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| Number | Title | Issue Date |
| 7025837 | Permanent magnets and R-TM-B based permanent magnets Permanent magnets in which the ferromagnetic phase is matched with the grain boundary phase, and permanent magnets in which magnetocrystalline anisotropy in the vicinity of the outermost shell of the major phase is equivalent in intensity to that in the inside to su... | 04/11/2006 |
| 7002071 | Thermoelectric conversion material and method of producing the same A thermoelectric conversion material is formed of a polycrystal structure of crystal grains composed of a silicon-rich phase, and an added element-rich phase in which at least one type of added element is deposited at the grain boundary thereof, the result of which ... | 02/21/2006 |
| 6878210 | Surface-treating holder having tubular structure and method using the same A surface treating holder includes a wire which is coiled at distances in such a manner that it is formed as a spring-like tubular structure having spiral-line faces at opposite ends thereof, so that works are accommodated in the tubular structure. A process for sur... | 04/12/2005 |
| 6821357 | Permanent magnets and R-TM-B based permanent magnets Permanent magnets in which the ferromagnetic phase is matched with the grain boundary phase, and permanent magnets in which magnetocrystalline anisotropy in the vicinity of the outermost shell of the major phase is equivalent in intensity to that in the inside to su... | 11/23/2004 |
| 6794973 | Magnetic field generating device for MRI It is an object of the present invention to provide a magnetic field generator for MRI with which it is possible to lower the residual magnetism and eddy current within pole pieces generated by the effect of the pulse current flowing through Gradient magnetic field ... | 09/21/2004 |
| 6777362 | Microwave dielectric ceramic composition A dielectric ceramic composition wherein the dielectric constant ∈ is large, the temperature coefficient τf of the resonance frequency is close to 0, and which as a large Q value, is obtained by adding to and blending with a ceramic composition whose τf of the r... | 08/17/2004 |
| 6776855 | Maraging steel excellent in fatigue characteristics and method for producing the same The present invention provides a maraging steel excellent in fatigue characteristics and a process for the production thereof. A maraging steel of the first embodiment of the present invention has a chemical composition consisting essentially of, in % by weig... | 08/17/2004 |
| 6768407 | Magnetic field generator A permanent-magnet-type magnetic field generator (10) capable of generating a strong magnetic field not weaker than 3 T in a magnetic field generation space (12) is provided. The magnetic field generator (10) has an axially central portion servi... | 07/27/2004 |
| 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 |
| 6761306 | Phosphorus-copper brazing material, brazing sheet, methods of manufacturing the material and the sheet, and flow path structure for heat exchangers A phosphorus-copper brazing material formed of a phosphorus-copper brazing alloy which can easily be cold-worked into a thin sheet, a brazing sheet having a brazing layer of the phosphorus-copper brazing alloy, and a flow path structure for heat exchangers construct... | 07/13/2004 |
| 6755883 | Punch, powder pressing apparatus and powder pressing method A powder pressing apparatus comprises a die having a through hole, an upper punch and a lower punch. At least one of the upper and lower punches has a punching surface having an edge portion provided with a projection. The projection has a tip chamfered by a width n... | 06/29/2004 |
| 6756010 | Method and apparatus for producing compact of rare earth alloy powder and rare earth magnet A method for producing a compact of rare earth alloy powder of the present invention includes: a powder-filling step of filling rare earth allow powder in a cavity formed by inserting a lower punch into a through hall of a die of a powder compacting machine; and a c... | 06/29/2004 |
| 6752879 | Rare earth magnet and method for manufacturing the same A compact is produced from an alloy powder for R—Fe—B type rare earth magnets including particles having a size in a range of about 2.0 μm to about 5.0 μm as measured by a light scattering method using a Fraunhofer forward scattering in a proportion of approxi... | 06/22/2004 |
