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| Number | Title | Issue Date |
| 8088229 | Method for producing grain oriented magnetic steel strip A method for producing high-quality grain oriented magnetic steel sheet utilizes a steel alloy with (in wt %) Si: 2.5-4.0%, C: 0.02-0.10%, Al: 0.01-0.065%, N: 0.003-0.015%. The method utilizes an operational sequence whose individual steps (secondary metallurgical t... | 01/03/2012 |
| 8038806 | Method for producing grain oriented magnetic steel strip A method, which makes it possible to economically produce high-quality grain oriented magnetic steel sheet, utilizes a steel alloy with (in wt %) Si: 2.5-4.0%, C: 0.01-0.10 %, Mn: 0.02-0.50%, S and Se in contents, whose total amounts to 0.005-0.04%. The method utili... | 10/18/2011 |
| 7981223 | Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same The present invention is a grain-oriented electrical steel sheet characterized in that Bi is present at 0.01 to less than 1,000 ppm in terms of mass at the interface of the substrate steel and the primary film of the grain-oriented electrical steel sheet. The grain-... | 07/19/2011 |
| 7976645 | Method of production of grain-oriented electrical steel sheet having a high magnetic flux density In a production of grain-oriented electrical steel sheet that is heated at a temperature of not higher than 1350° C., (a) the hot-rolled sheet is heated to a prescribed temperature of 1000° C. to 1150° C., and after recrystallization is annealed for a required ti... | 07/12/2011 |
| 7976644 | Method of production of grain-oriented electrical steel sheet with high magnetic flux density The present invention provides a method of production of grain-oriented electrical steel sheet comprising making a slab heating temperature 1280° C. or less, annealing hot rolled sheet by (a) a process of heating it to a predetermined temperature of 1000 to 1150° ... | 07/12/2011 |
| 7887645 | High permeability grain oriented electrical steel The present invention provides a method of producing a high permeability grain oriented electrical steel having excellent mechanical and magnetic properties. A hot band having a thickness of about 1.5 to about 4.0 mm has a chemistry comprising about 2.5 to about 4.5... | 02/15/2011 |
| 7883586 | Method for production and apparatus for production of grain-oriented electrical steel sheet excellent in magnetic properties Technology scanning and irradiating grain-oriented electrical steel sheet moving in a rolling direction at a speed Vl with an elliptical spot formed by a laser beam in the width direction at Vc to improve the core loss of the grain-oriented electrical steel sheet, w... | 02/08/2011 |
| 7857915 | Grain-oriented electrical steel sheet extremely excellent in magnetic properties and method of production of same Reheating a grain-oriented electrical steel sheet slab comprising predetermined components to 1280° C. or more and a solid solution temperature of inhibitor substances or more, hot rolling, annealing, and cold rolling it, decarburization annealing it, nitriding it ... | 12/28/2010 |
| 7846271 | Non-oriented electrical steel sheets with excellent magnetic properties and method for manufacturing the same The present invention relates to technology for manufacturing electrical steel sheets having excellent magnetic properties through the control of a hot-rolled texture using the phase transformation of steel. More particularly, it relates to a non-oriented electrical... | 12/07/2010 |
| 7566371 | Non-oriented electrical steel sheet excellent in magnetic properties in rolling direction and method of production of same Non-oriented electrical steel sheet remarkably improved in magnetic properties in the rolling direction by a method superior in cost and productivity, that is, non-oriented electrical steel sheet excellent in magnetic properties in the rolling direction comprising, ... | 07/28/2009 |
| 7501028 | Non-grain oriented magnetic steel strip or magnetic steel sheet and method for its production The invention relates to non-grain oriented magnetic steel sheets which can be produced as final annealed and as a non-final annealed types in such a way that they have improved magnetic polarisation and reduced magnetic reversal losses compared with the previously ... | 03/10/2009 |
| 7470333 | Non-oriented electrical steel sheet excellent in core loss and manufacturing method thereof A non-oriented electrical steel sheet is characterized in that the number density of inclusions with an equivalent volume diameter of less than 100 nm contained in the steel sheet is 1×1010 [/mm3] or less, and that the steel sheet contains, by... | 12/30/2008 |
| 7465361 | Method for producing grain oriented magnetic steel sheet and grain oriented magnetic steel sheet In a method for manufacturing a grain-oriented electrical steel sheet using steel containing less than 100 ppm of Al and 50 ppm or less each of N, S, and Se as a starting material, purification annealing is performed at 1050° C. or more, the partial pressure of hyd... | 12/16/2008 |
