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Eiichi Nakamura
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Tsukuba, JP
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last 30 patents
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Patent Grant
Process for activated-sludge treatment of sewage or industrial wast...
Patent number
4,832,847
Issue date
May 23, 1989
Nippon Steel Corporation
Masahiro Fujii
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE