Rare earth magnet and method therefor
US7608153B2 · kind B2 · utility
6Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2004 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Nov 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/2781
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rare earth magnet includes rare earth magnet particles; and amorphous and/or crystalline terbium oxide present at the boundary of the rare earth magnet particles and represented by the formula: TbOn, wherein 1.5<n≦2. The rare earth magnet prevents decrease eddy current effectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.