发明授权
- 专利标题： Production of magnetic powder
- 专利标题（中）： 生产磁粉
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申请号： US18125申请日： 1979-03-07
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公开(公告)号： US4306921A公开(公告)日： 1981-12-22
- 发明人: Shintaro Suzuki , Sadao Iizuka , Yoshimi Moriya
- 申请人： Shintaro Suzuki , Sadao Iizuka , Yoshimi Moriya
- 申请人地址： JPX Tokyo
- 专利权人： Kanto Denka Kogyo Co., Ltd.
- 当前专利权人： Kanto Denka Kogyo Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX53-30151 19780316
- 主分类号： B22F9/22
- IPC分类号： B22F9/22 ; B22F1/02 ; H01F1/06
摘要：
The magnetic characteristics of magnetic powder consisting mainly of iron are improved by pre-treating the starting material from which the magnetic powder is prepared by reduction, with an aqueous solution and/or suspension of one member selected from the group consisting of cobalt, nickel, manganese and antimony compounds and mixtures thereof.
公开/授权文献
- US5750919A Self-adjusting obturator for projectile launching 公开/授权日：1998-05-12
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