| 6743394 | Case for use in sintering process to produce rare-earth magnet, and method for producing rare-earth magnet A case according to the present invention is used in a sintering process to produce a rare-earth magnet. The case includes: a body with an opening; a door for opening or closing the opening of the body; and supporting rods for horizontally sliding a sintering plate,... | 06/01/2004 |
| 6743082 | Blasting apparatus With the blasting apparatus in which the injection nozzle is disposed to inject the blast material against the work pieces from the outside of the tubular barrel formed of the mesh net for accommodation of the work pieces and rotatable about the center axis, the wor... | 06/01/2004 |
| 6736343 | Milling apparatus and milling method A milling apparatus comprises a mill for milling of an object material such as a rare-earth alloy. The mill includes a mill main body. A classifying rotor for classification of a powder is provided inside and at an upper portion of the mill main body. The mill main ... | 05/18/2004 |
| 6734126 | Dielectric ceramic composition for microwave use A dielectric ceramic composition for microwave use having a relative permittivity εr of 35 to 45, Qf0 value of more than 50,000 GHz (at 7 GHz), and dielectric characteristic of τf=0±10 ppm/° C includes an La2O3.Al2O | 05/11/2004 |
| 6715198 | Method of manufacturing a magnetic sensor A magnetic sensor of orthogonal flux-gate type is provided with a cylindrical core made of a soft magnetic material; an internal conductor that is placed inside the core; a detection coil wound up on the core; and an external conductor that is placed around the core... | 04/06/2004 |
| 6706124 | Permanent magnet including multiple ferromagnetic phases and method of producing the magnet An iron-based rare earth alloy magnet has a composition represented by the general formula: (Fe1-mTm)100-x-y-zQxRyMz, where T is at least one element selected from the group consisting of Co and Ni; Q... | 03/16/2004 |
| 6696015 | Method for producing rare-earth magnet The method for producing a rare-earth sintered magnet of the present invention includes the steps of: compacting alloy powder for the rare-earth sintered magnet to form a green compact; loading the green compact into a case having a structure restricting ... | 02/24/2004 |
| 6676773 | 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 that has a chilled structure that constitutes about 2 volume ... | 01/13/2004 |
| 6677229 | Solder bump transfer sheet, method for producing the same, and methods for fabricating semiconductor device and printed board The method for producing a solder bump transfer sheet of the invention includes the steps of: providing a sheet having a chromium oxide layer containing substantially no iron oxide as the outermost surface; and forming a plurality of solder bumps placed i... | 01/13/2004 |
| 6656416 | Powder feeding apparatus, pressing apparatus using the same, powder feeding method and sintered magnet manufacturing method A powder pressing apparatus comprises a powder feeding apparatus. The powder feeding apparatus includes a container having a bottom portion provided with a powder holding portion formed with openings, and an impactor. The impactor is hit against the conta... | 12/02/2003 |
| 6656417 | Punch, powder pressing apparatus and powder pressing method A powder pressing apparatus comprises a die having a through hole, an upper punch and a lower punch. At least one of the upper and lower punches has a punching surface having an edge portion provided with a projection. The projection has a tip chamfered b... | 12/02/2003 |
| 6653548 | Thermoelectric conversion material, method for manufacturing same, and thermoelectric conversion element A cuboid p-type and an n-type thermoelectric conversion material having a composite of an alloy powder for a rare earth magnet and a bismuth-based thermoelectric conversion material that has been rendered a p-type semiconductor or an n-type semiconductor ... | 11/25/2003 |
| 6648984 | Rare earth magnet and method for manufacturing the same A compact is produced from an alloy powder for R--Fe--B type rare earth magnets including particles having a size in a range of about 2.0 μm to about 5.0 μm as measured by a light scattering method using a Fraunhofer forward scattering in a proportion o... | 11/18/2003 |
| 6649124 | Powder pressing apparatus and powder pressing method A powder pressing apparatus comprises a die formed with a plurality of cavities. None of the cavities overlap with another in the direction of pushing the compacts. The magnetic field generator includes a pair of yokes sandwiching the die. The yokes and t... | 11/18/2003 |
| 6650214 | Magnetic field generator for MRI, method for assembling the same, and method for assembling a magnet unit for the same A plate yoke has an upper surface formed with a projection and a guiding rail. A new magnet block is transported by sliding on the upper surface of the plate yoke, and is bonded side by side with the projection or a magnet block which is already fixed. Du... | 11/18/2003 |
| 6642826 | Magnetic field generator and assembling method thereof A magnetic field generator comprises a pair of plate yokes opposed to each other with a space in between. Each plate yoke has a main surface on which a permanent magnet is disposed. A shielding magnet is provided each at a forward portion on an open side ... | 11/04/2003 |
| 6634089 | Method for dismantling a magnetic field generator A method for dismantling a magnetic field generator, which includes the steps of providing a plate yoke, and a permanent magnet provided on the plate yoke and having a plurality of neodymium magnets bonded together by an adhesive for the magnetic field ge... | 10/21/2003 |
| 6617044 | Surface treating process, surface treating apparatus, vapor-depositing material, and rare earth metal-based permanent magnet with surface treated A surface treating process according to the present invention, a vapor deposited film is formed from an easily oxidizable vapor-depositing material on the surface of a work by evaporating the vapor-depositing material in a state in which the vapor deposit... | 09/09/2003 |
| 6605371 | Brazing alloy for stainless steel, structure braze-assembled with the brazing alloy, and brazing material for stainless steel A brazing alloy according to the present invention has a melting point equivalent to that of a copper brazing filler and is excellent in corrosion- and oxidation-resistance. The brazing alloy consists essentially of Mn, Ni and Cu, and has a composition in... | 08/12/2003 |
| 6595094 | Working cutting apparatus and method for cutting work A work cutting apparatus comprises a bed. The bed has an upper surface provided with a column including a rail slidably mounted with a slider. The slider has a front surface mounted with a supporting portion supporting two end portions of a rotating shaft... | 07/22/2003 |
| 6537488 | Process for handling powder green compacts and rare earth metal-based magnet In a process for handling green compacts made from a rare earth metal-based magnetic alloy powder by a press machine to slide, on a sintering support plate, the green compacts, the support plate used has a surface roughness degree Ra in a range of 0.6 to ... | 03/25/2003 |
| 6525260 | Thermoelectric conversion material, and method for manufacturing same A silicon-based polycrystal powder, which contains no more than 30 at % Ge, C, Sn, or another such element that does not generate carriers as well as an added element that does generate carriers, and which has a crystal structure including crystal grains ... | 02/25/2003 |
| 6511552 | Permanent magnets and R-TM-B based permanent magnets Permanent magnets in which the ferromagnetic phase is matched with the grain boundary phase, and permanent magnets in which magnetocrystalline anisotropy in the vicinity of the outermost shell of the major phase is equivalent in intensity to that in the i... | 01/28/2003 |
| 6506321 | Silicon based conductive material and process for production thereof A silicon based conductive material based on a semiconductor silicon and having an electric resistivity of 10-3 (Ω.multidot.m) or less at ambient temperature which has been unattainable heretofore, while facilitating production and handling. A... | 01/14/2003 |
| 6481993 | Process and apparatus for supplying rare earth metal-based alloy powder In a rare earth metal-based alloy powder supplying apparatus, a rare earth metal-based alloy powder is supplied from a feeder box having an opening in its bottom surface into a cavity by moving the feeder box to above the cavity. The apparatus includes a ... | 11/19/2002 |
| 6482349 | Powder pressing apparatus and powder pressing method A powder pressing apparatus comprises an upper punch and a lower punch for compression of a powder in a cavity formed in a through hole of a die. A gap between a side surface of the lower punch and a side surface of the through hole of the die is sealed b... | 11/19/2002 |
| 6474576 | Milling apparatus and milling method A milling apparatus comprises a mill for milling of an object material such as a rare-earth alloy. The mill includes a mill main body. A classifying rotor for classification of a powder is provided inside and at an upper portion of the mill main body. The... | 11/05/2002 |
