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| Number | Title | Issue Date |
| 8172956 | Sintered soft magnetic powder molded body A sintered soft magnetic powder molded body having a composition containing Fe, 44 to 50% by mass of Ni and 2 to 6% by mass of Si, or a composition containing Fe and 2 to 6% by mass of Si, wherein the Si is unevenly distributed among particles, is provided. ... | 05/08/2012 |
| 8133329 | Selective sintering of compacted components One embodiment includes compacting a powder material using at least a first magnetic field to form a compact and selectively sintering a first portion of the compact and leaving a second portion of the compact unsintered to form a component. ... | 03/13/2012 |
| 8092616 | Method for producing a giant magnetostrictive alloy A rapidly solidified Fe—Ga alloy containing 15 to 23 atomic percent of Ga having a particular rapidly solidified texture is formed into slices which are laminated to each other in a die, or is formed into a powder or chops which are filled in the die. Subsequently... | 01/10/2012 |
| 8092615 | Composition for producing soft magnetic composites by powder metallurgy The invention concerns powder compositions consisting of electrically insulated particles of a soft magnetic material of an iron or iron-based powder and 0.1-2% by weight of a lubricant selected from the group consisting of fatty acid amides having 14-22 C atoms. Op... | 01/10/2012 |
| 8029626 | Method for producing soft magnetic powdered core A method for producing a soft magnetic powdered core comprises a mixing step for forming a raw powder by adding a thermoplastic resin powder to a soft magnetic powder and mixing them, a compacting step for forming a compact by compacting the raw powder into a predet... | 10/04/2011 |
| 7871474 | Method for manufacturing of insulated soft magnetic metal powder formed body A method for manufacturing bodies formed from insulated soft magnetic metal powder by forming an insulating film of an inorganic substance on the surface of particles of a soft magnetic metal powder, compacting and molding the powder, then carrying out a heat treatm... | 01/18/2011 |
| 7785424 | Method of making a magnetic core part Magnetic powder contained in a resin composition for use in injection molding is coated with an insulating material, and a soft magnetic green compact or a hard magnetic green compact is insert molded into the resin composition. Increased magnetic flux destiny, redu... | 08/31/2010 |
| 7758706 | Method for producing dust core compact and dust core compact A method for producing a dust core compact includes the steps of forming a compact component by pressure-forming a soft magnetic powder having an average particle diameter Da under a pressure Pa, and forming a compact by pressure-forming a soft magnetic powder havin... | 07/20/2010 |
| 7686894 | Magnetically soft powder composite material, method for manufacturing same, and its use A magnetically soft powder composite material is described, which is composed of at least 99.4 wt. % of a pure iron powder, a phosphatized iron powder, or an iron alloy powder and 0.05 wt. % to 0.6 wt. % of a soft ferrite powder and which is primarily suited for use... | 03/30/2010 |
| 7470332 | Production method for soft magnetic sintered member A soft magnetic sintered member having uniform dispersion of alloy elements and a production method for the same at low cost are provided. The soft magnetic sintered member consists of, all in mass %, 2.9 to 7% of Cr; 1.5 to 6.88% of Si; and the balance of Fe and in... | 12/30/2008 |
| 7381280 | Manufacturing methods of flexible bonded magnet and motor using the same Methods for manufacturing a flexible bonded magnet, and a high-efficiency small motor using the magnet are disclosed. The flexible bonded magnet is manufactured through the processes of compressing a new compound consisting of flexible thermosetting resin composite ... | 06/03/2008 |
| 7371290 | Production method for permanent magnet and press device To avoid various problems caused by remnant magnetization and produce an anisotropic bonded magnet at a reduced cost, a method for producing an anisotropic bonded magnet by feeding a magnetic powder (such as an HDDR powder) into the cavity of a press machine and com... | 05/13/2008 |
| 7357880 | Composite rare-earth anisotropic bonded magnet, composite rare-earth anisotropic bonded magnet compound, and methods for their production The bonded magnet of the present invention, in which average particle diameter and compounding ratio are specified, is comprised of Cobalt-less R1 d-HDDR coarse magnet powder that has been surface coated with surfactant, R2 fine magnet powder that has been surface c... | 04/15/2008 |
