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| Number | Title | Issue Date |
| 8157928 | Non-oriented electrical steel sheet and production process thereof A main object thereof is to provide a non-oriented electrical steel sheet being excellent in surface characteristics and having both excellent mechanical characteristics and magnetic characteristics necessary for a rotor of rotating machines such as motors and gener... | 04/17/2012 |
| 8097094 | High-strength electrical steel sheet and processed part of same The present invention has as its object to stably produce a high strength electrical steel sheet and a processed part of the same which is high in strength and has wear resistant and is superior in magnetic flux density and core loss without greatly changing the col... | 01/17/2012 |
| 7922834 | Non-oriented electrical steel sheet and production process thereof A main object thereof is to provide a non-oriented electrical steel sheet being excellent in surface characteristics and having both excellent mechanical characteristics and magnetic characteristics necessary for a rotor of rotating machines such as motors and gener... | 04/12/2011 |
| 7799147 | Flaky soft magnetic metal powder and magnetic core member for RFID antenna The performance index μ′×Q of a magnetic core member, in which an Fe—Si—Cr alloy is used, is further improved. A flaky soft magnetic metal powder, which is used in a magnetic core member for an RFID antenna comprising the above flaky soft magnetic metal powd... | 09/21/2010 |
| 7767035 | Metallic magnetic material for magnetic element of a choke coil and SMD choke coil A metallic magnetic material for magnetic element for magnetic element of a choke coil and an SMD choke power coil for accommodating low voltage and high current in a personal computer, graphic card, high frequency power supply, etc, is prepared by baking a powder o... | 08/03/2010 |
| 7763122 | Non-oriented electrical steel sheets with improved magnetic property and method for manufacturing the same The invention relates to a non-oriented electrical steel sheet, widely used as an iron core in electric devices, and to a method of manufacturing the same. The non-oriented electrical sheet includes 0.004 wt. % or less C; 1.0-3.5 wt. % Si; 0.02 wt. % or less P; 0.00... | 07/27/2010 |
| 7678204 | Good-workability and high-strength cold-rolled steel sheet excellent in post-painting corrosion resistance The present invention: provides a good-workability and high-strength cold-rolled steel sheet excellent in post-painting corrosion resistance to the extent of securing excellent resistance to salt warm water immersion which is a good-workability and high-strength col... | 03/16/2010 |
| 7513959 | Non-oriented electrical steel sheet and method for manufacturing the same When a non-oriented electrical steel sheet is manufactured, simultaneously having superior magnetic properties and high strengths, a composition containing 0.02% or less of C, 4.5% or less of Si, 5.0% or less (including 0) of Ni, and 0.2% to 4.0% of Cu is used, and ... | 04/07/2009 |
| 7501029 | High-strength, high-permeability steel sheet for picture tube band and method of producing the same A high-strength, high-permeability steel sheet for picture tube band comprises, in mass percent, C: 0.003-0.010%, Si: 0.5-1.0%, Mn: 1.0-2.0%, P: 0.04-0.15%, S: not more than 0.02%, Al: not more than 0.030%, N: not more than 0.004% and the balance of Fe and unavoidab... | 03/10/2009 |
| 7465364 | Fe-Cr-Si based non-oriented electromagnetic steel sheet and process for producing the same An Fe—Cr—Si based non-oriented electrical steel sheet contains 2.5% to 10% by mass of Si, 1.5% to 20% by mass of Cr, 0.006% by mass or less of C, 0.002% by mass or less of N, 0.005% by mass or less of S, 0.005% by mass or less of Ti, 0.005% by mass or less of Nb... | 12/16/2008 |
| 7442263 | Magnetic amplifier choke (magamp choke) with a magnetic core, use of magnetic amplifiers and method for producing softmagnetic cores for magnetic amplifiers The invention relates to a transductor regulator with a magnetic core which is made up of a nanocrystalline alloy which is almost free of magnetorestriction. The core has as low cyclic magnetization losses as possible and as rectangular a hysterisis cycle as possibl... | 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 |
| 7371271 | Composite soft magnetic sintered material having high density and high magnetic permeability and method for preparation thereof An object of the present invention is to provide a composite soft magnetic sintered material that has high density, high mechanical strength and high relative magnetic permeability at high frequencies and, in order to achieve this object, the present invention provi... | 05/13/2008 |
| 7358844 | Current transformer core and method for producing a current transformer core A current transformer core has a ratio of the core outside diameter Da to the core inside diameter Di of | 04/15/2008 |
| 7285196 | Methods and apparatus for making integrated-circuit wiring from copper, silver, gold, and other metals In recent years, copper wiring has emerged as a promising substitute for the aluminum wiring in integrated circuits, because copper offers lower electrical resistance and better reliability at smaller dimensions than aluminum. However, use of copper typically requir... | 10/23/2007 |
| 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 |
| 7195680 | Soft magnetic alloy for clock-making The invention relates to a soft magnetic alloy with the following composition in wt. %: 28%≦Ni≦34%, 0%≦Co≦4%, 0%≦Cu≦4%, 1%≦Cr, 0%≦Mo≦8%, 0%≦Nb≦1%, 0%≦Mn≦2%, 0%≦V≦5%, 0%≦W≦5%, 0%≦Si≦4%, 0%≦Al≦4%, 0%≦C≦0.4%, optionally one... | 03/27/2007 |
| 7175794 | Method for manufacturing a pressed part from a soft magnetic composite material A method for manufacturing a pressed part from a soft magnetic composite material. A starting mixture is provided that includes an iron powder and an auxiliary pressing agent. The starting mixture is pressed to form a pressed part and annealed at temperatures betwee... | 02/13/2007 |
