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| Number | Title | Issue Date |
| 8101006 | Centrifugal atomization for producing zinc powder A centrifugal impact atomization process for producing zinc or zinc alloy powder from molten zinc. A stream of molten zinc is injected onto the surface of a spinning disk contained within an atomization chamber. The disk has a cup shaped cavity having an open end, o... | 01/24/2012 |
| 7803210 | Method for producing spherical particles having nanometer size, crystalline structure, and good sphericity The present invention provides a method for producing nanometer-size spherical particles. The method includes a first step for producing intermediate spherical particles. The intermediate spherical particles include a polycrystalline or single-crystalline region, ha... | 09/28/2010 |
| 7374840 | Centrifugally atomized zinc alloy powder for alkaline batteries This invention relates to centrifugal atomized zinc alloy powders for alkaline batteries consisting of (a) 0.005-2% by weight of indium, and 0.005-0.2% by weight of either one of Al and Bi, or (b) 0.005-2% by weight of indium, and 0.005-0.2% by weight of Bi, and 0.0... | 05/20/2008 |
| 7246758 | Metal atomizing device A metal atomizing device includes a casing with an inlet tube for providing liquid metal into the casing and an outlet is defined through the casing. The inlet tube and the outlet share a common axis. A polygonal impact member is located at an outlet of the inlet tu... | 07/24/2007 |
| 7131597 | Atomization technique for producing fine particles This disclosure relates to a novel process for atomizing a liquid material or a mixture of liquid materials. More specifically, this disclosure advances the art by utilizing the inertial forces created in an elevated acceleration environment to further miniaturize a... | 11/07/2006 |
| 7126081 | Radial pulsed arc discharge gun for synthesizing nanopowders A system and method for synthesizing nanopowder which provides for precursor material ablation from two opposing electrodes that are spaced apart within a gaseous atmosphere, where a plasma is created by a high power pulsed electrical discharge between the electrode... | 10/24/2006 |
| 7097806 | Rapid surface cooling of solder droplets by flash evaporation A mist of liquid coolant is introduced into the path of atomized, molten, solder droplets. The mist and other conditions within the chamber are engineered to enable the liquid coolant droplets in the mist to contract the surfaces of molten solder droplets and be fla... | 08/29/2006 |
| 6972115 | Apparatus and methods for the production of powders Metallic powders are formed by the electrically exploded wire (EEW) process. An apparatus (20) for manufacturing such powders includes a closed loop recirculating gas path between a reaction chamber (100) and an extractor (32). A wire (31... | 12/06/2005 |
| 6965629 | Method and apparatus for initiating a pulsed arc discharge for nanopowder synthesis A nanopowder synthesis system having an autofuser device which obviates the need for external power switches, and which accommodates repeated discharges (of the order of 107) between ablating electrodes of precursor material at a high repetition rate (≧... | 11/15/2005 |
| 6916385 | Method of manufacturing magnet materials, and ribbon-shaped magnet materials, powdered magnet materials and bonded magnets Disclosed herein is a method of manufacturing a magnetic material which can provide a bonded magnet having excellent magnetic properties and having excellent reliability. A melt spinning apparatus 1 is provided with a tube 2 having a nozzle 3 at... | 07/12/2005 |
| 6830633 | Magnetic material manufacturing method, ribbon-shaped magnetic materials, powdered magnetic materials and bonded magnets A magnetic material manufacturing method, a ribbon-shaped magnetic material manufactured by the method, a powdered magnetic material formed from the ribbon-shaped magnetic material and a bonded magnet manufactured using the powdered magnet material are disclosed. Th... | 12/14/2004 |
| 6676726 | Method and apparatus for manufacturing minute metallic sphere A manufacturing method of minute metallic spheres of the present invention comprises a heating means for heating and melting a metal to form a metallic sphere, a measurement means for measuring the injected molten metal into a predetermined volume, and a ... | 01/13/2004 |
