Robert Divis

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Zonal isolation tools and methods of use
- Patent number 7,591,321
- Issue date Sep 22, 2009
- Schlumberger Technology Corporation
- John R. Whitsitt
- E21 - EARTH DRILLING MINING
Information Patent Grant
Modular retrievable packer
- Patent number 6,892,820
- Issue date May 17, 2005
- Schlumberger Technology Corporation
- Robert Divis
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Zonal Isolation Tools and Methods of Use
- Publication number 20060260820
- Publication date Nov 23, 2006
- SCHLUMBERGER TECHNOLOGY CORPORATION
- John R. Whitsitt
- E21 - EARTH DRILLING MINING
Information Patent Application
Modular retrievable packer
- Publication number 20040026092
- Publication date Feb 12, 2004
- Robert Divis
- E21 - EARTH DRILLING MINING