Soft magnetic powder
US8187394B2 · kind B2 · utility
5Cited by
7References
19Claims
0Family size
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Key dates
| Filing date | Dec 6, 2007 |
| Grant date | May 29, 2012 |
| Priority date | — |
| Expiry date | Oct 2, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A powder magnetic core is provided for operating at high frequencies that is obtained by pressure forming an iron-based magnetic powder covered with an insulation film, which has a specific resistance more than 1000, preferably more than 2000, and most preferably more than 3000 μΩm, and a saturation magnetic flux density B above 1.5, preferably above 1.7, and most preferably above 1.9 (T). A method for the preparation of such cores as well as a powder which is suitable for the preparation also are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.