Electrical steel sheet, laminated core, and laminated core manufacturing method
US11749431B2 · kind B2 · utility
1Cited by
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12Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 17, 2021 |
| Grant date | Sep 5, 2023 |
| Priority date | — |
| Expiry date | Jun 17, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K1/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This electrical steel sheet includes a base steel sheet, a first insulation coating formed on a first surface of the base steel sheet and having adhesiveness, and a second insulation coating formed on a second surface of the base steel sheet which is a back surface to the first surface and having adhesiveness, in which an average pencil hardness of the first insulation coating is HB or higher and 3 H or lower, and an average pencil hardness of the second insulation coating is higher than the average pencil hardness of the first insulation coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.