Grain oriented electrical steel sheet
US8568857B2 · kind B2 · utility
3Cited by
1References
2Claims
0Family size
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Key dates
| Filing date | Aug 5, 2011 |
| Grant date | Oct 29, 2013 |
| Priority date | — |
| Expiry date | Aug 5, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24942
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A grain oriented electrical steel sheet has grooves on one surface of the steel sheet formed for magnetic domain refining, the steel sheet including a forsterite film and a tension coating on front and back surfaces of the steel sheet, wherein the tension coating is applied on a surface with the grooves in a coating amount A (g/m2) and is applied on a surface with no grooves in a coating amount B (g/m2), the coating amounts A and B satisfying (1) and (2):3≦A≦8 (1);and1.0<B/A≦1.8 (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.