John D. Hooker, II

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Langenhagen, DE

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Patents Grantslast 30 patents

Information Patent Grant
Remotely operated single joint elevator
- Patent number 8,215,687
- Issue date Jul 10, 2012
- Weatherford/Lamb, Inc.
- Bernd-Georg Pietras
- E21 - EARTH DRILLING MINING
Information Patent Grant
Fill up and circulation tool and mudsaver valve
- Patent number 8,141,642
- Issue date Mar 27, 2012
- Weatherford/Lamb, Inc.
- Delaney Michael Olstad
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
REMOTELY OPERATED SINGLE JOINT ELEVATOR
- Publication number 20120247786
- Publication date Oct 4, 2012
- Bernd-Georg Pietras
- E21 - EARTH DRILLING MINING
Information Patent Application
FILL UP AND CIRCULATION TOOL AND MUDSAVER VALVE
- Publication number 20100032162
- Publication date Feb 11, 2010
- Delaney Michael Olstad
- E21 - EARTH DRILLING MINING
Information Patent Application
Tubular Handling Apparatus
- Publication number 20090274545
- Publication date Nov 5, 2009
- Martin Liess
- E21 - EARTH DRILLING MINING
Information Patent Application
REMOTELY OPERATED SINGLE JOINT ELEVATOR
- Publication number 20090110535
- Publication date Apr 30, 2009
- Bernd-Georg Pietras
- E21 - EARTH DRILLING MINING