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| Number | Title | Issue Date |
| 7740716 | Rare earth sintered magnet The present invention provides a technique to improve an adhesion strength between a magnet main body and a protective film. The rare earth sintered magnet of the present invention comprises a magnet main body of a sintered body containing a rare earth element and a... | 06/22/2010 |
| 7713360 | Rare earth permanent magnet It is an object of the present invention to provide a permanent magnet which is observed as a uniform structure without microstructures, but shows a pinning type initial magnetization curve. There is provided a rare earth permanent magnet comprising a magnetic inter... | 05/11/2010 |
| 7438768 | Rare earth element sintered magnet and method for producing rare earth element sintered magnet Hydrogen embrittlement is prevented in Sm2Co17-based magnets and R2Fe14B-based magnets by metal plating the magnet, then carrying out heat treatment, or by forming a metal oxide or metal nitride layer on the metal plating ... | 10/21/2008 |
| 7338573 | Magnetic substrates with high magnetic loading A method of forming a magnetic assembly having at least one magnetic layer having dimensions of thickness, width and length, and at least one printable substrate layer having dimensions of thickness, width and length, including the steps of providing a molten magnet... | 03/04/2008 |
| 7318318 | Superconducting magnet system with refrigerator A cryostat (1) with a first helium tank (4) which contains helium at an operating temperature T1 | 01/15/2008 |
| 7314530 | Press and magnet manufacturing method A press machine 10 includes a die 12 with a through hole 12a that defines a cavity, a first press surface 14a and a second press surface 16a for pressing a magnetic powder 18 loaded in the cavity, and ma... | 01/01/2008 |
| 7250840 | Layered product A layered product prepared by applying a surface treatment to an adherend having a surface with a low binding property with an anaerobic adhesive, which does not require a complex work, primer application, effected by accelerating an adhesive curing rate, and does n... | 07/31/2007 |
| 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 |
| 7192493 | R-T-B system rare earth permanent magnet and compound for magnet A sintered body with a composition consisting of 25% to 35% by weight of R (wherein R represents one or more rare earth elements, providing that the rare earth elements include Y), 0.5% to 4.5% by weight of B, 0.02% to 0.6% by weight of Al and/or Cu, 0.03% to 0.25% ... | 03/20/2007 |
| 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 |
| 7175718 | Rare earth element permanent magnet material A material for a rare earth permanent magnet having a high magnetic coercive force and a high residual magnetic flux density. 28 to 35% by weight of at least one rare earth element selected from the group consisting of neodymium, praseodymium, dysprosium, terbium, a... | 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 |
| 7144463 | Highly quenchable Fe-based rare earth materials for ferrite replacement The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic Nd—Fe—B type... | 12/05/2006 |
| 7128798 | Magnetic substrates, composition and method for making the same A process of making a magnetic assembly having at least one magnetic layer and at least one printable substrate layer including the steps of providing a magnetic composition comprising about 70 wt-% to about 95 wt-% of at least one magnetic material and about 5 wt-%... | 10/31/2006 |
| 6979409 | Highly quenchable Fe-based rare earth materials for ferrite replacement The present invention relates to highly quenchable Fe-based rare earth magnetic materials that are made by rapid solidification process and exhibit good magnetic properties and thermal stability. More specifically, the invention relates to isotropic Nd—Fe—B type... | 12/27/2005 |
| 6926777 | Method for producing rod-shaped permanent magnets The invention relates to a method for producing rod-shaped permanent magnets according to which pressed parts (2) are produced that are then assembled to a rod-shaped green product. Said green product is subsequently sintered, whereby a rod-shaped single-piec... | 08/09/2005 |
| 6773517 | Rare-earth alloy, rate-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 % of Zr, wi... | 08/10/2004 |
| 6758918 | Isotropic powdery magnet material, process for preparing and resin-boned magnet Disclosed is an isotropic SmFeN powdery magnet material for producing resin-bonded magnets. The magnet powder is prepared by melt-spinning of a molten alloy and nitriding the alloy powder thus obtained to form a magnet alloy having an alloy composition of one of the... | 07/06/2004 |
| 6726781 | High temperature permanent magnets A permanent magnet is provided which retains its magnetic properties and exhibits a linear extrinsic demagnetization curve at elevated temperatures up to 700° C. The magnet is represented by the general formula RE(CoWFeVCuXTY | 04/27/2004 |
| 6623541 | Sintered rare earth magnet and making method A sintered rare earth magnet consisting essentially of 20-30% by weight of R (wherein R is Sm or a mixture of Sm and another rare earth element), 10-45% by weight of Fe, 1-10% by weight of Cu, 0.5-5% by weight of Zr, and the balance of Co has on its surfa... | 09/23/2003 |
| 6592682 | Method for preparing a magnetic material by forging and magnetic material in powder form The invention concerns a method for preparing a magnetic material by forging, characterised in that, in a first embodiment, it comprises the following steps; placing in a sheath an alloy based on at least one rare earth, at least one transition metal and ... | 07/15/2003 |
