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发明名称
PHOTOCHROMIC NAPHTHOPYRAN COMPOUNDS
摘要
申请公布号
EP0662968(B1)
申请公布日期
1998.12.02
申请号
EP19930921291
申请日期
1993.09.01
申请人
PPG INDUSTRIES, INC.
发明人
VAN GEMERT, BARRY
分类号
C07D311/92;C08K5/1545;C08K5/357;G02B5/23;(IPC1-7):C07D311/92;G02B27/00;C08K5/15;C07D409/10;C07D409/06;C07D407/10;C07D407/06;C07D407/04
主分类号
C07D311/92
代理机构
代理人
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地址
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