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发明名称
PURIFICATION OF PYROMELLITIC DIANHYDRIDE
摘要
申请公布号
JPH051069(A)
申请公布日期
1993.01.08
申请号
JP19910173425
申请日期
1991.06.19
申请人
NIPPON STEEL CHEM CO LTD
发明人
HARA TADANORI;SAKAKIBARA KENSHIROU;DAITO NOBORU
分类号
C07D493/04
主分类号
C07D493/04
代理机构
代理人
主权项
地址
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