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Fuel cell
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Patent number 10,224,555
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Issue date Mar 5, 2019
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NGK Spark Plug Co., Ltd.
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Hideki Ishikawa
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F28 - HEAT EXCHANGE IN GENERAL
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Fuel cell and fuel cell stack
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Patent number 9,954,237
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Issue date Apr 24, 2018
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NGK Spark Plug Co., Ltd.
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Takeshi Ohno
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H01 - BASIC ELECTRIC ELEMENTS
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Solid oxide fuel cell
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Patent number 9,853,308
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Issue date Dec 26, 2017
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NGK Spark Plug Co., Ltd.
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Takeshi Ohno
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H01 - BASIC ELECTRIC ELEMENTS