Hajime Furusawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of inspecting abnormality occurring inside pipe and apparatu...
- Patent number 5,773,984
- Issue date Jun 30, 1998
- Tokyo Gas Co., Ltd.
- Kiichi Suyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method of measuring inner diameter of pipe
- Patent number 5,612,625
- Issue date Mar 18, 1997
- Tokyo Gas Co., Ltd.
- Kiichi Suyama
- G01 - MEASURING TESTING