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| Number | Title | Issue Date |
| RE40524 | Magnet powder-resin compound particles, method for producing such compound particles and resin-bonded rare earth magnets formed therefrom The magnet powder-resin compound particles substantially composed of rare earth magnet powder and a binder resin are in such a round shape that a ratio of the longitudinal size a to the transverse size b (a/b) is more than 1.00 and 3 or less, and that an average par... | 09/30/2008 |
| 7425353 | Enhancement of magnetic media recording performance using ion irradiation to tailor exchange coupling Magnetic medium recording performance can be enhanced by irradiating a magnetic medium with ions having an acceleration voltage of between 10 keV and 100 keV to induce exchange coupling between grains of the magnetic medium. The magnetic medium is exposed to a cumul... | 09/16/2008 |
| RE40348 | Arc segment magnet, ring magnet and method for producing such magnets A thin arc segment magnet made of a an R-T-B based, rare earth sintered magnet substantially comprising 28-33 weight % of R and 0.8-1.5 weight % of B, the balance being substantially Fe T, wherein R is at least one rare earth element including Y, and... | 06/03/2008 |
| 7363827 | Torque sensor system including an elliptically magnetized shaft A torque sensor includes a shaft and a magnetic sensor. The shaft may have at least one active region having an elliptical magnetization. The magnetic sensor may be configured to sense a magnetic field about the shaft, where the magnetic field is representative of a... | 04/29/2008 |
| 7322187 | Metallurgical powder compositions and articles and methods utilizing the same The metallurgical powder composition suspensions of the present invention include a magnetic powder having an outer oxide layer suspended in a carrier fluid. Magnetic powders include iron-based powders, such as for example, powders of iron pre-alloyed with other ele... | 01/29/2008 |
| 7238297 | Composition of matter tailoring: system I The present invention relates to new compositions of matter, particularly metals and alloys, and methods of making such compositions. The new compositions of matter exhibit long-range ordering and unique electronic character. ... | 07/03/2007 |
| 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 |
| 7192491 | Increased damping of magnetization in magnetic materials In order to dampen magnetization changes in magnetic devices, such as magnetic tunnel junctions (MTJ) used in high speed Magnetic Random Access Memory (MRAM), a transition metal selected from the 4d transition metals and 5d transition met... | 03/20/2007 |
| 7144642 | Permanent magnet and method for preparation thereof A ferrite magnet obtained by adding a ferrite having a hexagonal W-type magnetoplumbite structure to a ferrite having a hexagonal M-type magnetoplumbite structure, in which a portion of Sr, Ba, Pb or Ca is replaced with at least one element that is selected from the... | 12/05/2006 |
| 7089648 | Method for fabricating a magnetoresistive head There is provided a magnetoresistive head which can realize high sensitivity and low noise even when the reading track is being reduced. Longitudinal biasing is performed to a ferromagnetic free layer whose magnetization is rotated according to an external magnetic ... | 08/15/2006 |
| 7059768 | Standards for the calibration of a vacuum thermogravimetric analyzer for determination of vapor pressures of compounds The invention provides a set of standards for accurately calibrating a vacuum thermogravimetric analyzer (VTGA). The invention solves the problem of calibrating a VTGA by using the actual magnetic transitions and associated transition temperatures, or Curie temperat... | 06/13/2006 |
| 7056599 | Steel sheet for magnetic shields and manufacturing method thereof A steel sheet for a magnetic shield comprising less than 0.005% by weight of C and 0.0003 to 0.01% by weight of B, and having a thickness of 0.05 to 0.5 mm and an anhysteresis magnetic permeability of 7500 or more. ... | 06/06/2006 |
| 6960240 | Remelting of rare earth magnet scrap and/or sludge, magnet-forming alloy, and sintered rare earth magnet Rare earth magnet scrap and/or sludge is remelted for reuse. Once a rare earth-free magnet-constituent metal feed is loaded in a melting furnace and heated into a melt, a rare earth-containing metal feed and the rare earth magnet scrap and/or sludge are added to the... | 11/01/2005 |
| 6941637 | Method of manufacturing a motor comprising a rare earth thick film magnet The method of manufacturing rare earth thick film magnet comprising a step of forming an alloy layer of 30-100 μm thick having a general formula RXBYTMZ on a substrate by a physical deposition process, and a step of heat-treating th... | 09/13/2005 |
| 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 |
| 6780338 | Method for processing a stent processed with tools containing magnetizing components The subject invention pertains instruments for use in nuclear spin tomography comprising a metal alloy comprising aluminum, vanadium, and titanium. In a specific embodiment, the subject invention relates to cardiovascular stents which can exhibit a low incidence of ... | 08/24/2004 |
| 6635361 | Magnetic shielding steel sheet and method for producing the same A steel sheet for magnetic shields is provided containing 0.15% by weight or less of C and having a thickness of 0.05-0.5 mm and an anhysteretic magnetic permeability of 7500 or higher.... | 10/21/2003 |
| 6623566 | Method of selection of alloy compositions for bulk metallic glasses A method for selecting alloying elements for complex, multi-component amorphous metal alloys is provided in which the solvent element is the largest atom with a concentration of 40-80 at %, the second most concentrated element has a radius of 65-83 % the ... | 09/23/2003 |
| 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 |
| 6538572 | Printed bias magnet for electronic article surveillance marker The present invention replaces the conventional bias magnets for EAS markers with a paintable or printable bias magnet material, which is either directly painted onto the EAS marker or first placed onto a substrate material, which is then placed into the ... | 03/25/2003 |
| 6517934 | Magnetic recording medium containing nanometer-size substantially spherical or ellipsoidal fe-b-re magnetic powder and method for producing magnetic powder A rare earth-iron-boron magnetic powder comprising a rare earth element, iron and boron, which has a coercive force of 80 to 400 kA/m, a saturation magnetization of 10 to 25 μW/g, an average particle size of 5 to 200 nm, and a particulate or ellipsoidal ... | 02/11/2003 |
| 6423386 | Magnet powder-resin compound particles, method for producing such compound particles and resin-bonded rare earth magnets formed therefrom The magnet powder-resin compound particles substantially composed of rare earth magnet powder and a binder resin are in such a round shape that a ratio of the longitudinal size a to the transverse size b (a/b) is more than 1.00 and 3 or less, and that an ... | 07/23/2002 |
| 6423264 | Process for forming rotating electromagnets having soft and hard magnetic components A method of a manufacturing rotating electromagnetic component to have both soft and hard (permanent) magnet regions, in which powder technologies are used to net-shape mold the component. A soft magnet powder material and an insert or powder of a permane... | 07/23/2002 |
| 6416879 | Fe-based amorphous alloy thin strip and core produced using the same The object of the present invention is to provide an Fe-based amorphous alloy thin strip capable of realizing an excellent soft magnetic property for use in alternating current applications while keeping a high magnetic flux density even in a composition ... | 07/09/2002 |
| 6387522 | Grain-oriented electrical steel sheet for low-noise transformer The present invention provides a grain-oriented electrical steel sheet, for a low noise transformer, capable of reducing higher harmonics which are highly audible and lowering noise effectively, and relates to a grain-oriented electrical steel sheet for a... | 05/14/2002 |
| 6383406 | Method for preparing high cure temperature rare earth iron compound magnetic material Insertion of light elements such as H,C, or N in the R2 Fe17 (R=rare earth metal) series has been found to modify the magnetic properties of these compounds, which thus become prospective candidates for high performance permanent mag... | 05/07/2002 |
| 6344168 | Method of producing R-Fe-B type sintered magnet, method of preparing alloy powder material for R-Fe-B type sintered magnet, and method of preserving the same The method of producing an R--Fe--B type sintered magnet according to the present invention includes the steps of: (a) preparing an alloy powder material in a first state, in which a first amount of lubricant has been applied to a surface of an alloy powd... | 02/05/2002 |
