Grain-oriented electrical steel sheet
US9761361B2 · kind B2 · utility
2Cited by
1References
4Claims
0Family size
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Key dates
| Filing date | Feb 8, 2013 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Jul 23, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2201/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A grain-oriented electrical steel sheet produces reduced noise when worked into a transformer, by setting length d of each plastic strain region in the widthwise direction of the steel sheet to 0.05 mm or more and 0.4 mm or less, and a ratio (Σd/Σw) of a total Σd of the length d to a total Σw of application interval w of each of the above plastic strain regions to 0.2 or more and 0.6 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.