Grain-oriented electrical steel sheet
US11651878B2 · kind B2 · utility
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Key dates
| Filing date | Jan 31, 2019 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | Feb 21, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/60
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A grain-oriented electrical steel sheet according to the present invention has a steel sheet surface provided with grooves and includes two or more broken lines including the grooves having a length of 5 to 10 mm on a straight line intersecting a rolling direction on the steel sheet surface. In each of the broken lines including the grooves, the grooves are arranged at equal intervals, and a ratio of the length of the groove to a length of a non-groove is in a range of 1:1 to 1.5:1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.