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Yoshiyuki Sumi
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Kitakyushu, JP
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last 30 patents
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Patent Grant
Process for preparing an aqueous slurry of terephthalic acid
Patent number
5,557,009
Issue date
Sep 17, 1996
Mitsubishi Chemical Corporation
Yoshiaki Izumisawa
C07 - ORGANIC CHEMISTRY
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Patent Grant
Process for producing highly pure terephthalic acid
Patent number
5,420,344
Issue date
May 30, 1995
Mitsubishi Chemical Corporation
Yoshiaki Izumisawa
C07 - ORGANIC CHEMISTRY