| Patent Number |
Title Of Patent |
Date Issued |
| RE39482 |
Method of making grain-oriented magnetic steel sheet having low iron loss |
February 6, 2007 |
| Grain-oriented magnetic steel sheet made by the method-including hot rolling and final finish annealing, wherein (1) the O content in the steel slab is limited to up to about 30 ppm; (2) for the entire steel sheet having final thickness including an oxide film before final finish a |
| 7371291 |
Grain-oriented magnetic steel sheet having no undercoat film comprising forsterite as primary co |
May 13, 2008 |
| A grain oriented electromagnetic steel sheet is free from an undercoating mainly composed of forsterite (Mg.sub.2SiO.sub.4), excellent in processability and magnetic properties and useful to production cost, and has a composition containing, by % by mass, 2.0 to 8.0% of Si, wherein s |
| 6562473 |
Electrical steel sheet suitable for compact iron core and manufacturing method therefor |
May 13, 2003 |
| Electrical steel sheets having superior magnetic properties, anti-noise properties, and workability, are ideal for use a compact iron core material in electric apparatuses, such as compact transformers, motors, and electric generators. A totally new electrical steel sheet and a manuf |
| 6531001 |
Non-oriented magnetic steel sheet having low iron loss and high magnetic flux density and manufa |
March 11, 2003 |
| Non-oriented magnetic steel sheets, which are mainly used as materials for iron cores for use in electric apparatuses, have a low iron loss and a high magnetic flux density at the same time. The non-oriented magnetic steel sheet comprises from about 1.5 to about 8.0 weight % Si, from abo |
| 6436199 |
Non-oriented magnetic steel sheet having low iron loss and high magnetic flux density and manufa |
August 20, 2002 |
| Non-oriented magnetic steel sheets, which are mainly used as materials for iron cores for use in electric apparatuses, have a low iron loss and a high magnetic flux density at the same time. The non-oriented magnetic steel sheet comprises from about 1.5 to about 8.0 weight % Si, from abo |
| 6432227 |
Electromagnetic steel sheet and process for producing the same |
August 13, 2002 |
| Electromagnetic steel sheet from a high-purity steel slab, composed essentially of Si 2.0 to 8.0 wt %, Mn 0.005 to 3.0 wt % and Al 0.0010 to 0.012 wt % with each of Se, S, N and O each not more than 30 ppm. |
| 6423157 |
Method of making grain-oriented magnetic steel sheet having low iron loss |
July 23, 2002 |
| Grain-oriented magnetic steel sheet made by the method comprising of hot rolling and final finish annealing, wherein (1) the O content in the steel slab is limited to up to about 30 wtppm; (2) for the entire steel sheet including an oxide film before final finish annealing, from among |
| 6322635 |
Electromagnetic steel sheet and process for producing the same |
November 27, 2001 |
| Electromagnetic steel sheet from a high-purity steel slab, composed essentially of Si 2.0 to 8.0 wt %, Mn 0.005 to 3.0 wt % and Al 0.0010 to 0.012 wt % with each of Se, S, N and O each not more than 30 ppm. |
| 6309473 |
Method of making grain-oriented magnetic steel sheet having low iron loss |
October 30, 2001 |
| Grain-oriented magnetic steel sheet made by the method-including hot rolling and final finish annealing, wherein(1) the O content in the steel slab is limited to up to about 30 ppm;(2) for the entire steel sheet having final thickness including an oxide film before final finish annealing, fr |
| 5666842 |
Method of cold rolling grain-oriented silicon steel sheet having excellent and uniform magnetic |
September 16, 1997 |
| A method of manufacturing a grain-oriented silicon steel sheet having excellent and uniform magnetic characteristics by improving the magnetic flux density of a silicon coil cold rolled to a thin thickness without increasing a Si content. The method comprises controlling steel sheet |
