Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 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 force and its consistency by increasing the cooling rate after temperi... | 05/27/2008 |
| 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 producing such an alloy, and sintered or bonded magnets having excellent cor... | 03/04/2008 |
| 7314531 | R-T-B system rare earth permanent magnet A sintered body comprising a main phase consisting of an R2T14B phase (wherein R represents one or more rare earth elements (providing that the rare earth elements include Y), and T represents one or more transition metal elements essentially c... | 01/01/2008 |
| 7311788 | R-T-B system rare earth permanent 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, provided 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% b... | 12/25/2007 |
| 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 |
| 7267794 | Ductile medium-and high-density, non-toxic shot and other articles and method for producing the same Density-enhanced compositions that are comprised of at least iron and tungsten, and articles, including firearm projectiles, formed therefrom. The articles have a density that exceeds that of steel, and which may be less than, equal to, or greater than that of lead.... | 09/11/2007 |
| 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 |
| 7211430 | System for stirring growth medium An improved system and method for stirring suspended solids in a liquid media to enhance sample growth and improve sample detection results. The system and method employs a sample vessel holder which adapted to receive at least one sample vessel which contains the s... | 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 |
| 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 formula (I): R2O3 (I) | 12/12/2006 |
| 7140728 | Method of forming magnetic eyeglass appliance An eyeglass accessory frame includes an auxiliary frame. The auxiliary frame includes a heat-treated magnetic alloy. The heat-treated magnetic alloy of the auxiliary frame is configured to magnetically couple the auxiliary frame to a primary frame having magnetizabl... | 11/28/2006 |
| 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 |
| 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 |
| 7018487 | Magnet containing low rare earth element and method for manufacturing the same An exchange-spring magnet is prepared using a magnet alloy containing Ta and C in addition to Nd, Fe and B. This exchange-spring magnet uses the magnet alloy prepared by a liquid quenching method or a mechanical alloying method. Further, by subjecting the magnetic a... | 03/28/2006 |
| 7018485 | Apparatus for subjecting rare earth alloy to hydrogenation process and method for producing rare earth sintered magnet using the apparatus An apparatus for subjecting a rare earth alloy block to a hydrogenation process includes a casing, gas inlet and outlet ports, a member arranged to produce a gaseous flow, and a windbreak plate. The casing defines an inner space for receiving a container. The contai... | 03/28/2006 |
| 7004228 | 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 Fe100-x-y-zRxQyMz (where R is at least one element selected... | 02/28/2006 |
| 6994756 | Method of producing sintered rare earth magnetic alloy wafer 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... | 02/07/2006 |
| 6991686 | Method for producing magnetostrictive material To provide a method for producing a magnetostrictive material of excellent magnetostrictive characteristics. The method for producing a magnetostrictive material, wherein a mixture composed of Starting Materials A, B and C is sintered, where A is represented ... | 01/31/2006 |
| 6984271 | Rare earth magnet, process for producing same, and motor using rare earth magnet A rare earth magnet to be used in a motor. The rare earth magnet comprises rare earth magnet particles. Additionally, a rare earth oxide is present among the rare earth magnet particles, the rare earth oxide being represented by the following general formula (I): | 01/10/2006 |
| 6982010 | High performance rare earth-iron giant magnetostrictive materials and method for its preparation The present invention relates to a high performance rare earth-iron giant magnetostrictive material of the formula (Tbx1Dyx2Smx3Hox4Rx5)(Sy1Py2Fe1-y1-y2-y3Ty3)Q | 01/03/2006 |
| 6890392 | Nanocomposite magnet and method for producing same A method of making a material alloy for an iron-based rare earth magnet includes the step of forming a melt of an alloy with a composition of (Fe1-mTm)100-x-y-z-n(B1-pCp)xRyTi2M | 05/10/2005 |
| 6800145 | Rare earth magnet alloy, manufacturing method thereof and product applied with rare earth magnet alloy A Nd—Fe—B type rare earth magnet alloy is provided with hard magnetic phases each of which has a size equal to or less than 80 nm, soft magnetic phases each of which has a size equal to or less than 80 nm, with the hard and soft magnetic phases being present in ... | 10/05/2004 |
| 6780255 | Sm-fe-N based alloy powder and process for producing the same A magnetic powder of an Sm—Fe—N alloy, which has a mean particle diameter of 0.5 to 10 μm, and either an average acicularity of 75% or above or an average sphericity of 78% or above. The powder exhibits an extremely high residual magnetization and an extremely ... | 08/24/2004 |
| 6777097 | Corrosion resistant rare earth magnet and its preparation On a surface of a rare earth permanent magnet R—T—M—B wherein R is a rare earth element, T is Fe or Fe and Co, M is Ti, Nb, Al, V, Mn, Sn, Ca, Mg, Pb, Sb, Zn, Si, Zr, Cr, Ni, Cu, Ga, Mo, W or Ta, 5 wt %≦R≦40 wt %, 50 wt %≦90 wt %, 0 wt %≦M≦8 wt %, an... | 08/17/2004 |
