Koji Hane

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of constructing underground gallery by using pneumatic trans...
- Patent number 7,063,657
- Issue date Jun 20, 2006
- Kajima Corporation
- Kazuo Okutsu
- G21 - NUCLEAR PHYSICS NUCLEAR ENGINEERING

Patents Applicationslast 30 patents

Information Patent Application
Method of constructing underground gallery by using pneumatic trans...
- Publication number 20050004416
- Publication date Jan 6, 2005
- Kazuo Okutsu
- E21 - EARTH DRILLING MINING