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Katsuhiko Shimakawa
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Sabae, JP
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last 30 patents
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Patent Grant
Condensation product and use thereof as dispersant for pitch in wat...
Patent number
4,565,546
Issue date
Jan 21, 1986
Nikka Chemical Industry Co.
Osamu Ohzeki
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Patent Grant
Pitch-containing composition
Patent number
4,539,012
Issue date
Sep 3, 1985
Nikka Chemical Industry Co., Ltd.
Osamu Ohzeki
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL