Process for producing highly pure 3,3',4,4' - biphenyltetra- carboxylic acid or dianhydride thereof.,申请号EP19900104553-传众专利搜索

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发明名称	Process for producing highly pure 3,3',4,4' - biphenyltetra- carboxylic acid or dianhydride thereof.
摘要
申请公布号	EP0421046(B1)	申请公布日期	1995.06.14
申请号	EP19900104553	申请日期	1990.03.09
申请人	HITACHI, LTD.;KANTO KOATSU KAGAKU CO., LTD.	发明人	SHOJI, FUSAJI;AOKI, NOBUO;KURITA, JUN;AOYAMA, TSUYOSHI;KIRIYU, TOSHIYUKI;MATSUZAKI, YOSHINORI
分类号	C07D307/89;C07C51/083;C07C51/087;C07C51/47;C07C51/487;C07C51/573;C07C63/331;(IPC1-7):C07C51/487;C07C63/333	主分类号	C07D307/89
代理机构		代理人
主权项
地址

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