Rare earth magnet, process for producing same, and motor using rare earth magnet
US6984271B2 · kind B2 · utility
4Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2004 |
| Grant date | Jan 10, 2006 |
| Priority date | — |
| Expiry date | Mar 26, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/278
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rare earth magnet to be used in a motor. The rare earth magnet comprises rare earth magnet particles. Additionally, a rare earth oxide is present among the rare earth magnet particles, the rare earth oxide being represented by the following general formula (I):R2xR′2(1−x)O3 (I)where each of R and R′ is one element selected from the group consisting of yttrium (Y), lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb) and lutetium (Lu), and 0<x<1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.