High resistance magnet and motor using the same
US7696662B2 · kind B2 · utility
11Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2007 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Aug 14, 2027 |
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.