| 7344653 | Method for producing and magnetising a bitumen film containing magnetic powder A bitumen film containing magnetic powder is heated prior to magnetization to a temperature enabling the magnetic powder particles to be oriented according to the effect of the magnetic field. The bitumen film is sufficiently cooled after magnetization in order to p... | 03/18/2008 |
| 7335392 | Method for producing corrosion-resistant rare earth metal-based permanent magnet The objectives of the present invention are to provide a stable and simple method for producing a rare earth metal-based permanent magnet having on the surface thereof a corrosion-resistant film containing fine zinc particles dispersed therein, a corrosion-resistant... | 02/26/2008 |
| 7332792 | Magnetic layer processing A dielectric layer is formed over a substrate comprising a semiconductor material. A magnetic layer is formed over the dielectric layer. The magnetic layer comprises an amorphous alloy comprising cobalt. ... | 02/19/2008 |
| 7328500 | Method of manufacturing laminated polar anisotropic hybrid magnet Disclosed is a method of manufacturing a laminated polar anisotropic hybrid magnet, which includes separately mixing first permanent magnet powders having low magnetic properties and second permanent magnet powders having high magnetic properties with a thermoplasti... | 02/12/2008 |
| 7300600 | Rare earth bonded magnet including amino-acid compound as lubricant In a rare earth bonded magnet comprising a mixture of rare earth magnetic powder, thermosetting resin, and lubricant, the lubricant is constituted by amino-acid compound, specifically either N-lauroyl-L-lysine or N-lauroyl-asparaginic acid. The content of the amino-... | 11/27/2007 |
| 7273405 | Sintered rare earth magnetic alloy wafer and wafer surface growing machine A method of producing a sintered rare earth magnetic alloy wafer comprises a step of using a cutter to slice a wafer of a thickness of not greater than 3 mm from a sintered rare earth magnetic alloy having ferromagnetic crystal grains surrounded by a more readily gr... | 09/25/2007 |
| 7273527 | Production method for powdered core The present invention provides a production method for a powdered core, including steps of preparing a mixture including a soft magnetic powder and a resin powder to obtain a mixture, compacting the mixture into a predetermined shape to obtain a green compact and he... | 09/25/2007 |
| 7273135 | Low cost magnetic brakes and motion control devices manufactured from conductive loaded resin-based materials Magnetic brake components are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductive powder(s), conductive fiber(s), or a combination of conductive powder and conductive fibers in a base resin host.... | 09/25/2007 |
| 7261781 | Nanocomposite magnet A nanocomposite magnet has a composition represented by (Fe1-mTm)100-x-y-z-nQxRyTizMn, where T is at least one of Co and Ni, Q is at least one of B and C, R is at least one rare earth eleme... | 08/28/2007 |
| 7258812 | Compound magnetic material and fabrication method thereof A compound magnetic material having high heat resistance is provided. A fabrication method of a compound magnetic material includes the step of preparing mixed powder including an organic resin and compound magnetic particles. The long-period heat resistance tempera... | 08/21/2007 |
| 7244318 | Method for preparation of permanent magnet A blended powder including a first powder containing an R2T14B phase as a main phase, and a second powder containing an R2T17 phase at 25 wt % or more of the whole is prepared. Herein, R is at least one element selected fr... | 07/17/2007 |
| 7235208 | Dust core A dust core consists essentially of ferromagnetic powder; and an insulating binder, in which the ferromagnetic powder is dispersed; wherein the insulating binder is a silicone resin comprising a trifunctional alkyl-phenyl silicone resin and optionally containing an ... | 06/26/2007 |
| 7230514 | Inductive component and method for producing same Inductive component (10; 20; 30) having at least one coil (12; 22; 32) and a magnetically soft core (11; 21; 31) made from a ferromagnetic powder composite in which the ferromagnetic powder composite shows an alloy powder mixture made from alloy... | 06/12/2007 |
| 7219416 | Method of manufacturing a magnetic element The present invention provides a composite magnetic body containing metallic magnetic powder and thermosetting resin and having a packing ratio of the metallic magnetic powder of 65 vol % to 90 vol % and an electrical resistivity of at least 104 Ω·cm. W... | 05/22/2007 |
