| 发明名称 |
Acicular ferrimagnetic iron oxide and its preparation |
| 摘要 |
A modified acicular ferrimagnetic iron oxide which consists of a core of gamma-iron(III) oxide and a surrounding shell of gamma-iron(III) oxide modified by tin dioxide and carbon, and a process for its preparation.
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| 申请公布号 |
US4457982(A) |
申请公布日期 |
1984.07.03 |
| 申请号 |
US19830461746 |
申请日期 |
1983.01.28 |
| 申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
RUDOLF, PETER;KOVACS, JENOE;VAETH, GUENTER;OHLINGER, MANFRED |
| 分类号 |
C01G49/00;C01G49/06;C09D5/23;G11B5/706;H01F1/11;(IPC1-7):C01G49/06 |
主分类号 |
C01G49/00 |
| 代理机构 |
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