Douglas Allen Schafer

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Euless, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Reclosable multi zone isolation tool and method for use thereof
- Patent number 9,297,232
- Issue date Mar 29, 2016
- Halliburton Energy Services, Inc.
- Keith Wayne Scott
- E21 - EARTH DRILLING MINING
Information Patent Grant
Reclosable multi zone isolation tool and method for use thereof
- Patent number 8,757,275
- Issue date Jun 24, 2014
- Halliburton Energy Services, Inc.
- Keith Wayne Scott
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Reclosable Multi Zone Isolation Tool and Method for Use Thereof
- Publication number 20140020903
- Publication date Jan 23, 2014
- Halliburton Energy Services, Inc.
- Keith Wayne Scott
- E21 - EARTH DRILLING MINING
Information Patent Application
Reclosable Multi Zone Isolation Tool and Method for Use Thereof
- Publication number 20140020912
- Publication date Jan 23, 2014
- Halliburton Energy Services, Inc.
- Keith Wayne Scott
- E21 - EARTH DRILLING MINING