| 6328825 | Alloy used for production of a rare-earth magnet and method for producing the same An alloy used for the production of a rare-earth magnet alloy, particularly the boundary-phase alloy in the two-alloy method is provided to improve the crushability. The Alloy consists of (a) from 35 to 60% of Nd, Dy and/or Pr, and the balance being Fe, o... | 12/11/2001 |
| 6312494 | Arc segment magnet, ring magnet and method for producing such magnets A thin arc segment magnet made of a rare earth sintered magnet substantially comprising 28-33 weight % of R and 0.8-1.5 weight % of B, the balance being substantially Fe, wherein R is at least one rare earth element including Y, and T is Fe or Fe and Co, ... | 11/06/2001 |
| 6254662 | Chemical synthesis of monodisperse and magnetic alloy nanocrystal containing thin films A method and structure for forming magnetic alloy nanoparticles includes forming a metal salt solution with a reducing agent and stabilizing ligands, introducing an organometallic compound into the metal salt solution to form a mixture, heating the mixtur... | 07/03/2001 |
| 6221270 | Process for producing compound for rare earth metal resin-bonded magnet A process for producing a compound for a rare earth metal resin-bonded magnet includes: a slurry preparation step of mixing materials containing a magnetic alloy powder of a rare earth metal alloy, a resin binder, and an organic solvent into a slurry; and... | 04/24/2001 |
| 6171410 | Hard magnetic alloy, hard magnetic alloy compact, and method for producing the same A hard magnetic alloy in accordance with the present invention is composed of at least element T selected from the group consisting of Fe, Co and Ni, at least one rare earth element R, and boron (B). The hard magnetic alloy has an absolute value of the te... | 01/09/2001 |
| 6136456 | Grain oriented electrical steel sheet and method Grain oriented electrical steel sheet with a very low iron loss and a method for producing the same, wherein the surface of the iron substrate of the grain oriented electrical steel sheet is subjected to an enhancement treatment of crystal grain orientati... | 10/24/2000 |
| 6117205 | Soft magnetic metal components manufactured by powder metallurgy and infiltration Corrosion-resistant, soft magnetic metal components manufactured by powder metallurgy and infiltration processes are disclosed. The magnetic components are manufactured by a powder metallurgy process using acicular metal particles to form a skeleton, and ... | 09/12/2000 |
| 6060172 | Fe-based rapidly quenched metal strip The present invention relates to a rapidly quenched metal strip used as a core material for transformers, magnetic shields, choke coils, etc., and to an Fe-based rapidly quenched metal strip having a strip thickness exceeding 20 μm and up to 70 μm, wher... | 05/09/2000 |
| 6027576 | Rare earth element-iron-boron permanent magnet and method for the manufacture thereof In a method for manufacturing a permanent magnet, a powder of a magnetic base alloy and powders of first and second binder alloys are mixed. The magnetic base alloy has a general formula SE2 T14 B, wherein SE is at least one rare ear... | 02/22/2000 |
| 6017490 | Pressed body of amorphous magnetically soft alloy powder and process for producing same A powder of composite particles is prepared by adhering to the surfaces of particles of an amorphous magnetically soft alloy particles of a glass having a softening point lower than the crystallization temperature of the alloy to coat the surfaces of the ... | 01/25/2000 |
| 5888416 | Rare-earth bonded magnet composition, rare-earth bonded magnet and process for producing said rare-earth bonded magnet The addition of a chelating agent or a chelating agent and an antioxidant in combination to a rare-earth bonded magnet composition and a rare-earth bonded magnet comprising a rare-earth magnetic powder and a resin component can provide improved moldabilit... | 03/30/1999 |
| 5882436 | Giant magnetoresistive heterogeneous alloys and method of making same The inventive material exhibits giant magnetoresistance upon application of an external magnetic field at room temperature. The hysteresis is minimal. The inventive material has a magnetic phase formed by eutectic decomposition. The bulk material comprise... | 03/16/1999 |
| 5801630 | Article surveillance magnetic marker having an hysteresis loop with large barkhausen discontinuities at a low field threshold level A harmonic-type EAS marker includes a wire segment formed of cobalt alloy. To form the wire segment, the cobalt alloy is cast as an amorphous wire, die-drawn to a smaller diameter, and then annealed with application of longitudinal tension. The annealed w... | 09/01/1998 |
