| 申请日期 | 2025-06-28 | 申请号 | US11924779 |
| 公开（公告）号 | US7816820B2 | 公开（公告）日 | 2010-10-19 |
| 公开国别 | US | 申请人省市代码 | 全国 |
| 申请人 | Takao Imagawa; Yuichi Satsu; Matahiro Komuro | ||
| 简介 | A compacted magnetic core with a high resistance, which comprises compacted magnetic powder of an iron powder or an alloy powder containing iron as a main ingredient and a layer of a rare earth metal fluoride or an alkaline earth metal fluoride on the surface of the powder, wherein the rare earth metal fluoride or the alkaline earth metal fluoride contains fluorine-depleted crystal lattice at a rate of 10% or less. | ||
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