Craig D. Johnson

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Letchworth, GB

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Patents Grantslast 30 patents

Information Patent Grant
Collapse resistant expandables for use in wellbore environments
- Patent number 7,191,842
- Issue date Mar 20, 2007
- Schlumberger Technology Corporation
- Matthew R. Hackworth
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expandable systems that facilitate desired fluid flow
- Patent number 7,168,485
- Issue date Jan 30, 2007
- Schlumberger Technology Corporation
- Craig D Johnson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Expandable devices and method
- Patent number 7,086,476
- Issue date Aug 8, 2006
- Schlumberger Technology Corporation
- Craig D. Johnson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Handling and assembly equipment and method
- Patent number 7,055,609
- Issue date Jun 6, 2006
- Schlumberger Technology Corporation
- Kevin W. Hayes
- E21 - EARTH DRILLING MINING
Information Patent Grant
Technique for deploying expandables
- Patent number 7,036,600
- Issue date May 2, 2006
- Schlumberger Technology Corporation
- Craig D. Johnson
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Expandable Devices and Method
- Publication number 20050241709
- Publication date Nov 3, 2005
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Craig D. Johnson
- E21 - EARTH DRILLING MINING
Information Patent Application
Collapse resistant expandables for use in wellbore environments
- Publication number 20040177972
- Publication date Sep 16, 2004
- Matthew R. Hackworth
- E21 - EARTH DRILLING MINING
Information Patent Application
Expandable systems that facilitate desired fluid flow
- Publication number 20040104026
- Publication date Jun 3, 2004
- Craig D. Johnson
- E21 - EARTH DRILLING MINING
Information Patent Application
Expandable devices and method
- Publication number 20040026079
- Publication date Feb 12, 2004
- Craig D. Johnson
- E21 - EARTH DRILLING MINING
Information Patent Application
Technique for deploying expandables
- Publication number 20040020660
- Publication date Feb 5, 2004
- Craig D. Johnson
- E21 - EARTH DRILLING MINING
Information Patent Application
Handling and assembly equipment and method
- Publication number 20030221842
- Publication date Dec 4, 2003
- Kevin W. Hayes
- E21 - EARTH DRILLING MINING