发明名称 |
Plate-like maghemite particles and process of producing the same. |
摘要 |
Poreless, non-sintered plate-like maghemite particles, useful as materials for electromagnetic wave absorption and shields, have an average particle diameter of more than 0.5 mu m and not more than 2.0 mu m, and a BET specific surface area of not more than 6.0 m<2>/g. |
申请公布号 |
EP0422755(A1) |
申请公布日期 |
1991.04.17 |
申请号 |
EP19900303501 |
申请日期 |
1990.04.02 |
申请人 |
TODA KOGYO CORP. |
发明人 |
SADAMURA, HIDEAKI;TAKEDOI, ATSUSHI |
分类号 |
C01G49/06;C01G49/08;C09D5/32;H01F1/00;H01F1/11 |
主分类号 |
C01G49/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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