| 申请日期 | 2025-07-20 | 申请号 | US12708580 |
| 公开（公告）号 | US7972450B2 | 公开（公告）日 | 2011-07-05 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Matahiro Komuro; Yuichi Satsu; Takao Imagawa | ||
| 简介 | A magnet comprising grains of a ferromagnetic material whose main component is iron and a fluorine compound layer or an oxy-fluorine compound layer of fluoride compound particles of alkali metals, alkaline earth metals and rare earth elements, present on the surface of the ferromagnetic material grains, wherein an amount of iron atoms in the fluorine compound particles is 1 to 50 atomic %. | ||
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