access Valve
Publication number
20180355697
Publication date
Dec 13, 2018
Halliburton Energy Services, Inc.
Darryl Kenneth Mackie
E21 - EARTH DRILLING MINING
Information
Patent Application
Apparatus and Method for Separating a Tubular String from a Subsea...
Publication number
20110226482
Publication date
Sep 22, 2011
Halliburton Energy Services, Inc.
Ross John Trewhella
E21 - EARTH DRILLING MINING