| 7156154 | Device for continuous or semi-continuous casting of metal material The present invention relates to a device for continuous or semi-continuous casting of a metal material. The device comprises a first arrangement comprising a coil (7) having an extension around the casting mould (2) in an area, which is arranged to co... | 01/02/2007 |
| 7141127 | Low core loss magnetic alloy with high saturation magnetic flux density and magnetic parts made of same A low core loss magnetic alloy with a high saturation magnetic flux density, which has a composition represented by the general formula: (Fel-aCoa)100-y-cM′yX′c(atomic %) where M′ repre... | 11/28/2006 |
| 7138188 | Magnetic implement using magnetic metal ribbon coated with insulator A magnetic ribbon or sheet is coated with an electrical insulator prior to formation of a magnetic implement. Manufacture of the magnetic implement is accomplished in a single process without a need for co-winding magnetic and insulator ribbons. Thermal property dif... | 11/21/2006 |
| 7063780 | Method for indirect-electrification-type continuous electrolytic etching of metal strip and apparatus for indirect-electrification-type continuous electrolytic etching The present invention provides a method for indirect-electrification-type continuous electrolytic etching of a metal strip suitable for producing a low-core-loss, grain-oriented silicon steel sheet not susceptible to the deterioration of core loss after stress-relie... | 06/20/2006 |
| 7063754 | Magnetic material for magnetic refrigeration and method for producing thereof The magnetic material for magnetic refrigeration according to the present invention has an NaZn13-type crystalline structure and comprises iron (Fe) as a principal element (more specifically, Fe is substituted for the position of “Zn”) and hydrogen (H... | 06/20/2006 |
| 7056595 | Magnetic implement using magnetic metal ribbon coated with insulator A magnetic ribbon or sheet is coated with an electrical insulator prior to formation of a magnetic implement. Manufacture of the magnetic implement is accomplished in a single process without need for co-winding magnetic and insulator ribbons. Thermal property diffe... | 06/06/2006 |
| 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 |
| 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 |
| 6852174 | Powder magnetic core There is disclosed a powder magnetic core in which a permeability does not easily drop even when an applied magnetic field intensifies, comprising: a bulk body containing a main component of a powder of an Fe-base alloy having a soft magnetic property, and the balan... | 02/08/2005 |
| 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 |
| 6800146 | Magnetic circuit member A magnetic circuit member contains a matrix portion including iron and silicon; and graphite particles in the matrix. Each of the graphite particles has either a spherical shape or a compact vermicular shape. The inclusion of graphite particles having a relatively l... | 10/05/2004 |
| 6797410 | High tensile strength hot dip plated steel and method for production thereof A steel composition, in which, Si content is regulated to a given range and Nb and Cu or Ni, Mo are compositively added, and a recrystallization annealing is carried out to form an internal oxide layer just beneath a surface of a steel sheet and a surface oxide simu... | 09/28/2004 |
| 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 |
| 6723179 | Soft magnetism alloy powder, treating method thereof, soft magnetism alloy formed body, and production method thereof A soft magnetism metal powder having a majority of particles, each of which, when cross-sectioned, has no greater than ten crystal particles on average, may be coated on an outer surface of each of the particles with a resistive material having a higher resistivity ... | 04/20/2004 |
| 6714114 | Magnetic sticking sheet and method of producing same A magnetic sticking sheet comprising a non-magnetic base and a magnetic layer formed on the non-magnetic base by coating a magnetic coating material containing ferromagnetic particles and a binder, the magnetic layer having a thickness of 0.03 to 0.10 mm, oriented l... | 03/30/2004 |
| 6635125 | Grain-oriented electrical steel sheet excellent in film characteristics and magnetic characteristics, process for producing same, and decarburization annealing facility used in same process A grain-oriented electrical steel sheet excellent in film and iron loss characteristics. The steel sheet contains up to 0.005% of C, 2.0 to 7.0& Si in terms of weight % and the balance iron and unavoidable impurities. An oxide film which mainly contains f... | 10/21/2003 |
| 6627005 | High fatigue-strength steel wire and spring, and processes for producing these A steel wire of pearlite structure containing 0.8-1.0 mass % of C and 0.8-1.5 mass % of Si is disclosed. In the cross section of the steel wire the average hardness in a region up to 100 μm from the surface thereof is at least 50 higher that that in a de... | 09/30/2003 |
| 6599468 | Powder compacting apparatus and method of making rare-earth alloy magnetic powder compact The present invention provides a powder compacting apparatus including: a die having a through hole forming a cavity; a first punch and a second punch for pressing a rare-earth alloy magnetic powder filled in the cavity; and a magnetic field generator for... | 07/29/2003 |
| 6569265 | Electrical steel with improved magnetic properties in the rolling direction A method of making electrical steel strip characterized by low core loss and high permeability in the rolling direction includes the steps of: hot rolling a slab of an electrical steel composition into a strip, hot band annealing in a temperature range ef... | 05/27/2003 |
