Patents in Class 148/101

Matches 1 - 50 out of 393

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Match	Document	Document Title
1	7632360	Rare earth magnet powder and method of producing the same A rare earth magnet powder has a chemical composition which includes R: 5 to 20% (wherein, R represents one or two or more rare earth elements being inclusive of Y but exclusive of Dy and Tb), one...
2	7608153	Rare earth magnet and method therefor A rare earth magnet includes rare earth magnet particles; and amorphous and/or crystalline terbium oxide present at the boundary of the rare earth magnet particles and represented by the formula:...
3	7594972	Alloy lump for R-T-B type sintered magnet, producing method thereof, and magnet The present invention is an alloy lump for R-T-B type sintered magnets, including an R 2 T 14 B columnar crystal and an R-rich phase (in which R is at least one rare earth element including Y, T is...
4	7585378	Methods for producing raw material alloy for rare earth magnet, powder and sintered magnet A method of making a material alloy for an R-T-Q based rare-earth magnet according to the present invention includes the steps of: preparing a melt of an R-T-Q based rare-earth alloy, where R is...
5	7578892	Magnetic alloy material and method of making the magnetic alloy material A magnetic alloy material according to the present invention has a composition represented by Fe 100-a-b-c RE a A b Co c , where RE is a rare-earth element always including La, A is either Si or...
6	7563330	Magnetic material and manufacturing method thereof A powder raw material is prepared by mixing at least two kinds of powders selected from a powder A, a powder B, a powder C, and a powder D. A sintered body of a magnetic material having an NaZn 13 ...
7	7551051	Ring magnet and method of manufacturing the magnet Radially oriented ring-shaped preliminarily molded pieces of a ring magnet are stacked in an axial direction to form a ring-shaped molded body, in which end faces of the ring-shaped preliminarily...
8	7550047	Rare earth element-iron-boron alloy and magnetically anisotropic permanent magnet powder and method for production thereof A method of making a magnetically anisotropic magnet powder according to the present invention includes the steps of preparing a master alloy by cooling a rare-earth-iron-boron based molten alloy...
9	7547365	Process for producing, through strip casting, raw alloy for nanocomposite type permanent magnet To make a raw alloy, consisting mostly of amorphous structure, highly productively and at a reduced cost for a nanocomposite magnet, a molten alloy represented by Fe 100-x-y-z R x Q y M z (where R...
10	7497892	Magnetic particles, method for producing the same, and magnetic recording medium Magnetic particles of the present invention comprising monocrystals of rare earth element-transition metal-metalloid having particle diameters of 5 nm to 50 nm. The magnetic particles are produced...
11	7481895	Isotropic powdery magnet material, process for preparing and resin-bonded 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...
12	7470334	Method for preparing sintered product, sintered product and magnetostriction material A method for manufacturing a sintered compact includes the steps of preparing an alloy powder having a composition represented by Expression 1: RT W (where, R is at least one kind of rare earth...
13	7438768	Rare earth element sintered magnet and method for producing rare earth element sintered magnet Hydrogen embrittlement is prevented in Sm 2 Co 17 -based magnets and R 2 Fe 14 B-based magnets by metal plating the magnet, then carrying out heat treatment, or by forming a metal oxide or metal...
14	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...
15	7396419	*WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST* Method for preparing sintered product, sintered product and magnetostriction material A method for manufacturing a sintered compact includes the steps of preparing an alloy powder having a composition represented by Expression 1: RT W (where, R is at least one kind of rare earth...
16	7390369	Method for producing rare earth based alloy powder and method for producing rare earth based sintered magnet An inventive method of making a rare-earth alloy powder is used to produce a rare-earth sintered magnet, whose main phase has a composition R 2 T 14 A (where R is one of the rare-earth elements...
17	7377985	Temper process of sintered Nd-Fe-B permanent magnet The present invention provides a tempering process for sintered Nd—Fe—B permanent magnet material, which optimizes the microstructure of the Nd—Fe—B magnet and improves intrinsic coercive...
18	7371292	Nd-Fe-B type anisotropic exchange spring magnet and method of producing the same A Nd—Fe—B type anisotropic exchange spring magnet is produced by a method of obtaining powder of a Nd—Fe—B type rare earth magnet alloy which comprises hard magnetic phases and soft...
19	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...
20	7364628	Solid material for magnet A solid material for a magnet, comprising a rare-earth/iron/nitrogen/hydrogen system magnetic material.
21	7344606	Permanent magnet manufacturing method and press apparatus An anisotropic bonded magnet is produced at a low cost by avoiding various problems caused by remanence. Also, the unit weight and density of a compact is increased by filling even a cavity, having...
22	7344605	Exchange spring magnet powder and a method of producing the same An anisotropic exchange spring magnet powder complexing a hard magnetic material and a soft magnetic material, wherein a rare earth metal element, a transition metal element, boron and carbon and...
23	7338566	Alloy for sm-co based magnet, method for production thereof, sintered magnet and bonded magnet The present invention relates to a Sm—Co based magnet alloy useful as a raw material for producing magnets having high magnetic properties, such as sintered or bonded magnets, methods for...
