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Distilling apparatus
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Patent number 4,953,694
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Issue date Sep 4, 1990
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Hitachi, Ltd.
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Nobuatsu Hayashi
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Absorption-type refrigerator
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Patent number 4,783,277
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Issue date Nov 8, 1988
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Hitachi, Ltd.
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Yasuo Koseki
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F25 - REFRIGERATION OR COOLING COMBINED HEATING AND REFRIGERATION SYSTEMS HEA...
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Impurity detector
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Patent number 4,670,137
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Issue date Jun 2, 1987
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Hitachi, Ltd.
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Yasuo Koseki
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G01 - MEASURING TESTING
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Heat storing apparatus
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Patent number 4,638,646
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Issue date Jan 27, 1987
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Hitachi, Ltd.
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Yasuo Koseki
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F28 - HEAT EXCHANGE IN GENERAL
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Method of removing crude oil sludge
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Patent number 4,619,768
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Issue date Oct 28, 1986
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Hitachi, Ltd.
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Sankichi Takahashi
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Sorting apparatus
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Patent number 4,435,285
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Issue date Mar 6, 1984
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Hitachi, Ltd.
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Isao Okouchi
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F28 - HEAT EXCHANGE IN GENERAL
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Method for treatment of sewage
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Patent number 4,280,886
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Issue date Jul 28, 1981
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Hitachi, Ltd.
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Toshio Sawa
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Filtration method
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Patent number 4,178,245
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Issue date Dec 11, 1979
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Hitachi, Ltd.
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Azuma Nakaoka
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Dialysis method and apparatus therefor
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Patent number 4,177,138
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Issue date Dec 4, 1979
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Hitachi Plant Engineering and Construction Co., Ltd.
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Harumi Mastuzaki
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL