Rare earth permanent magnet
US10453595B2 · kind B2 · utility
0Cited by
6References
5Claims
0Family size
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Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Sep 23, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F1/086
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rare earth permanent magnet includes a main phase composed of a main phase particle and a grain boundary present among a plurality of the main phase particles. The grain boundary includes a region whose electric resistance is higher than that of the main phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.