| 6565673 | Sm(Co, Fe, Cu, Zr, C) compositions and methods of producing same Carbon addition to the rapidly solidified, preferably melt spun, alloy system of Sm(Co, Fe, Cu, Zr) provides for good isotropic magnetic properties. Importantly, these alloys are nanocomposite in nature and comprise the SmCoC2 phase. Thermal pr... | 05/20/2003 |
| 6478891 | Ribbon shaped magnet material magnetic powder and rare earth bonded magnet The ribbon shaped magnet material (quenched ribbon 8) according to the present invention is obtained by ejecting a molten liquid 6 of an alloy containing rare earth elements and transition metals from a nozzle 3, and quenching the molten liquid allowing i... | 11/12/2002 |
| 6475302 | Permanent magnet Disclosed is a permanent magnet which comprises an alloy containing a hard magnetic phase having a ThMn12 type tetragonal structure and a nonmagnetic phase. The alloy is represented by a general formula given below: [R1-a (M1)a ][T1-... | 11/05/2002 |
| 6451132 | High temperature permanent magnets A permanent magnet is provided which retains its magnetic properties and exhibits a linear extrinsic demagnetization curve at elevated temperatures up to 700° C. The magnet is represented by the general formula RE(Cow Fev Cux | 09/17/2002 |
| 6334909 | Cold-accumulating material and cold-accumulating refrigerator using the same A cold accumulating material comprising magnetic substance expressed by the general formula: RCu1-x M1+x (1) wherein R denotes at least one of rare earth element selected from the group consisting of Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb... | 01/01/2002 |
| 6273966 | High performance rare earth-transition metal magnetostrictive materials A high performance rare earth-transition metal magnetostrictive material with increased impurities having the formula (Rx1 Rx2 . . . Rx11)1 (My1 My2 . . . My6)z is provided... | 08/14/2001 |
| 6270591 | Amorphous and nanocrystalline glass-covered wires The invention refers to amorphous and nanocrystalline magnetic glass-covered wires. The wires consist of a metallic amorphous or nanocrystalline core with diameters by the order of 10-6 m, having compositions based on transition metal-metalloid... | 08/07/2001 |
| 6197127 | Cryogenic refrigerant and refrigerator using the same A heat regenerating material for very low temperature use consisting of a magnetic heat regenerating material particle aggregate, wherein, among magnetic heat regenerating material particles constituting the magnetic heat regenerating material particle ag... | 03/06/2001 |
| 6045629 | 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, 1% or less of B, and the ba... | 04/04/2000 |
| 6042657 | Regenerator material for extremely low temperatures and regenerator for extremely low temperatures using the same A cold heat accumulating material for extremely low temperatures which comprises cold heat accumulating granular bodies in which a rate of particles, which are destroyed when a compressive force of 5 MPa is applied thereto by a mechanical strength evaluat... | 03/28/2000 |
| 6017402 | Composite magnetostrictive material, and process for producing the same A composite magnetostrictive material having a magnetostrictive performance required for a practical use and yet a higher strength. A composite magnetostrictive material 1 is comprised of a matrix 2 formed of a magnetostrictive material of an RM-based all... | 01/25/2000 |
| 5985049 | Magnetostrictive composites Composite bodies of magnetostrictive materials of the type RE-Fe2, where RE is one or more of the rare earth elements, preferably samarium or terbium, can be suitably hot pressed with a matrix metal selected from the group consisting of aluminu... | 11/16/1999 |
| 5948179 | 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... | 09/07/1999 |
| 5772796 | Temperature stable permanent magnet A rare earth element containing permanent magnet which retains its magnetic properties at elevated temperatures by a combination of reducing the temperature coefficient of intrinsic coercivity lower than -0.2%/°C., and increasing the intrinsic coercivity... | 06/30/1998 |
| 5674327 | Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet An alloy ingot for permanent magnet consists essentially of rare earth metal and iron and optionally boron. The two-component alloy ingot contains 90 vol % or more of crystals having a crystal grain size along a short axis of 0.1 to 100 μm and that along... | 10/07/1997 |
| 5658396 | Magnetic material Disclosed is a magnetic material which exhibits an improved saturation magnetic flux density and an improved magnetic anisotropy and, thus, is adapted for use as a raw material of a permanent magnet or a bond magnet of a high performance. The magnetic mat... | 08/19/1997 |
| 5466307 | Rare earth magnetic alloy powder and its preparation This invention relates to a rare earth containing multicomponent magnetic alloy powder consisting of no less than six components. During its preparation by reduction and diffusion process, one or more than one dispersing agent is added to the mixture of s... | 11/14/1995 |
| 5456769 | Magnetic material Disclosed is a magnetic material which exhibits an improved saturation magnetic flux density and an improved magnetic anisotropy and, thus, is adapted for use as a raw material of a permanent magnet or a bond magnet of a high performance. The magnetic mat... | 10/10/1995 |
| 5382303 | Permanent magnets and methods for their fabrication Novel permanent magnets of Sm2 Co17 type crystal structure are provided herein. The magnets preferably have samarium, cobalt, iron, copper and zirconium in specified amounts. They have superior magnetic properties, including maximum ... | 01/17/1995 |
