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Masatoshi Uegaki
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Nara, JP
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last 30 patents
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Patent Grant
Method for purifying 1-aminoanthraquinone
Patent number
4,695,407
Issue date
Sep 22, 1987
Sumitomo Chemical Company, Limited
Norio Kotera
C07 - ORGANIC CHEMISTRY
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Patent Grant
Purification of compounds having high melting point
Patent number
4,323,431
Issue date
Apr 6, 1982
Sumitomo Chemical Company Limited
Masatoshi Takahashi
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL