Carel W. J. Hoyer

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Monobore construction with dual expanders
- Patent number 8,020,625
- Issue date Sep 20, 2011
- Weatherford/Lamb, Inc.
- Lev Ring
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method of dynamically controlling bottom hole circulation pressure...
- Patent number 6,607,042
- Issue date Aug 19, 2003
- Precision Drilling Technology Services Group Inc.
- Carel W. J. Hoyer
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
MONOBORE CONSTRUCTION WITH DUAL EXPANDERS
- Publication number 20090266560
- Publication date Oct 29, 2009
- Lev Ring
- E21 - EARTH DRILLING MINING
Information Patent Application
Method of dynamically controlling bottom hole circulation pressure...
- Publication number 20020170749
- Publication date Nov 21, 2002
- Carel W. J. Hoyer
- E21 - EARTH DRILLING MINING