High resistance magnet and motor using the same
US8222785B2 · kind B2 · utility
3Cited by
19References
8Claims
0Family size
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Key dates
| Filing date | Jun 27, 2011 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Jun 27, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
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 %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.