| 7211158 | Production method for powdered core The present invention provides a production method for a powdered core, including steps of preparing a mixture including a soft magnetic powder and a resin powder to obtain a mixture, compacting the mixture into a predetermined shape to obtain a green compact and he... | 05/01/2007 |
| 7211157 | Rare-earth alloy, rare-earth sintered magnet, and methods of manufacturing A rare-earth alloy ingot is produced by melting an alloy composed of 20–30 wt % of a rare-earth constituent which is Sm alone or at least 50 wt % Sm in combination with at least one other rare-earth element, 10–45 wt % of Fe, 1–10 wt % of Cu and 0.5–5 wt % o... | 05/01/2007 |
| 7196520 | Method and apparatus for passive shimming of magnets An apparatus and method for shimming a magnetic field of a magnet in a volume of interest includes a nonmagnetic holder configured with an array of fluid containing pockets; and a solidified ferromagnetic fluid in each pocket of the array of fluid containing pockets... | 03/27/2007 |
| 7175717 | Method for making nano-scale grain metal powders having excellent high-frequency characteristic and method for making high-frequency soft magnetic core using the same A method for making a nano-scale amorphous soft magnetic powders obtained by thermally processing and crystallizing amorphous ribbons produced using a rapid solidification process (RSP) and crushing the same. The amorphous soft magnetic core having an excellent high... | 02/13/2007 |
| 7175687 | Advanced erosion-corrosion resistant boride cermets A cermet composition represented by the formula (PQ)(RS) comprising: a ceramic phase (PQ) and binder phase (RS) wherein, P is at least one metal selected from the group consisting of Group IV, Group V, Group VI elements, Q is boride, ... | 02/13/2007 |
| 7172660 | Method for making Fe-based amorphous metal powders and method for making soft magnetic core using the same A method for making an amorphous soft magnetic core using Fe-based amorphous metal powders is provided. The amorphous soft magnetic powders are obtained by crushing amorphous ribbons produced using a rapid solidification process (RSP). The magnetic core is obtained ... | 02/06/2007 |
| 7163591 | Method of preparing micro-structured powder for bonded magnets having high coercivity and magnet powder prepared by the same Disclosed is a method of preparing a micro-structured powder for bonded magnets having high coercivity, which is advantageous in terms of low preparation costs by recycling magnet scraps, simplified mass production, minimal environmental contamination by such a recy... | 01/16/2007 |
| 7141126 | Rare earth magnet and method for manufacturing the same Rare earth alloy powder having an oxygen content of 50 to 4000 wt. ppm and a nitrogen content of 150 to 1500 wt. ppm is compacted by dry pressing to produce a compact. The compact is impregnated with an oil agent and then sintered. The sintering process includes a f... | 11/28/2006 |
| 7138019 | Method for producing magnetostrictive element and sintering method In the step of sintering a compact that is finally to be a magnetostrictive element, when the temperature in a furnace is elevated, the atmosphere in the furnace is evacuated by a vacuum pump to keep the pressure in the furnace at negative pressure in a temperature ... | 11/21/2006 |
| 7056393 | Method of making sintered compact for rare earth magnet A method of making a sintered body for a rare earth magnet includes the steps of (a) preparing a first coarse powder by coarsely pulverizing a rare earth alloy sintered body by a hydrogen pulverization process, (b) preparing a first fine powder by finely pulverizing... | 06/06/2006 |
| 7048808 | Rare-earth sintered magnet and method of producing the same The present invention provides a rare-earth sintered magnet exhibiting desirable magnetic properties in which the amount of Nd and/or Pr forming a non-magnetic phase in a grain boundary phase is reduced. Specifically, the present invention provides a rare-earth sint... | 05/23/2006 |
| 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 |
| 7037465 | Powder compacting method, powder compacting apparatus and method for producing rare earth magnet A powder compacting method includes the steps of: providing a powder material; loading the powder material into a cavity; uniaxially pressing the powder material, which has been loaded into the cavity, between two opposed press surfaces, thereby obtaining a compact,... | 05/02/2006 |
