Powder magnetic core and electromagnetic part
US11869691B2 · kind B2 · utility
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2References
8Claims
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Key dates
| Filing date | Jul 23, 2018 |
| Grant date | Jan 9, 2024 |
| Priority date | — |
| Expiry date | Jun 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A powder magnetic core includes a compact including soft magnetic powder, and an insulating-resin coating that covers a portion of a surface of the compact. A ratio of an area of the insulating-resin coating to a surface area of the compact is lower than or equal to 85%, and a maximum depth of unevenness on a surface of the insulating-resin coating is smaller than or equal to 20 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.