Lisa L. Posevina

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Wellbore cleaning devices
- Patent number 8,511,375
- Issue date Aug 20, 2013
- Baker Hughes Incorporated
- Gregory L. Hern
- E21 - EARTH DRILLING MINING
Information Patent Grant
Single cycle dart operated circulation sub
- Patent number 7,934,559
- Issue date May 3, 2011
- Baker Hughes Incorporated
- Lisa L. Posevina
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Wellbore Cleaning Devices
- Publication number 20110265988
- Publication date Nov 3, 2011
- BAKER HUGHES INCORPORATED
- Gregory L. Hern
- E21 - EARTH DRILLING MINING
Information Patent Application
Wellbore Cleaning Devices
- Publication number 20100096122
- Publication date Apr 22, 2010
- BAKER HUGHES INCORPORATED
- Lisa L. Posevina
- E21 - EARTH DRILLING MINING
Information Patent Application
Single cycle dart operated circulation sub
- Publication number 20080190620
- Publication date Aug 14, 2008
- Lisa L. Posevina
- E21 - EARTH DRILLING MINING