| 6764607 | Corrosion-resistant R-Fe-B bonded magnet powder for forming R-Fe-B bonded magnet and method for preparation thereof A powder for forming a R—Fe—B bonded magnet, wherein an R compound, such as an R oxide, an R carbide, an R nitride or an R hydride, which is contained in a raw material powder such as a super rapidly cooled powder or a hydrogen treated powder (HDDR powder) and r... | 07/20/2004 |
| 6746545 | Preparation of rare earth permanent magnets An R—Fe—B permanent magnet wherein R is Nd or a combination of Nd with a rare earth element is prepared by casting an R—Fe—B alloy, crushing the alloy in an oxygen-free atmosphere of argon, nitrogen or vacuum, effecting comminution, compaction, sintering, ag... | 06/08/2004 |
| 6695929 | Method of making material alloy for iron-based rare earth magnet A melt of an iron-based rare earth material alloy, represented by (Fe1-m Tm)100-x-y-z Qx Ry Mz, is prepared, wherein T is Co and/or Ni; Q is B and/or C; R is selected from Y (yttrium) and t... | 02/24/2004 |
| 6471786 | Method for preparing nanocomposite magnet powder and method for producing nanocomposite magnet The inventive method for preparing nanocomposite magnet powder includes the step of preparing material alloy powder for a nanocomposite magnet represented by a general formula Fe100-x-y-z-u Rx By Coz Mu | 10/29/2002 |
| 6102980 | Dust core, ferromagnetic powder composition therefor, and method of making A ferromagnetic powder composition for dust cores contains a ferromagnetic metal powder and 0.1-15% by volume based on the powder of titania sol and/or zirconia sol. The composition is pressure molded and desirably annealed into a dust core which exhibits... | 08/15/2000 |
| 5942053 | Composition for permanent magnet The object of the invention is to provide a composition for permanent magnet with excellent magnetic properties exhibiting well the latent ability of the RFeB system tetragonal compounds. The composition for permanent magnet according to the present inven... | 08/24/1999 |
| 5905424 | Bonded magnet made from gas atomized powders of rare earth alloy Bonded magnets made from gas atomized powders of an rare earth alloy and having good hard magnetic characteristics are provided. The powders have an alloy composition comprising approximately 15 to 34 weight % of RE, 0.8 to 1.2 weight % of B, 0.5 to 4 wei... | 05/18/1999 |
| 5755986 | Soft-magnetic dielectric high-frequency composite material and method for making the same A high-frequency composite material, having soft magnetic and dielectric characteristics, comprising a soft magnetic alloy powder represented by the general composition Aa Mb Dc and a synthetic resin, wherein A represents ... | 05/26/1998 |
| 5560784 | Rare earth cast alloy permanent magnets and methods of preparation A rare earth iron permanent magnet including at least one rare earth element, iron and boron as primary ingredients. The magnet can have an average grain diameter of less than or equal to about 150 μm and a carbon content of less than or equal to about 4... | 10/01/1996 |
| 5520748 | Process for manufacturing Alnico system permanent magnet A process for manufacturing an Alnico system permanent magnet is disclosed in which the alloy powder of the Alnico system having the proper composition is manufactured through a rapid solidification process, so that the crushability and the formability sh... | 05/28/1996 |
| 5486239 | Method of manufacturing magnetically anisotropic R-T-B-M powder material and method of manufacturing anisotropic magnets using said powder material A magnetically anisotropic R-T-B-M powder material which is starting with an R-T-B-M raw alloy material having a c-axis crystal orientation of an R2 T14 B-type intermetallic compound phase. In one embodiment, the starting material is... | 01/23/1996 |
| 5486240 | Carbide/nitride grain refined rare earth-iron-boron permanent magnet and method of making A method of making a permanent magnet wherein 1) a melt is formed having a base alloy composition comprising RE, Fe and/or Co, and B (where RE is one or more rare earth elements) and 2) TR (where TR is a transition metal selected from at least one of Ti, ... | 01/23/1996 |
| 5482572 | Method for the preparation of alloys of the rare earth metals of the SE.sub. Fe17-x TMx Ny type A method for the preparation of alloys of the SE2 Fe17-x TMxN.sub.y type where SE stands for a rare earth metal, including Y or a mixture of these metals, while TM stands for Co, Ni, Cu, Zr, Ga, Hf, Ta, Nb, Ti, Si, A1, V, ... | 01/09/1996 |
| 5478411 | Magnetic materials and processes for their production A process is provided for modifying the magnetic properties of an intermetallic compound comprising at least iron, or a combination of iron with at least one transition metal, and at least one rare earth element. The process comprises heating the intermet... | 12/26/1995 |
| 5433795 | Fabrication of permanent magnets without loss in magnetic properties A method is provided for forming high coercivity permanent magnets from a rare earth-iron-boron metal, wherein the permanent magnets exhibit high intrinsic coercivity comparable to that of the rare earth-iron-boron metal alloy when formed by machining and... | 07/18/1995 |
| 5345310 | Identifying and compensating for slip-plane dislocations in photolithographic mask alignment Techniques for identifying and determining the orientation, magnitude, and direction of slip plane dislocations transecting semiconductor dies are described, whereby a four point alignment pattern is examined for "squareness" and size integrity. Lack of s... | 09/06/1994 |
