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Honeycomb filter
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Patent number 9,217,344
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Issue date Dec 22, 2015
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NGK Insulators, Ltd.
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Atsushi Mizuno
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Honeycomb structure
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Patent number 9,138,674
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Issue date Sep 22, 2015
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NGK Insulators, Ltd.
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Nobuaki Takahashi
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Catalyst body
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Patent number 7,348,289
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Issue date Mar 25, 2008
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NGK Insulators, Ltd.
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Shuichi Ichikawa
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL