Insulation film, powder for magnetic core and powder magnetic core and processes for producing the same
US7029769B2 · kind B2 · utility
2Cited by
0References
28Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 18, 2003 |
| Grant date | Apr 18, 2006 |
| Priority date | — |
| Expiry date | Nov 28, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An insulation film whose requisite constituent elements are first elements and a second element. The first elements include B, P, O and Fe. The second element can generate cations whose hexa-coordinated ion radius, defined by Shannon, R. D., is 0.073 nm or more, and which are bivalent or more. Since the second element having a large ion radius is incorporated into network formers made from the first elements, it is possible to improve the heat resistance of the insulation film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.