Shiro Nakadaira

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Tsuchiura, JP

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Patents Grantslast 30 patents

Information Patent Grant
Fluidized bed filtering apparatus
- Patent number 6,039,866
- Issue date Mar 21, 2000
- Hitachi, Ltd.
- Tetsuya Tanaka
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Purifying method and purification system for lakes and marshes
- Patent number 5,893,978
- Issue date Apr 13, 1999
- Hitachi, Ltd.
- Hiroaki Yoda
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE