Carel W. Hoyer

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London, GB

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Patents Grantslast 30 patents

Information Patent Grant
Rotating control system and method for providing a differential pre...
- Patent number 8,636,087
- Issue date Jan 28, 2014
- Weatherford/Lamb, Inc.
- Don M. Hannegan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Drilling with a high pressure rotating control device
- Patent number 8,347,983
- Issue date Jan 8, 2013
- Weatherford/Lamb, Inc.
- Carel W. Hoyer
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Rotating Control System and Method for Providing a Differential Pre...
- Publication number 20130118749
- Publication date May 16, 2013
- Weatherford/Lamb Inc.
- Don M. Hannegan
- E21 - EARTH DRILLING MINING
Information Patent Application
Drilling with a high pressure rotating control device
- Publication number 20110024195
- Publication date Feb 3, 2011
- WEATHERFORD/LAMB, INC.
- Carel W. Hoyer
- E21 - EARTH DRILLING MINING