Hitoshi Yonekawa

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Chita-gun, JP

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Patents Grantslast 30 patents

Information Patent Grant
Flocculation apparatus
- Patent number 7,300,579
- Issue date Nov 27, 2007
- NGK Insulators, Ltd.
- Hitoshi Yonekawa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Filtering method
- Patent number 6,991,737
- Issue date Jan 31, 2006
- NGK Insulators, Ltd.
- Hiroyuki Oyachi
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Enzyme-fixed bioreactor
- Patent number 5,143,847
- Issue date Sep 1, 1992
- NGK Insulators, Ltd.
- Mitsuo Kawase
- C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...

Patents Applicationslast 30 patents

Information Patent Application
Filtering method
- Publication number 20040200785
- Publication date Oct 14, 2004
- NGK Insulators, Ltd.
- Hiroyuki Oyachi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Flocculation apparatus
- Publication number 20040178134
- Publication date Sep 16, 2004
- NGK Insulators, Ltd.
- Hitoshi Yonekawa
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE