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Michael Berckenhoff
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Spring, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Pressure energized radial seal
Patent number
8,702,106
Issue date
Apr 22, 2014
Hydril USA Manufacturing LLC
Michael Wayne Berckenhoff
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Mounts for blowout preventer bonnets and methods of use
Patent number
8,230,930
Issue date
Jul 31, 2012
Hydril USA Manufacturing LLC
Edward Ryan Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and device with biasing force for sealing a well
Patent number
7,975,761
Issue date
Jul 12, 2011
Hydril USA Manufacturing LLC
Michael Wayne Berckenhoff
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mounts for blowout preventer bonnets and methods of use
Patent number
7,802,626
Issue date
Sep 28, 2010
Hydril USA Manufacturing LLC
Edward Ryan Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Grant
Removable seal carrier for blowout preventer bonnet assembly
Patent number
7,699,554
Issue date
Apr 20, 2010
Hydril USA Manufacturing LLC
Edward R. Hemphill
Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information
Patent Grant
Mounts for blowout preventer bonnets
Patent number
7,413,019
Issue date
Aug 19, 2008
Hydril USA Manufacturing LLC
Edward Ryan Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mounts for blowout preventer bonnets
Patent number
7,281,586
Issue date
Oct 16, 2007
Hydril Company
Edward Ryan Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mounts for blowout preventer bonnets
Patent number
7,246,666
Issue date
Jul 24, 2007
Hydril Company L.P.
Edward Ryan Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mounts for blowout preventer bonnets
Patent number
7,121,348
Issue date
Oct 17, 2006
Hydril Company L.P.
Edward Ryan Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Grant
Mounts for blowout preventer bonnets
Patent number
7,096,960
Issue date
Aug 29, 2006
Hydrill Company LP
Edward Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Grant
Quick release blowout preventer bonnet
Patent number
6,845,959
Issue date
Jan 25, 2005
Hydril Company, L.P.
Michael Wayne Berckenhoff
E21 - EARTH DRILLING MINING
Information
Patent Grant
Quick release blowout preventer bonnet
Patent number
6,554,247
Issue date
Apr 29, 2003
Hydril Company
Michael Wayne Berckenhoff
E21 - EARTH DRILLING MINING
Patents Applications
last 30 patents
Information
Patent Application
Mounts for Blowout Preventer Bonnets and Methods of Use
Publication number
20110005743
Publication date
Jan 13, 2011
Hydril Company LLC
Edward Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Application
Method and Device with Biasing Force for Sealing a Well
Publication number
20100155086
Publication date
Jun 24, 2010
Michael Wayne Berckenhoff
E21 - EARTH DRILLING MINING
Information
Patent Application
MOUNTS FOR BLOWOUT PREVENTER BONNETS
Publication number
20080142746
Publication date
Jun 19, 2008
Hydril Company LLC
Edward Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Application
Pressure energized radial seal
Publication number
20080017814
Publication date
Jan 24, 2008
Michael Wayne Berckenhoff
E21 - EARTH DRILLING MINING
Information
Patent Application
MOUNTS FOR BLOWOUT PREVENTER BONNETS
Publication number
20070102656
Publication date
May 10, 2007
Edward Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Application
MOUNTS FOR BLOWOUT PREVENTER BONNETS
Publication number
20060283602
Publication date
Dec 21, 2006
Hydril Company LP
Edward Ryan Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Application
Rod lock for ram blowout preventers
Publication number
20060278406
Publication date
Dec 14, 2006
Robert Arnold Judge
E21 - EARTH DRILLING MINING
Information
Patent Application
Mounts for blowout preventer bonnets
Publication number
20060243451
Publication date
Nov 2, 2006
Hydril Company LP
Edward Ryan Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Application
Mounts for blowout preventer bonnets
Publication number
20060162936
Publication date
Jul 27, 2006
Hydril Company LP
Edward Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Application
Removable seal carrier for blowout preventer bonnet assembly
Publication number
20040258470
Publication date
Dec 23, 2004
Edward R. Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Application
Quick release blowout preventer bonnet
Publication number
20040021102
Publication date
Feb 5, 2004
Michael Wayne Berckenhoff
E21 - EARTH DRILLING MINING
Information
Patent Application
Mounts for blowout preventer bonnets
Publication number
20030085040
Publication date
May 8, 2003
Edward Hemphill
E21 - EARTH DRILLING MINING
Information
Patent Application
Quick release blowout preventer bonnet
Publication number
20020162981
Publication date
Nov 7, 2002
Michael Wayne Berckenhoff
E21 - EARTH DRILLING MINING