Magnetic core with vertical laminations having high aspect ratio
US11735349B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2019 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Feb 7, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F41/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for manufacturing a vertically-laminated ferromagnetic core includes (a) depositing a conductive seed layer on or over a first side of a substrate; (b) depositing a masking layer on or over a second side of the substrate, the first and second sides on opposite sides of the substrate; (c) forming a pattern in the masking layer; (d) dry etching the substrate, based on the pattern in the masking layer, from the second side to the first side to expose portions of the conductive seed layer; and (e) depositing a ferromagnetic material onto the exposed portions of the conductive seed layer to form vertically-oriented ferromagnetic layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.