Ewan O. Robb

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Angus, GB

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Patents Grantslast 30 patents

Information Patent Grant
Constructed annular safety valve element package
- Patent number 10,577,889
- Issue date Mar 3, 2020
- Halliburton Energy Services, Inc.
- Ewan Ogilvie Robb
- E21 - EARTH DRILLING MINING
Information Patent Grant
Constructed annular safety valve element package
- Patent number 10,253,605
- Issue date Apr 9, 2019
- Halliburton Energy Services, Inc.
- Ewan Ogilvie Robb
- E21 - EARTH DRILLING MINING
Information Patent Grant
Pressure equalization for dual seat ball valve
- Patent number 9,657,550
- Issue date May 23, 2017
- Halliburton Energy Services, Inc.
- Peter D. W. Inglis
- E21 - EARTH DRILLING MINING
Information Patent Grant
Remote actuated plug apparatus
- Patent number 6,431,276
- Issue date Aug 13, 2002
- Halliburton Energy Services, Inc.
- Ewan O. Robb
- E21 - EARTH DRILLING MINING
Information Patent Grant
Remote actuated plug method
- Patent number 6,161,622
- Issue date Dec 19, 2000
- Halliburton Energy Services, Inc.
- Ewan O. Robb
- E21 - EARTH DRILLING MINING
Information Patent Grant
Plug apparatus having a dispersible plug member and a fluid barrier
- Patent number 6,076,600
- Issue date Jun 20, 2000
- Halliburton Energy Services, Inc.
- James D. Vick
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Constructed Annular Safety Valve Element Package
- Publication number 20190195058
- Publication date Jun 27, 2019
- Halliburton Energy Services, Inc.
- Ewan Ogilvie Robb
- E21 - EARTH DRILLING MINING
Information Patent Application
PRESSURE EQUALIZATION FOR DUAL SEAT BALL VALVE
- Publication number 20160003004
- Publication date Jan 7, 2016
- Halliburton Energy Services, Inc.
- Peter D. W. Inglis
- E21 - EARTH DRILLING MINING
Information Patent Application
Constructed Annular Safety Valve Element Package
- Publication number 20150226047
- Publication date Aug 13, 2015
- Halliburton Energy Services, Inc.
- Ewan Ogilvie Robb
- E21 - EARTH DRILLING MINING