Assignee: Daido Tokushuko Kabushiki Kaisha

Location: Nagoya, JP
No. of patents: 109

Number	Title	Issue Date
8002906	Rare earth magnet and production process thereof The present invention provides a rare earth magnet, which is formed through at least hot molding, the rare earth magnet containing grains including an R2X14B phase as a main phase, and a grain boundary phase surrounding peripheries of the grain...	08/23/2011
6752883	Free-cutting Ni-base heat-resistant alloy A free-cutting Ni-base heat-resistant alloy excellent in the high-temperature strength and corrosion resistance was proposed. The alloy contains Ni as a major component, 0.01 to 0.3 wt % of C and 14 to 35 wt % of Cr, and further contains at least one element selecte...	06/22/2004
7381369	Free cutting alloy Provided is free cutting alloy excellent in machinability, preserving various characteristics as alloy. The free cutting alloy contains: one or more of Ti and Zr as a metal element component; and C being an indispensable element as a bonding component with the metal...	06/03/2008
7338630	Free-cutting steel and fuel injection system component using the same The present invention is to provide a free-cutting steel capable of suppressing production of coarse inclusions, and having a high fatigue strength and a desirable machinability. The free-cutting steel aimed at solving the foregoing problems consists essentially of,...	03/04/2008
7325434	Method for manufacturing ring-shaped magnet material and manufacturing apparatus used therefor A method for manufacturing a ring-shaped magnet includes arranging, in a penetrating hole formed in a die, a mandrel having a cylinder tip portion of a diameter d1, a cylinder base end portion of a diameter d2, provided d1	02/05/2008
7297214	Free cutting alloy Provided is free cutting alloy excellent in machinability, preserving various characteristics as alloy. The free cutting alloy contains: one or more of Ti and Zr as a metal element component; and C being an indispensable element as a bonding component with the metal...	11/20/2007
7160400	Low thermal expansion Ni-base superalloy A low thermal expansion Ni-base superalloy contains, by weight % (hereinafter the same as long as not particularly defined) C: 0.15% or less; Si: 1% or less; Mn: 1% or less; Cr: 5 to 20%; at least one of Mo, W and Re of Mo+½(W+Re) of 17 (exclusive) to 25%; Al: 0.2 ...	01/09/2007
7113123	Electromagnetic wave absorber and a process of producing same An electromagnetic wave absorber having an excellent electromagnetic wave absorption characteristic in 5 to 6 GHz band. The electromagnetic wave absorber has a matrix and powder filled in the matrix. The particles of the powder have electrical conductivity at least ...	09/26/2006
7026576	Welding wire and welding method using the wire A welding wire contains 0.025 mass % or less C, 1.3 mass % or less Si, 2.0 mass % or less Mn, 10 to 25 mass % Cr, 0.04 to 0.2 mass % N, Al and Ti in amounts (mass %) satisfying the relationship: e−800(x−0.05)2×e−300(y�...	04/11/2006
7000679	Casting, vertical casting method and vertical casting apparatus A molten steel of a special steel or the like including a high-alloy steel is poured in a mold whose bottom portion is closed with a dummy head of a lift table. As the lift table is vertically moved down at a given casting speed, a casting whose lower end is support...	02/21/2006
6972503	Brushless motor A brushless motor A includes a permanent magnet used as a rotor 1 that is driven by three-phase power supply, wherein the permanent magnet is magnetized by a trapezoidal magnetization, and the trapezoidal magnetization is applied such that a generation period...	12/06/2005
6943318	Welding tip for arc welding and arc welding apparatus A contact provided in a welding tip of an arc welding apparatus includes a tip body adapted to be mounted to a welding torch body and a tip end member formed integrally therewith. The tip end member is divided into two parts, i.e., first and second halves by means o...	09/13/2005
6918972	Ni-base alloy, heat-resistant spring made of the alloy, and process for producing the spring A Ni-base alloy which has excellent resistance to permanent set at high temperature and which can be produced at low cost, a heat-resistant spring made of the Ni-base alloy, and a process for producing the spring. The Ni-base alloy of the present invention consists ...	07/19/2005
6852174	Powder magnetic core There is disclosed a powder magnetic core in which a permeability does not easily drop even when an applied magnetic field intensifies, comprising: a bulk body containing a main component of a powder of an Fe-base alloy having a soft magnetic property, and the balan...	02/08/2005
6673165	High-hardness martensitic stainless steel excellent in corrosion resistance A high-hardness martensitic stainless steel excellent in corrosion resistance, comprising less than 0.15% by weight of C, from 0.10 to 1.0% by weight of Si, from 0.10 to 2.0% by weight of Mn, 0.010% or less of S, from 12.0 to 18.5% by weight of Cr, from 0...	01/06/2004
6605162	Anisotropic magnet and process of producing the same This invention relates to an anisotropic magnet having excellent magnetic characteristics such as a high magnetic flux density, a process for producing the same, and a motor having the same....	08/12/2003
6546038	Semiconductor surface-emitting element A semiconductor surface-emitting element having a light-emitting portion and formed of a plurality of semiconductor layers including a plurality of light-generating layers of a quantum well structure for generating lights having respective different emiss...	04/08/2003
6496332	Head slider for flexible magnetic disk A head slider for a flexible magnetic disk has a magnetic pole pad including a magnetic head buried in the pad and being disposed on a surface of the head slider opposed to the flexible magnetic disk, and the magnetic head performs the recording of a sign...	12/17/2002
6464935	Steel for shaft A steel for shaft, which has corrosion resistance, machinability, and straightness at substantially the same levels as those of free cutting steel 12L14 plated with Ni, which has conventionally been used as a steel for shaft, and need not be plated on its...	10/15/2002
6432159	Magnetic mixture A magnetic mixture comprising at least two kinds of powders which are uniformly mixed with each other. Each powder exhibits a significant magnetic property when its constituent elements have a predetermined composition ratio. Magnetic properties of each p...	08/13/2002
6419760	Powder magnetic core A powder magnetic core is made from powder containing Fe-based soft magnetic powder as a major component. Provided that an initial permeability of the core is μ0 and that a permeability of the core observed when a magnetic field of 24 kA/m is ...	07/16/2002
6403983	Quantum well type light-emitting diode A quantum well type light-emitting diode having a light-emitting portion and formed of a plurality of semiconductor layers including at least one light-generating layer of a quantum well structure for generating a light, and a pair of reflecting layers be...	06/11/2002
6348081	Granulated powder for high-density sintered body, method for producing high-density sintered body using the same, and high-density sintered body A granulated powder for a high-density sintered body is provided, which has an excellent flow rate and an excellent sintered density, and a sintered body produced using the same is provided. The granulated powder is obtained by granulation using a binder ...	02/19/2002
6338574	Bearing mechanism, hard disk drive mechanism and polygon mirror drive mechanism using the bearing mechanism, and method for manufacturing herringbone groove portions of dynamic-pressure bearing A bearing mechanism eliminates the need for lubricating oil, is capable of generating enough radial dynamic pressure even in lower-speed regions, and yet can be easily surface-machined for the generation of radial dynamic pressure and manufactured with lo...	01/15/2002
6302314	Method for examining bonded-metal by ultrasonic examination A method for examining bonded-metal by ultrasonic examination, the method comprising a step of measuring an attenuation amount of an ultrasonic wave, the ultrasonic wave being generated by a sending probe and received by a receiving probe through a bondin...	10/16/2001
6225556	Magnetic shield sheet and method for manufacturing thereof, and cable using the sheet A sheet for shielding a room, conductive cables, magnetic recording media, inside shield rooms and other objects, from the effects of a magnetic field. The sheet is used as a magnetic shield by wrapping it around the objects or areas which need shielding ...	05/01/2001
6183657	Core material for noise filter In a core material for the noise filter, powders of a flat and soft magnetic material is dispersed and buried into an insulating material such as rubber or plastic....	02/06/2001
6162551	Alloy used for joining to cemented carbide, and its composite material A joining alloy of the invention is based on Co, Ni, or their alloy, and contains 1.0 to 2.3% by mass of C and 15.5 to 34.7% by mass of W. Using HIP, the joining alloy in the form of a casting or powders is integrated with a WC--Co or WC--Ni type cemented...	12/19/2000
6156134	Bonding method of dual phase stainless steel In a method of bonding ferric and austenitic dual stainless steels, an insert material made of a Ni base alloy having a melting point below 1290° C. is put between the bonding cross section faces of mother material steels comprising a dual phase stainles...	12/05/2000
6136429	Electromagnetic shielding and wave absorption sheet and the production of the same An object of the present invention is to provide a shielding sheet which has a high and stable shieldability to electromagnetic waves, has a sufficient pliability, and can be easily wound around a cable and the like. The shielding sheets 1, 1', and 1" eac...	10/24/2000
6083329	Gas shielding apparatus and gas shielding method A gas shielding apparatus comprising a main gas jacket having induction heating means, and front gas jacket and rear gas jacket integrally disposed at supply side and discharge side of a member to be bonded or a member to be heated of the main gas jacket,...	07/04/2000
6039919	High corrosion resisting alloy for diesel engine valve A high corrosion resisting alloy for use in inlet and exhaust valves of diesel engines which is low in cost and excellent in corrosion resistance and strength, which consists by weight percentage of Cࣘ0.1%, Siࣘ1.0%, Mnࣘ1.0%, 25%	03/21/2000
6040587	Spin-polarized electron emitter having semiconductor opto-electronic layer with split valence band An electron emitting element including a semiconductor opto-electronic layer having a split valence band and capable of emitting a beam of spin-polarized electrons from an emitting surface thereof upon incidence of an excitation laser radiation upon the e...	03/21/2000
6024916	Cast cold tool and method for producing the same A cast cold tool is obtained through the steps of forming a casting by founding a molten steel consisting by weight percentage of 0.5 to 0.8% of C, not more than 1.0% of Si, 0.25 to 1.50% of Mn, 4.0 to 8.0% of Cr, 1.0 to 5.0% of Mo, one or both of 0.2 to ...	02/15/2000
6007923	Titanium alloy, member made of the titanium alloy and method for producing the titanium alloy member A joined tubular body comprises a titanium alloy pipe of which crystal grain is hard to coarsen at the time of welding or hot-extruding, which consists by weight percentage of at least one element selected from 0.01~10% of S, 0.01~10% of Se and 0.01~10% o...	12/28/1999
5975405	Diffusion bonding method and diffusion bonding apparatus A diffusion bonding method has a step of adjusting ends of material to be bonded before bonding the material after setting the materials in the diffusion bonding apparatus, whereas a diffusion bonding apparatus has a mechanism for finishing ends of materi...	11/02/1999
5968230	Method and furnace for disposal of steel-making waste, and operating method of the furnace A melting furnace for reforming steel-making slag so as to be available, for example, to roadbed ballast by mixing steel-making dust with the slag in molten states, which is provided with a fuel oxygen burner for melting the slag and the dust, a slag char...	10/19/1999
5934805	Method and an apparatus for flaw detection The surface of the member to be inspected is covered with powder deposited by using, for example, static electricity prior to the flaw detection. The member surface is covered so as to be partly exposed by setting the average thickness of the powder layer...	08/10/1999
5876483	Method and furnace for disposal of steel-making waste, and operating method of the furnace A melting furnace for reforming steel-making slag so as to be available, for example, to roadbed ballast by mixing steel-making dust with the slag in molten states, which is provided with a fuel oxygen burner for melting the slag and the dust, a slag char...	03/02/1999

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Assignee: Daido Tokushuko Kabushiki Kaisha