| 6617504 | Thermoelectric element, method of fabricating the same, and thermoelectric module employing the same A method of fabricating a thermoelectric element of enhanced thermoelectric performance is provided by improving the preparation of thermoelectric material and employing hot plastic working in combination. The method comprises the step (a) of mixing and h... | 09/09/2003 |
| 6554913 | Method of manufacturing magnetic powder, magnetic powder and bonded magnets A method of manufacturing magnetic powder is disclosed. This method can provide magnetic powder from which a bonded magnet having excellent magnetic properties and reliability can be manufactured. A melt spinning apparatus 1 is provided with a tube 2 havi... | 04/29/2003 |
| 6423113 | Continuous fluid atomization of materials in a rapidly spinning cup Fine powders are made from molten metals and alloys on a continuous basis. A rapidly spinning shallow cup has an atomizing fluid such as water, oil or any other hydrocarbon supplied to the cup to form a thin sheet or layer which is distributed on the inne... | 07/23/2002 |
| 5922102 | Procedure for manufacturing zinc particles A procedure for making zinc particles of a size, shape and composition such that the particles can be subsequently used in a process for manufacturing zinc parts from such particles in either molten or powder form includes the initial step of heating zinc... | 07/13/1999 |
| 5855642 | System and method for producing fine metallic and ceramic powders A system and method for producing fine powders. The system includes a rotary atomization device for forming a moving flow of a molten source material; a source of atomizing material; a nozzle for directing a jet of the atomizing material at the moving flo... | 01/05/1999 |
| 5840096 | Process for the production of polarizing glass A process for producing a polarizing glass containing shape-anisotropic metallic particles dispersed in an oriented state therein, which comprises drawing a glass preform containing metallic halide particles dispersed therein while its viscosity being hel... | 11/24/1998 |
| 5738705 | Atomizer with liquid spray quenching Method and apparatus for making metallic powder particles wherein a metallic melt is atomized by a rotating disk or other atomizer at an atomizing location in a manner to form molten droplets moving in a direction away from said atomizing location. The at... | 04/14/1998 |
| 5735931 | Slag granulation method and apparatus A granulator comprises a rotary atomizer on to which the molten material to be granulated is poured in a stream. The rotation of the atomizer causes the molten material to be ejected therefrom in the form of globules. No fluid jets are used to break up th... | 04/07/1998 |
| 5605560 | Method of producing an atomized alloy power Alloy powder which is low in price and is unlikely to be oxidized on the surface, and a dispersion-type conductor using the alloy powder in which electromigration is not likely to occur. Melt of copper and silver is cooled at a high cooling speed of 10 | 02/25/1997 |
| 5534086 | Method for making a cobalt-boride dispersion-strengthened copper A dispersion-strengthened copper alloy is disclosed having an exceptional combination of strength, ductility, and thermal conductivity. The copper alloy comprises: copper, 0.01 to 2.0 weight % boron and 0.1 to 6.0 weight % cobalt, and cobalt-boride disper... | 07/09/1996 |
| 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 |
| 5409521 | Slag granulation A granulator comprises a rotary atomiser (1) on to which the molten material to be granulated is poured in a stream. The rotation of the atomiser (1) causes the molten material to be ejected therefrom in the form of globules. No fluid jets are used to bre... | 04/25/1995 |
| 5340377 | Method and apparatus for producing powders Apparatus for producing metal powders by atomization, the apparatus including melting means for melting the material to be atomized, an atomizing enclosure in which a dispersion head rotating at high speed is disposed to scatter the molten material in ato... | 08/23/1994 |
| 5302182 | Method of preparing particles with a controlled narrow distribution The method for preparing metal powders with a narrow particle size distribution includes providing a disintegrator with a working chamber containing counter-rotating disks equipped with teeth designed to impart high tangential velocities to particles cont... | 04/12/1994 |
| 5259861 | Method for producing rapidly-solidified flake-like metal powder Disclosed is a method and an apparatus for producing rapidly-solidified flake particles, which combines centrifugal atomization with metal substrate cooling. A stream of molten metal is disintegrated centrifugally into droplets by a rotating disk. Then th... | 11/09/1993 |
| 5013346 | Method of making additive powders for coating materials or plastics The present invention provides an additive powder for coating materials or plastics, comprising a particle of a metal or glass, comprised of a particle having a thickness of 0.5 to 5 μm, a minor axis/major axis of from 5 to 500 μm, an aspect ratio (rati... | 05/07/1991 |
| 4900355 | Method for making high-purity metal powder by jet-cooling A dry method for making high-purity metal powder through quenching, by melting metal in a melting vessel with high-frequency induction in vacuo or in an inert gas atmosphere, lowering the melting vessel to a jetting position where a rotary cooling board i... | 02/13/1990 |
| 4886547 | Powder manufacturing apparatus and method therefor The present invention provides a method of efficiently and stably manufacturing a high-purity metal powder of a desired particle size, which is used for powder metallurgy or the like, by generating arc 18 between electrodes 12 and 13 to melt the distal en... | 12/12/1989 |
| 4768577 | Dissolution of inert gas in a metal alloy A metal powder is produced by inert gas atomization processes. The atomizon process is regulated to provide a preselected level of inert gas alloyed in the metal.... | 09/06/1988 |
| 4560404 | Method of producing material for superconductor A method of producing a composite material of and Nb or V used for a superconductive wire comprises vacuum - melting two kinds of raw materials, 70 wt % Cu and 30 wt % Nb or V to form a melt; scattering the melt by a rotating disc to form a plurality of f... | 12/24/1985 |
| 4540546 | Method for rapid solidification processing of multiphase alloys having large liquidus-solidus temperature intervals Rapid solidification processing by liquid quenching is made practical for multiphase alloys having relatively large liquidus-solidus temperature intervals by a new processing technique termed "melt mix reaction" involving chemically reacting two starting ... | 09/10/1985 |
| 4435342 | Methods for producing very fine particle size metal powders A method is provided for producing ultra fine particles of metal by delivering a molten stream of metal onto a rotating primary annular surface, discharging molten fine droplets from the edge of the primary annular surface against an inclined secondary an... | 03/06/1984 |
| 4415511 | Rotary atomizing process In the process of forming metal powders by rotary atomization, the atomizer disk is first coated with a stable compound of the molten metal to be poured or, if the metal to be poured is an alloy, the disk is coated with a compound of the base metal of the... | 11/15/1983 |
| 4402884 | Method for producing ferro-nickel shots A method for producing ferro-nickel shots which comprises adding a manganese source to molten ferro-nickel, pouring the molten ferro-nickel containing manganese onto a rotating disc to granulate the molten ferro-nickel stream, and cooling the granules thu... | 09/06/1983 |
| 4347199 | Method and apparatus for rapidly freezing molten metals and metalloids in particulate form Described are a method and apparatus for freezing molten metals and metalloids in particulate or flake form at very rapid cooling rates. A volatile coolant liquid is fed to the center of a rapidly rotating disc-like member to create an outwardly flowing f... | 08/31/1982 |
| 4343750 | Method for producing metal powder A method is set forth wherein powder is produced by melting metal in a melting furnace where it is then poured into a tundish which directs the molten metal onto a spinning disc means. The tundish is located at the center of a nozzle plate which contains ... | 08/10/1982 |
| 4321086 | Preparation of micron sized metal droplets The preparation of micron sized droplets of high melting point metals by shearing the metal in the molten state into micron sized droplets while in a carrier in the form of a molten inorganic salt, glass or gas, in the presence of an oxidizing agent to fo... | 03/23/1982 |
| 4259270 | Apparatus and method for the manufacture of splat foils from metallic melts An apparatus is disclosed for manufacturing splat foils by disintegration and rapid solidification of metallic melts. The apparatus has a self-consuming electrode disposed above a rotatable counter electrode. Attached to the counter-electrode is a conical... | 03/31/1981 |