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| Number | Title | Issue Date |
| 8034196 | Low core loss grain-oriented electrical steel plate and method of manufacturing the same A grain-oriented electrical steel plate is characterized in that grooves having a width of 10 μm to 200 μm and a depth of 10 μm to 30 μm exist in at least one of a front surface and a rear surface of a steel plate at intervals of 1 mm to 10 mm, an angle between ... | 10/11/2011 |
| 8016951 | Low core loss grain-oriented electrical steel sheet and method for producing the same An object of the present invention is to provide a grain-oriented electrical steel sheet with low core loss and low magnetostriction and a method for producing the same. The grain-oriented electrical steel sheet is excellent in reduced core loss and magnetostriction... | 09/13/2011 |
| 7998284 | Grain-oriented electrical steel sheet having high tensile strength insulating film and method of treatment of such insulating film Grain-oriented electrical steel sheet having a chrome-free high tensile strength insulating film characterized by comprising steel sheet on the surface of which is formed an insulating film containing a phosphate and colloidal silica as main ingredients and containi... | 08/16/2011 |
| 7850792 | Grain-oriented electrical steel sheet having insulating film not containing chromium and insulating film agent of same The present invention provides a grain-oriented electrical steel sheet product having a superior corrosion resistance, annealing resistance, film tension, and the like in insulating treatment based on a phosphate not containing chromium and a treatment agent for the... | 12/14/2010 |
| 7815754 | Grain-oriented electrical steel sheet superior in core loss characteristic Grain-oriented electrical steel sheet superior in core loss characteristic containing Si: 0.8 to 7 mass % and having a secondary recrystallized texture with a {110} orientation as the main orientation, characterized in that average deviation angles α, β, and ... | 10/19/2010 |
| 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 |
| 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 |
| 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 |
| 7235910 | Selective etching process for cutting amorphous metal shapes and components made thereof A selective etching process cuts shapes from amorphous metal strip feedstock. The etching process comprises depositing a chemically resistant material to one side of the strip in a pattern that defines the requisite shape, mating the metal strip with a carrier strip... | 06/26/2007 |
| 7230361 | Efficient high-speed electric device using low-loss materials The invention relates generally to an electric device, such as an electric motor, a generator, or a regenerative motor, having a wound stator core made from advanced low-loss material. In preferred embodiments, the electric device is an axial airgap-type configurati... | 06/12/2007 |
| 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 |
| 7184248 | Synthetic pattern exchange configuration for side reading reduction A patterned, synthetic, longitudinally exchange biased GMR sensor is provided which has a narrow effective trackwidth and reduced side reading. The advantageous properties of the sensor are obtained by satisfying a novel relationship between the magnetizations (M) o... | 02/27/2007 |
| 7152304 | Method for fabricating a patterned, synthetic transverse exchange biased GMR sensor Patterned, longitudinally and transversely antiferromagnetically exchange biased GMR sensors are provided which have narrow effective trackwidths and reduced side reading. The exchange biasing significantly reduces signals produced by the portion of the ferromagneti... | 12/26/2006 |
| 7144468 | Method of constructing a unitary amorphous metal component for an electric machine A unitary amorphous metal magnetic component for an axial flux electric machine such as a motor or generator is formed from a spirally wound annular cylinder of ferromagnetic amorphous metal strips. The cylinder is adhesively bonded and provided with a plurality of ... | 12/05/2006 |
| 7134186 | Method for fabricating a patterned, synthetic transversely exchanged biased GMR sensor Patterned, longitudinally and transversely antiferromagnetically exchange biased GMR sensors are provided which have narrow effective trackwidths and reduced side reading. The exchange biasing significantly reduces signals produced by the portion of the ferromagneti... | 11/14/2006 |
| 7132019 | Amorphous soft magnetic alloy powder, and dust core and wave absorber using the same An amorphous soft magnetic alloy powder which is produced by a water atomization method is provided. The powder contains an amorphous phase having a temperature interval ΔTx of a supercooled liquid of 20K or more; having a hardness Hv of 1000 or less; is provided w... | 11/07/2006 |
| 7123452 | Spin-valve GMR with patterned synthetic exchange bias A GMR bottom spin valve sensor longitudinally exchange biased with a zero net magnetic moment biasing multi-layer is provided, together with a method of forming said sensor. The sensor may be additionally biased with a hard biasing layer formed against an abutted ju... | 10/17/2006 |
| 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 |
| 7041148 | Coated ferromagnetic particles and compositions containing the same High-permeability, low-core-loss soft magnetic composite materials, compositions containing the same, and methods for making the same are described. These magnetic materials are made by forming fiber or flake shaped particles from a ferromagnetic material, annealing... | 05/09/2006 |
| 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 |
