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Tsukasa Hirayama
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Obu, JP
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last 30 patents
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Patent Grant
Equipment for trapping particulates in engine exhaust gas
Patent number
4,662,911
Issue date
May 5, 1987
Nippondenso Co., Ltd.
Tsukasa Hirayama
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES