| 发明名称 |
Economical process for producing metal particles for magnetic recording |
| 摘要 |
Highly orientable acicular iron particles are made by reducing an acicular ferric oxide which has been formed into a porous matrix by combining it with sodium tripolyphosphate and reducing the oxide with hydrogen in the presence of a dehydrating agent.
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| 申请公布号 |
US4316738(A) |
申请公布日期 |
1982.02.23 |
| 申请号 |
US19800152899 |
申请日期 |
1980.05.23 |
| 申请人 |
AMPEX CORPORATION |
发明人 |
WOLF, IRVING W.;STAFFORD, MICHAEL K.;KAHAN, HILLARD M.;ACEBO, WILLIAM F.;SCOTT, LAWRENCE M.;LEE, YU C. |
| 分类号 |
G11B5/62;B22F9/22;C09D5/23;C09D7/12;C21B13/00;C21B15/00;H01F1/06;(IPC1-7):B22F9/00 |
主分类号 |
G11B5/62 |
| 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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