| 7442260 | Grain-oriented electrical steel sheet superior in electrical characteristics and method of production of same The present invention provides a grain-oriented electrical steel sheet with an extremely low core loss by scanning by a small focused laser beam spot and a method of production of the same, that is, a grain-oriented electrical steel sheet improved in electrical char... | 10/28/2008 |
| 7399369 | Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same The present invention is a grain-oriented electrical steel sheet characterized in that Bi is present at 0.01 to less than 1,000 ppm in terms of mass at the interface of the substrate steel and the primary film of the grain-oriented electrical steel sheet. The grain-... | 07/15/2008 |
| 7377986 | Method for production of non-oriented electrical steel strip The present invention relates to a method for producing a non-oriented electrical steel with improved magnetic properties and improved resistance to ridging, brittleness, nozzle clogging and magnetic aging. The chromium bearing steel is produced from a steel melt wh... | 05/27/2008 |
| 7371296 | Annealing furnace cooling and purging system and method In a method and system for an improved annealing furnace cooling and purging, atmosphere injection jets are provided in close proximity to a bottom of a tray carrying a lamination product in a cooling section. Atmospheric extraction tubes are also provided extractin... | 05/13/2008 |
| 7371291 | Grain-oriented magnetic steel sheet having no undercoat film comprising forsterite as primary component and having good magnetic characteristics A grain oriented electromagnetic steel sheet is free from an undercoating mainly composed of forsterite (Mg2SiO4), excellent in processability and magnetic properties and useful to production cost, and has a composition containing, by % by mass... | 05/13/2008 |
| 7364629 | Method for manufacturing grain-oriented silicon steel sheets with mirror-like surface In a method for manufacturing grain-oriented silicon steel with mirror-like surface by applying an aqueous slurry of an annealing separator, magnetic properties are stabilized by controlling the amount of moisture, carried in the annealing separator consisting mainl... | 04/29/2008 |
| 7361237 | High-strength isotropic steel, method for making steel plates and resulting plates A steel having a composition, expressed in wt. %, of: 0.03≦C≦0.06; 0.50≦Mn≦1.10; 0.08≦Si≦0.20; 0.015≦Al≦0.070; N≦0.007; Ni≦0.040; Cu≦0.040; P≦0.035; S≦0.015; Mo≦0.008; Ti≦0.005; and boron in an amount such that: 0.65≦B/N≦1.60, the r... | 04/22/2008 |
| 7341096 | Method for processing a continuously cast metal slab or strip, and plate or strip produced in this way The invention relates to a method for processing a continuously cast metal slab or strip, in which the slab or strip is passed between a set of rotating rolls of a rolling mill stand in order to roll the slab or strip. According to the invention, the rolls of the ro... | 03/11/2008 |
| 7291230 | Grain-oriented electrical steel sheet extremely excellent in film adhesiveness and method for producing the same The present invention: relates to a grain-oriented electrical steel sheet and a double-oriented electrical steel sheet which are used as soft magnetic materials for electrical machinery and apparatus; and is a grain-oriented electrical steel sheet extremely excellen... | 11/06/2007 |
| 7282102 | Method for manufacturing high silicon grain-oriented electrical steel sheet with superior core loss property A method for manufacturing a high silicon grain-oriented electrical steel sheet. In a method for manufacturing a high silicon grain-oriented electrical steel sheet, comprising the steps of: reheating and hot-rolling a steel slab to produce a hot-rolled steel sheet; ... | 10/16/2007 |
| 7247211 | Method of manufacture of ultra-low carbon steel A steel sheet with a thickness of at least 0.30 mm is made of an ultra-low carbon steel with a chemical composition including C: at most 0.010%, Si: at most 0.5%, Mn: at most 1.5%, P: at most 0.12%, S: at most 0.030%, Ti: at most 0.10%, Al: at most 0.08%, and N: at ... | 07/24/2007 |
| 7226658 | Electrical sheet having insulating coating and insulating coating A magnetic steel sheet with an insulating coating having a good punchability, high sliding performance, excellent handleability in processing, and good uniformity and adhesiveness is achieved by forming a chromium-free insulating coating containing 20 parts by mass ... | 06/05/2007 |
| 7214277 | Method for manufacturing non-oriented electrical steel sheet having high magnetic flux density A quench solidification method, wherein a steel cast strip having a mean grain size 50 μm or more is prepared and then the steel cast strip is rolled to produce a non-oriented electrical steel sheet having high magnetic flux density in both L and C directions. Howe... | 05/08/2007 |
