Byung-Hee Choi

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Daejeon, KR

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for measuring in-situ stress of rock using the...
- Patent number 8,082,105
- Issue date Dec 20, 2011
- Korea Institute of Geoscience & Mineral Resources (KIGAM)
- Chang-Ha Ryu
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
METHOD AND APPARATUS FOR MEASURING IN-SITU STRESS OF ROCK USING THE...
- Publication number 20090070043
- Publication date Mar 12, 2009
- Chang-Ha Ryu
- E21 - EARTH DRILLING MINING