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Method for treating waste waters
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Patent number 4,137,162
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Issue date Jan 30, 1979
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Nippon Oil Company, Ltd.
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Michihiro Mohri
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Process for fluidized contact
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Patent number 4,108,682
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Issue date Aug 22, 1978
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Nippon Oil Company Ltd.
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Hiroo Takeda
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL