Laminated inductor
US8427265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2012 |
| Grant date | Apr 23, 2013 |
| Priority date | — |
| Expiry date | Apr 20, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2017/0066
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A laminated inductor includes a laminate constituted by multiple magnetic material layers, and coil conductors formed in a spiral pattern in the laminate. The magnetic material layers are layers of a magnetic material having multiple metal grains constituted by a Fe—Si-M soft magnetic alloy and oxide film formed on the surface of the metal grains. The magnetic material has bonding portions where adjacent metal grains are bonded via the oxide film formed on the respective surfaces of the adjacent metal grains as well as bonding portions of metal grains bonding to each other in areas where no oxide film is present, and at least some of the voids generated by agglomeration of the metal grains are filled with a resin material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.