| 7010848 | Synthetic pattern exchange configuration for side reading reduction A patterned, synthetic, longitudinally exchange biased GMR sensor is provided which has a narrow effective trackwidth and reduced side reading. The advantageous properties of the sensor are obtained by satisfying a novel relationship between the magnetizations (M) o... | 03/14/2006 |
| 6942740 | 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... | 09/13/2005 |
| 6943994 | Design of canted synthetic pattern exchange spin valve head for improving stability and bias A GMR sensor comprising a sensor element having a spin valve configuration with a synthetic antiferromagnetic pinned layer and further comprising a ferromagnetic free layer biased by synthetic exchange biasing in a direction canted relative to the air bearing surfac... | 09/13/2005 |
| 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 |
| 6918966 | Low iron loss and low noise grain-oriented electrical steel sheet and a method for producing the same The object of the present invention is to provide a low iron loss and low noise grain-oriented electrical steel sheet for securing both low core loss and low noise of a transformer at the same time. The present invention relates to a grain-oriented electrical... | 07/19/2005 |
| 6908026 | Method and apparatus for making a lid with an optically transmissive window A metal plate (126) has a plurality of openings (127) extending through it, and is cleaned using a wet hydrogen process (157). Glass windows (106) are then placed in the openings, and are each fused to the metal plate by heat (231)... | 06/21/2005 |
| 6905558 | Billet by continuous casting and manufacturing method for the same A billet produced by continuous casting having little central segregation, in particular a billet of high carbon steel produced by continuous casting, and a manufacturing method therefor are provided. In the continuous casting billet, the size of the dendritic equia... | 06/14/2005 |
| 6811900 | Unidirectional silicon steel sheet of ultra-low iron loss and method for production thereof When plural-layer ceramic coatings are formed on a surface of an grain-oriented silicon steel sheet after finish annealing according to the invention, TiNO coating is formed as a first coating layer by a hollow cathode process under an application of a high bias vol... | 11/02/2004 |
| 6758915 | Grain oriented electromagnetic steel sheet exhibiting extremely small watt loss and method for producing the same The invention is a grain-oriented magnetic steel sheet having extremely low iron loss, suitable for use as an iron core material for transformers and power generators, and a method for producing the same. The method includes forming a coating layer on a surface of a... | 07/06/2004 |
| 6723914 | Composite magnetic tape There is provided a composite magnetic tape which can be easily applied irrespective of the inside or outside of an electronic equipment, prevent radiation of undesired electromagnetic waves from the inside of the equipment and reflection into the inside of the equi... | 04/20/2004 |
| 6602357 | Grain oriented electrical steel sheet with low iron loss and production method for same A grain oriented electrical steel sheet comprises metal part containing Si: about 2.5 to about 5.0 mass % and Cr: about 0.05 to about 1.0 mass %, and an insulation coating formed on a surface of the metal part. A tension imparted to the metal part in the ... | 08/05/2003 |
| 6565674 | High flux density grain-oriented electrical steel sheet excellent in high magnetic field core loss property and method of producing the same A high flux density grain-oriented electrical steel sheet excellent in high magnetic field core loss property containing, in percentage by weight, not greater than 0.005% of C, 2.0-7.0% of Si, not greater than 0.2% of Mn, one or both of S and Se in a tota... | 05/20/2003 |
| 6562473 | Electrical steel sheet suitable for compact iron core and manufacturing method therefor 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 elect... | 05/13/2003 |
| 6527876 | Silicon steel sheet and method for producing the same A silicon steel sheet having low iron loss of high frequency has a surface layer of the steel sheet which has Si concentration higher than Si concentration of a center portion of the steel sheet. Si concentration of sheet thickness center is 3.4 wt. % or ... | 03/04/2003 |
| 6488784 | Process for the production of grain oriented electrical steel strips By forming, after the annealing of the continuously cast body, a limited number of precipitates apt to the control of the grain growth, and utilising a cold rolling reduction ratio of at least 70%, it is possible to obtain in a subsequent step of continuo... | 12/03/2002 |
| 6475304 | Grain-oriented silicon steel sheet and process for production thereof Grain-oriented silicon steel sheet with Bi as an auxiliary inhibitor and a forsterite coating film having a Cr spinel oxide subscale of FeCr2 O4 or Fex Mn1-x Cr2 O4 (0.6ࣘxࣘ1), made from... | 11/05/2002 |
| 6432227 | Electromagnetic steel sheet and process for producing the same 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.... | 08/13/2002 |
| 6423157 | Method of making grain-oriented magnetic steel sheet having low iron loss 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 ... | 07/23/2002 |
| 6409845 | Elastic component for a precision instrument and process for its manufacture An elastic component for a precision measuring instrument is made from an austenitic metal alloy containing less than two percent ferrite, less than two percent martensite, and more than eleven percent chromium. The crystalline texture has a nano-structur... | 06/25/2002 |
