High resistance magnet and motor using the same
US7972450B2 · kind B2 · utility
5Cited by
17References
25Claims
0Family size
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Key dates
| Filing date | Feb 19, 2010 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Feb 19, 2030 |
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.