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Dana Earl Witt
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Katy, TX, US
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Patents Grants
last 30 patents
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Patent Grant
Annular blowout preventer (BOP) packing unit with integrated second...
Patent number
9,957,770
Issue date
May 1, 2018
Chevron U.S.A. Inc.
William Stephen Averill
E21 - EARTH DRILLING MINING
Information
Patent Grant
Systems and methods for removing components of a subsea well
Patent number
9,926,758
Issue date
Mar 27, 2018
Chevron U.S.A. Inc.
Jimmie Dean Adkins
E21 - EARTH DRILLING MINING
Information
Patent Grant
Subsea adapter for connecting a riser to a subsea tree
Patent number
7,735,561
Issue date
Jun 15, 2010
Chevron U.S.A. Inc.
Mark Alan Johnson
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Annular Blowout Preventer (BOP) Packing Unit with Integrated Second...
Publication number
20160201422
Publication date
Jul 14, 2016
Chevron U.S.A. Inc.
William Stephen Averill
E21 - EARTH DRILLING MINING
Information
Patent Application
SYSTEMS AND METHODS FOR FLOW REDUCTION OR ISOLATION IN A WELLBORE
Publication number
20140034330
Publication date
Feb 6, 2014
Chevron U.S.A. Inc.
Dana Earl Witt
E21 - EARTH DRILLING MINING
Information
Patent Application
SUBSEA ADAPTER FOR CONNECTING A RISER TO A SUBSEA TREE
Publication number
20090050329
Publication date
Feb 26, 2009
Chevron U.S.A. Inc.
Mark Alan Johnson
E21 - EARTH DRILLING MINING