| Patent Number |
Title Of Patent |
Date Issued |
| 5961744 |
Grain oriented silicon steel sheet having low core loss and method of manufacturing same |
October 5, 1999 |
| Grain oriented silicon steel sheet on which is formed an insulating coating having a thickness that is not less than 2.5 .mu.m that imparts tension to the steel sheet which does not have an inorganic mineral layer formed during a final annealing step (glass film) and a method of forming |
| 5782998 |
Grain oriented electrical steel sheet having specular surface |
July 21, 1998 |
| In order to provide a very low iron loss, it is necessary to render the surface of a steel sheet smooth (specular). In the present invention, this is effected in a finish annealing furnace to simultaneously attain a high magnetic flux density and a specular surface. Specifically, after t |
| 5753051 |
Oriented electrical steel sheet having low core loss and method of manufacturing same |
May 19, 1998 |
| Low core loss oriented electrical steel sheet having a surface coating that has a Young's modulus that is not less than 100 GPa and a differential of thermal expansion coefficient relative to the sheet base metal that is not less than 2.times.10.sup.-6 /K and which contains not less than |
| 5679177 |
Oriented electrical steel sheet having low core loss and method of manufacturing same |
October 21, 1997 |
| Low core loss oriented electrical steel sheet having a surface coating that has a Young's modulus that is not less than 100 GPa and a differential of thermal expansion coefficient relative to the sheet base metal that is not less than 2.times.10.sup.-6 /K and which contains not less than |
| 5565272 |
Grain oriented silicon steel sheet having excellent primary film properties |
October 15, 1996 |
| A grain oriented silicon steel sheet having excellent primary glass film property and magnetic property, comprising 2.0 to 5.0% by weight of Si, wherein a primary glass film formed during secondary recrystallization annealing is composed mainly of forsterite (Mg.sub.2 SiO.sub.4) and an |
| 5411808 |
Oriented electrical steel sheet having low core loss and method of manufacturing same |
May 2, 1995 |
| Low core loss oriented electrical steel sheet having a surface coating that has a Young's modulus that is not less than 100 GPa and a differential of thermal expansion coefficient relative to the sheet base metal that is not less than 2.times.10.sup.-6 /K and which contains not less than |
