Koichi Sumida

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for measuring odorant concentration and oderan...
- Patent number 5,844,124
- Issue date Dec 1, 1998
- Osaka Gas Co., Ltd.
- Takayuki Shimokawatoko
- G01 - MEASURING TESTING
Information Patent Grant
Gas visualizing apparatus and method for detecting gas leakage from...
- Patent number 5,430,293
- Issue date Jul 4, 1995
- Osaka Gas Co., Ltd.
- Tominori Sato
- G01 - MEASURING TESTING