Robin A. Ewan

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Stafford, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Self-anchoring device with force amplification
- Patent number 7,854,258
- Issue date Dec 21, 2010
- Schlumberger Technology Corporation
- Todor K. Sheiretov
- E21 - EARTH DRILLING MINING
Information Patent Grant
Self-anchoring device with force amplification
- Patent number 7,516,782
- Issue date Apr 14, 2009
- Schlumberger Technology Corporation
- Todor K. Sheiretov
- E21 - EARTH DRILLING MINING
Information Patent Grant
Traction control for downhole tractor
- Patent number 7,185,714
- Issue date Mar 6, 2007
- Schlumberger Technology Corp.
- Falk W. Doering
- E21 - EARTH DRILLING MINING
Information Patent Grant
Traction control for downhole tractor
- Patent number 7,143,843
- Issue date Dec 5, 2006
- Schlumberger Technology Corp.
- Falk W. Doering
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Methods and Apparatus for Measuring Downhole Position and Velocity
- Publication number 20160032711
- Publication date Feb 4, 2016
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Todor Sheiretov
- G01 - MEASURING TESTING
Information Patent Application
Self-Anchoring Device with Force Amplification
- Publication number 20090159269
- Publication date Jun 25, 2009
- Todor K. Sheiretov
- E21 - EARTH DRILLING MINING
Information Patent Application
SELF-ANCHORING DEVICE WITH FORCE AMPLIFICATION
- Publication number 20070181298
- Publication date Aug 9, 2007
- Todor K. Sheiretov
- E21 - EARTH DRILLING MINING
Information Patent Application
Traction control for downhole tractor
- Publication number 20060151212
- Publication date Jul 13, 2006
- Falk W. Doering
- E21 - EARTH DRILLING MINING
Information Patent Application
Traction control for downhole tractor
- Publication number 20050145415
- Publication date Jul 7, 2005
- Falk W. Doering
- E21 - EARTH DRILLING MINING