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Process for deashing coal
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Patent number 4,762,526
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Issue date Aug 9, 1988
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The Tokyo Electric Power Co., Inc.
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Taiichi Funaji
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B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
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Method for de-ashing and transportation of coal
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Patent number 4,455,148
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Issue date Jun 19, 1984
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Mitsui Engineering & Shipbuilding Co., Ltd.
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Kenichi Nagata
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
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Coal pellets production
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Patent number 4,420,445
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Issue date Dec 13, 1983
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Mitsui Engineering & Shipbuilding Co., Ltd.
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Sueshi Yamamoto
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C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...