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Ryuzi Haseyama
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Yokohama, JP
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last 30 patents
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Patent Grant
Aromatic polyisocyanate
Patent number
5,171,468
Issue date
Dec 15, 1992
Mitsui Toatsu Chemicals, Incorporated
Kiyoshi Shikai
C07 - ORGANIC CHEMISTRY
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Patent Grant
Process for preparing isocyanurate ring-containing materials
Patent number
4,937,339
Issue date
Jun 26, 1990
Mitsui Toatsu Chemicals, Incorporated
Tetsunosuke Shiomura
C07 - ORGANIC CHEMISTRY