David J. Mathis

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Lake Charles, LA, US

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Patents Grantslast 30 patents

Information Patent Grant
Subsea tree safety control system
- Patent number 8,602,108
- Issue date Dec 10, 2013
- Schlumberger Technology Corporation
- David James Mathis
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsea tree safety control system
- Patent number 8,347,967
- Issue date Jan 8, 2013
- Sclumberger Technology Corporation
- David J. Mathis
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subsea communications system
- Patent number 7,261,162
- Issue date Aug 28, 2007
- Schlumberger Technology Corporation
- Gregor E. Deans
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SUBSEA TREE SAFETY CONTROL SYSTEM
- Publication number 20130092384
- Publication date Apr 18, 2013
- SCHLUMBERGER TECHNOLOGY CORPORATION
- David James Mathis
- E21 - EARTH DRILLING MINING
Information Patent Application
SUBSEA TREE SAFETY CONTROL SYSTEM
- Publication number 20090260829
- Publication date Oct 22, 2009
- SCHLUMBERGER TECHNOLOGY CORPORATION
- David J. Mathis
- E21 - EARTH DRILLING MINING
Information Patent Application
Subsea communications system
- Publication number 20040262008
- Publication date Dec 30, 2004
- Gregor E. Deans
- H04 - ELECTRIC COMMUNICATION TECHNIQUE