24	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...
25	7316752	R-T-B-C based rare-earth magnetic powder and bonded magnet The step of preparing a rapidly solidified alloy by rapidly quenching a melt of an R-T-B-C based rare-earth alloy (where R is at least one of the rare-earth elements including Y, T is a transition...
26	7314530	Press and magnet manufacturing method A press machine 10 includes a die 12 with a through hole 12 a that defines a cavity, a first press surface 14 a and a second press surface 16 a for pressing a magnetic powder 18 loaded...
27	7297213	Permanent magnet including multiple ferromagnetic phases and method for producing the magnet An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe 1-m T m ) 100-x-y-z Q x R y M z , where T is at least one element selected from the group consisting...
28	7279053	Alloy thin ribbon for rare earth magnet, production method of the same, and alloy for rare earth magnet The present invention provides a rare earth magnet superior in magnetic properties and thermal stability. In an aspect of the present invention, a production method of an alloy thin ribbon for a...
29	7258751	Rare earth magnet and method for production thereof In a rare earth magnet, an added heavy rare earth element R H such as Dy is effectively used without any waste, so as to effectively improve the coercive force. First, a molten alloy of a material...
30	7255752	Method for manufacturing R-T-B system rare earth permanent magnet A method for manufacturing an R-T-B system rare earth permanent magnet that is a sintered body comprising a main phase consisting of an R 2 T 14 B phase (wherein R represents one or more rare earth...
31	7255751	Method for manufacturing R-T-B system rare earth permanent magnet When an R-T-B system rare earth permanent magnet is obtained by a mixing method to obtain a sintered body with a composition consisting essentially of 25% to 35% by weight of R (wherein R...
32	7244318	Method for preparation of permanent magnet A blended powder including a first powder containing an R 2 T 14 B phase as a main phase, and a second powder containing an R 2 T 17 phase at 25 wt % or more of the whole is prepared. Herein, R is...
33	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...
34	7208056	Rare earth sintered magnet, and method for improving mechanical strength and corrosion resistance thereof An R-T-B system rare earth sintered magnet having a high mechanical strength and excellent corrosion resistance is provided. The R-T-B system rare earth sintered magnet of the present invention...
35	7207102	Method for forming permanent magnets with different polarities for use in microelectromechanical devices Methods are provided for forming a plurality of permanent magnets with two different north-south magnetic pole alignments for use in microelectromechanical (MEM) devices. These methods are based on...
36	7204891	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...
37	7201809	Radial anisotropic ring magnet and method of manufacturing the ring magnet A radially anisotropic ring magnet endowed with good magnetic characteristics and having throughout the magnet an angle of 80 to 100° between a center axis thereof and a radial anisotropy...
38	7195661	Magnetic material Magnetic materials having a coercivity not less than about 1000 Oersted are prepared in a single step procedure. A molten mixture of a desired composition having a relatively high boron content is...
39	7186303	Magnetic alloy material and method of making the magnetic alloy material A method of making a magnetic alloy material includes the steps of: preparing a melt of an alloy material having a predetermined composition; rapidly cooling and solidifying the melt to obtain a...
40	7172659	Method for producing quenched R-T-B—C alloy magnet The present invention is a production method of an R-T-B—C rare earth alloy (R is at least one element selected from the group consisting of rare earth elements and yttrium, T is a transition...
41	7166171	Longitudinal magnetic field compacting method and device for manufacturing rare earth magnets Disclosed is a longitudinal magnetic field compacting method and device for manufacturing a neodymium (Nd) based rare earth magnet in the shape of a butterfly for use in VCM of HDD or DVD, a disk...
42	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,...
43	7160398	Method of making rapidly solidified alloy for magnet A melt of an alloy, represented (Fe 1-m T m ) 100-x-y-z Q x R y M z , where T is Co and/or Ni, Q is B and/or C, R is at least one rare-earth element, M is selected from Al, Si, Ti, V, Cr, Mn, Cu,...
44	7147686	Rare earth magnet, method for manufacturing the same, and motor using rare earth magnet A rare earth magnet comprises rare earth magnet particles and a rare earth oxide being present between the rare earth magnet particles. The rare earth oxide is represented by a following general...
45	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....
46	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...
47	7138018	Process for producing anisotropic magnet powder A method for manufacturing an anisotropic magnet powder includes a high-temperature hydrogenation process of holding an RFeB-based alloy containing rare earth elements (R), B and Fe as main...
48	7138017	Rare earth magnet and method for producing the magnet A method of making an alloy powder for an R—Fe—B-type rare earth magnet includes the steps of preparing a material alloy that is to be used for forming the R—Fe—B-type rare earth magnet and...
49	7114340	Method of making active magnetic refrigerant materials based on Gd-Si-Ge alloys An alloy made of heat treated material represented by Gd 5 (Si x Ge 1−x ) 4 where 0.47≦x≦0.56 that exhibits a magnetic entropy change (−ΔS m ) of at least 16 J/kg K, a magnetostriction of...
50	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...

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