Ralph H. ECHOLS

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Aberdeen, GB

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Patents Grantslast 30 patents

Information Patent Grant
Downhole ball valve
- Patent number 10,221,652
- Issue date Mar 5, 2019
- Halliburton Energy Services, Inc.
- Peter Derek Walter Inglis
- E21 - EARTH DRILLING MINING
Information Patent Grant
Erosion reduction in subterranean wells
- Patent number 9,909,396
- Issue date Mar 6, 2018
- Halliburton Energy Services, Inc.
- Thomas J. Frosell
- E21 - EARTH DRILLING MINING
Information Patent Grant
Erosion reduction in subterranean wells
- Patent number 9,476,286
- Issue date Oct 25, 2016
- Halliburton Energy Services, Inc.
- Thomas J. Frosell
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
EROSION REDUCTION IN SUBTERRANEAN WELLS
- Publication number 20170037709
- Publication date Feb 9, 2017
- Halliburton Energy Services, Inc.
- Thomas J. FROSELL
- E21 - EARTH DRILLING MINING
Information Patent Application
Downhole Ball Valve
- Publication number 20160348469
- Publication date Dec 1, 2016
- Halliburton Energy Services, Inc.
- Peter Derek Walter Inglis
- E21 - EARTH DRILLING MINING
Information Patent Application
EROSION REDUCTION IN SUBTERRANEAN WELLS
- Publication number 20130306318
- Publication date Nov 21, 2013
- Thomas J. FROSELL
- E21 - EARTH DRILLING MINING