Katsutoshi Yamada

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Hitachinaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Water quality meter and water quality monitoring system
- Patent number 6,444,172
- Issue date Sep 3, 2002
- Hitachi, Ltd.
- Masao Fukunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Water quality meter and water quality monitoring system
- Patent number 6,398,930
- Issue date Jun 4, 2002
- Hitachi, Ltd.
- Masao Fukunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Water quality meter and water monitoring system
- Patent number 6,290,908
- Issue date Sep 18, 2001
- Hitachi, Ltd.
- Masao Fukunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Water quality meter and water quality monitoring system
- Publication number 20010013488
- Publication date Aug 16, 2001
- Masao Fukunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Application
Water quality meter and water quality monitoring system
- Publication number 20010011642
- Publication date Aug 9, 2001
- Masao Fukunaga
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE