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Patent applications and USPTO patent grants for Nate; Nobuyuki.The latest application filed is for "process for producing high-purity 4,4'-dihydroxydiphenyl sulfone".
Patent | Date |
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Process for producing high-purity 4,4'-dihydroxydiphenyl sulfone Grant 7,456,321 - Ogata , et al. November 25, 2 | 2008-11-25 |
Process for producing dihydroxydiphenylsulfone Grant 6,974,886 - Oi , et al. December 13, 2 | 2005-12-13 |
Color developer and thermal recording material containing the same App 20050272603 - Oi, Fumio ;   et al. | 2005-12-08 |
Process for producing high-purity 4,4'-dihydroxydiphenyl sulfone App 20050272956 - Ogata, Eiji ;   et al. | 2005-12-08 |
Process for producing dihydroxydiphenyl sulfone App 20050171384 - Oi, Fumio ;   et al. | 2005-08-04 |
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