| 7198682 | Process for the production of grain oriented electrical steel A process for the production of electrical steel strips, in which a strip is directly cast from molten steel and contains alloy elements apt to generate a precipitation of sulphides and/or nitrides apt to inhibit the grain growth. The strip is hot rolled in-line wit... | 04/03/2007 |
| 7192492 | Process for the control of inhibitors distribution in the production of grain oriented electrical steel strips In the production of electrical steel strips, a special islab-reheating treatment before hot rolling is carried out so that the maximum temperature within the furnace is reached by the slab well before its extraction from the furnace. During the heating stage and pe... | 03/20/2007 |
| 7182543 | Joining structure A structure is provided between a first columnar structural member and at least a second structural member in which the stress concentration at the fixed end portion of the reinforcing member with the first columnar structural member and the second structural member... | 02/27/2007 |
| RE39482 | Method of making grain-oriented magnetic steel sheet having low iron loss 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 ... | 02/06/2007 |
| 7155824 | Method of manufacturing an automotive differential having an input pinion A method for fabricating an input pinion for an automotive differential that includes: providing a shaft; forging a pinion with a plurality of teeth such that each tooth is formed to at least a near-net size, forming a hole in the pinion, pressing an end of the shaf... | 01/02/2007 |
| 7074498 | Influence of surface geometry on metal properties The influence of surface geometry on metal properties is studied within the limit of the quantum theory of free electrons. It is shown that a metal surface can be modified with patterned indents to increase the Fermi energy level inside the metal, leading to decreas... | 07/11/2006 |
| 7052574 | Method for producing metal laminate To continuously produce a metal laminate having excellent dimensional stability and flatness, there is provided with a method of producing a metal laminate in which a thermoplastic liquid crystal polymer film (5′) capable of forming an optically anisotropic... | 05/30/2006 |
| 7045025 | Grain-oriented electrical steel sheet excellent in magnetic properties and method for producing the same A low core loss grain-oriented electrical steel sheet that does not have a significant deterioration in a magnetic flux density and a decrease of a space factor, and which may withstand stress-relieving annealing is provided. Melted and re-solidified layers can be f... | 05/16/2006 |
| 7034422 | Radial-axial electromagnetic flux electric motor, coaxial electromagnetic flux electric motor, and rotor for same A rotor for an electrical motor may include a plurality of salient radial field rotor poles and a plurality of salient axial field rotor poles. The radial field rotor poles and the axial field rotor poles are respectively oriented on the rotor to receive or convey s... | 04/25/2006 |
| 7011139 | Method of continuous casting non-oriented electrical steel strip Non-oriented electrical steels are widely used as the magnetic core material in a variety of electrical machinery and devices, particularly in motors where low core loss and high magnetic permeability in all directions of the strip are desired. A method for producin... | 03/14/2006 |
| 6964711 | Process for the production of grain oriented electrical steel strips A process for the production of grain oriented electrical Fe-Si strips in which a Si-containing alloy is directly cast as a strip between 2.5–5.0 mm thick and cold rolled in one stage, or in more stages with intermediate annealing, to a final thickness of between ... | 11/15/2005 |
| 6955925 | Annealing A method and apparatus for annealing an integrated ferroelectric device (10) is disclosed in which the device (10) comprises a first layer of material capable of existing in a ferroelectric state and a second layer of material defining an integrated ci... | 10/18/2005 |
| 6937018 | Systems and methods for fabricating pole pieces for magnetic resonance imaging systems An imaging system including at least one pole piece is described. The at least one pole piece includes at least two grain-oriented sheets that are stacked together, where a direction of easy magnetization of a first of the at least two grain-oriented sheets is diffe... | 08/30/2005 |
| 6929704 | Grain-oriented electromagnetic steel sheet A grain-oriented electromagnetic steel sheet having a multiplicity of fine grains having a diameter of about 3 mm or less on the surface of the steel sheet, in a numerical ratio of about 65% or more and of about 98% or less relative to the constituting grains that p... | 08/16/2005 |
