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Shigeharu Matsubara
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Kitakyushu, JP
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last 30 patents
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Patent Grant
Process for treating industrial wastewaters by activated sludge
Patent number
4,698,158
Issue date
Oct 6, 1987
Nippon Steel Corporation
Masahiro Fujii
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE