Brian J. Stefan

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Method for enhancing heavy hydrocarbon recovery
- Patent number 7,938,183
- Issue date May 10, 2011
- Baker Hughes Incorporated
- Paul Robert Hart
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Method for Enhancing Heavy Hydrocarbon Recovery
- Publication number 20090218099
- Publication date Sep 3, 2009
- BAKER HUGHES INCORPORATED
- Paul Robert Hart
- E21 - EARTH DRILLING MINING