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Yoshinori Yushina
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Musashino, JP
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last 30 patents
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Patent Grant
Cylindrical hollow carriers for microorganisms made of nonwoven fabric
Patent number
4,957,868
Issue date
Sep 18, 1990
Chiyoda Chemical Engineering & Constructions Co., Ltd.
Yoshinori Yushina
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Apparatus for biological treatment of waste water in downflow opera...
Patent number
4,454,038
Issue date
Jun 12, 1984
Chiyoda Chemical Engineering and Construction Co., Ltd.
Chiaki Shimodaira
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for biological treatment of waste water in downflow operation
Patent number
4,256,573
Issue date
Mar 17, 1981
Chiyoda Chemical Engineering and Construction Co., Ltd.
Chiaki Shimodaira
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE