公开/公告号US5888026A
专利类型
公开/公告日1999-03-30
原文格式PDF
申请/专利权人 HER MAJESTY THE QUEEN IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF NATURAL RESOURCES;
申请/专利号US19970786965
申请日1997-01-24
分类号B01D21/02;B01D21/32;C09K17/00;
国家 US
入库时间 2022-08-22 02:08:27