Iron based soft magnetic powder having an insulating coating
US7455905B2 · kind B2 · utility
3Cited by
10References
22Claims
0Family size
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Key dates
| Filing date | Sep 8, 2004 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Aug 6, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention concerns a high purity, annealed iron powder suitable for the preparation of soft magnetic composites. The powder is distinguished in that the content of inevitable impurities is less than 0.30% by weight, the oxygen content is less than 0.05% by weight, and the specific surface area as measured by the BET method is less than 60 m2/kg.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.