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Class Information
Number: 148/110
Name: Metal treatment > Process of modifying or maintaining internal physical structure (i.e., microstructure) or chemical properties of metal, process of reactive coating of metal and process of chemical-heat removing (e.g., flame-cutting, etc.) or burning of metal > Magnetic materials > Silicon steel
Description: Processes, restricted to the treatment of steel having at least 0.4% silicon.

Sub-classes under this class:

Class Number Class Name Patents
148/112 Heat treatment 193
148/111 Working 404

Patents under this class:

Patent Number Title Of Patent Date Issued
8157928 Non-oriented electrical steel sheet and production process thereof Apr. 17, 2012
7922834 Non-oriented electrical steel sheet and production process thereof Apr. 12, 2011
7465361 Method for producing grain oriented magnetic steel sheet and grain oriented magnetic steel sheet Dec. 16, 2008
7442260 Grain-oriented electrical steel sheet superior in electrical characteristics and method of production of same Oct. 28, 2008
7368166 Polymerase chain reaction using metallic glass-coated microwire May. 6, 2008
7364629 Method for manufacturing grain-oriented silicon steel sheets with mirror-like surface Apr. 29, 2008
7282102 Method for manufacturing high silicon grain-oriented electrical steel sheet with superior core loss property Oct. 16, 2007
7233249 Multi-bit encoded glass-coated microwire and articles composed thereof Jun. 19, 2007
6666929 Process for the improvement of the magnetic characteristics in grain oriented electrical silicon steel sheets by laser treatment Dec. 23, 2003
6562473 Electrical steel sheet suitable for compact iron core and manufacturing method therefor May. 13, 2003
6312531 Magnetic composite article and manufacturing method of the same and soft magnetic powder of Fe-Al-Si system alloy used in the composite article Nov. 6, 2001
6280862 Ultra-low iron loss grain-oriented silicon steel sheet Aug. 28, 2001
6136456 Grain oriented electrical steel sheet and method Oct. 24, 2000
5565272 Grain oriented silicon steel sheet having excellent primary film properties Oct. 15, 1996
5547519 Magnesia coating and process for producing grain oriented electrical steel for punching quality Aug. 20, 1996
5417772 Method for producing a magnetic steel strip by direct casting May. 23, 1995
5393321 Method and apparatus for producing strip products by a spray forming technique Feb. 28, 1995
5352490 Method of chemical vapor deposition in a continuous treatment line Oct. 4, 1994
5089061 Method for producing high silicon steel strip in a continuously treating line Feb. 18, 1992
5089062 Drilling of steel sheet Feb. 18, 1992
5085411 Apparatus for processing grain-oriented electrical steel strip Feb. 4, 1992
5080326 Method and apparatus for refining the domain structure of electrical steels by local hot deformation and product thereof Jan. 14, 1992
5062906 Method of making non-oriented electrical steel sheets Nov. 5, 1991
5045129 Process for the production of semiprocessed non oriented grain electrical steel Sep. 3, 1991
5026439 Process for preparing wound core having low core loss Jun. 25, 1991
5013373 Method for treating electrical steel by electroetching and electrical steel having permanent domain refinement May. 7, 1991
4968361 Method of domain refinement of oriented silicon steel by using flux-printing Nov. 6, 1990
4904312 Method of electrolytically etching linear impressions in electrical steel Feb. 27, 1990
4832762 Method for producing thin steel sheet of high magnetic permeability May. 23, 1989
4439252 Method of producing grain-oriented silicon steel sheets having excellent magnetic properties Mar. 27, 1984
4437909 Process for producing a grain-oriented silicon steel sheet or strip having excellent magnetic properties Mar. 20, 1984
4371405 Process for producing grain-oriented silicon steel strip Feb. 1, 1983
4311538 Method of sealing an inner cover arranged in a box annealing furnace used for producing grain-oriented silicon steel sheets Jan. 19, 1982
4108694 Continuously cast slabs for producing grain-oriented electrical steel sheets having excellent magnetic properties Aug. 22, 1978
4050957 Process for the passivation of ferrosilicon Sep. 27, 1977
4043805 Isotropic and high-strength high silicon steel sheet Aug. 23, 1977
4006044 Steel slab containing silicon for use in electrical sheet and strip manufactured by continuous casting and method for manufacturing thereof Feb. 1, 1977
3986902 Silicon steel suitable for production of oriented silicon steel using low slab reheat temperature Oct. 19, 1976
3960616 Rare earth metal treated cold rolled, non-oriented silicon steel and method of making it Jun. 1, 1976
3935038 Method for manufacturing non-oriented electrical steel sheet and strip having no ridging Jan. 27, 1976

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