Noriyoshi TUCHIYA

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Miyagi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Well drilling bit and well drilling method using the same
- Patent number 11,230,890
- Issue date Jan 25, 2022
- The University of Tokyo
- Shigemi Naganawa
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
WELL DRILLING BIT AND WELL DRILLING METHOD USING THE SAME
- Publication number 20190383102
- Publication date Dec 19, 2019
- The University of Tokyo
- Shigemi NAGANAWA
- E21 - EARTH DRILLING MINING