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| Number | Title | Issue Date |
| 8092571 | Combustion reactors for nanopowders, synthesis apparatus for nanopowders with the combustion reactors, and method of controlling the synthesis apparatus The present invention relates to a combustion reactor for nanopowders, a synthesis apparatus for nanopowders using the combustion reactor, and a method of controlling the synthesis apparatus. The combustion reactor for nanopowders comprises an oxidized gas supply no... | 01/10/2012 |
| 7513930 | Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall In the method of producing metals or metal alloys of high purity, in particular metallic chromium, granules of metal containing non-metallic inclusions and a reducing agent are treated under predetermined conditions of temperature and pressure so that the reducing a... | 04/07/2009 |
| 7351271 | Method of manufacturing niobium and/or tantalum powder A method of manufacturing niobium and/or tantalum powder consisting of: a first-stage reduction process of reducing niobium and/or tantalum oxides with alkali metals and/or alkaline-earth metals to obtain low-grade oxide powder represented by (NbTa) Ox, where x=0.06... | 04/01/2008 |
| 7258721 | Carbon-containing nickel-particle powder and method for manufacturing the same Carbon-containing nickel-particle powder is provided. The carbon-containing nickel-particle powder has improved shrinkage property when fired due to the presence of carbon. Also, the carbon-containing nickel-particle powder has a very restricted degree of forming ag... | 08/21/2007 |
| 7192467 | Method for producing molybdenum metal and molybdenum metal Novel forms of molybdenum metal, and apparatus and methods for production thereof. Novel forms of molybdenum metal are preferably characterized by a surface area of substantially about 2.1 m2/g to substantially about 4.1 m2/g. Novel forms of mo... | 03/20/2007 |
| 7189279 | Cross-linked polymeric nanoparticles and metal nanoparticles derived therefrom There are provided internally cross-linked, stable polymeric materials, in the form of substantially spherical particles, each particle consisting essentially of a single macromolecule. They have the unusual property of being soluble or dispersible in a liquid mediu... | 03/13/2007 |
| 7172642 | Magnetic metal particles containing iron as main component, process for producing the same and magnetic recording medium using the same Magnetic metal particles containing iron as a main component, comprising cobalt in an amount of usually 20 to 50 atm %, calculated as Co, based on whole Fe, aluminum in an amount of usually 3 to 15 atm %, calculated as Al, based on whole Fe and a rare earth element ... | 02/06/2007 |
| 7066975 | Nitrogen-containing metal powder, production process thereof, and porous sintered body and solid electrolytic capacitor using the metal powder An object of the present invention is to provide nitrogen-containing metallic powder at high productivity, which powder contains a metal such as niobium or tantalum containing nitrogen uniformly, and enables production of an anode electrode that has high specific ca... | 06/27/2006 |
| 7051537 | Method and apparatus for carbon dioxide accelerated reactor cooldown A system and a method of its use for the accelerated cooldown of at least one reactor by injecting liquid carbon dioxide via a sparger into a pipeline connected to the reactor via a access valve upstream of the reactor. By providing an evenly distributed flow into t... | 05/30/2006 |
| 6969417 | Catalytic alloy for the dissociation of water into hydrogen and oxygen and method of making The present invention provides a method for combining sodium and aluminum into a single, substantially homogeneous alloy without the need to use potentially dangerous, toxic mercury compounds. The present invention also provides a catalytic alloy that is capable of ... | 11/29/2005 |
| 6942715 | Process for producing metallic titanium A process for producing metallic titanium includes forming metallic titanium fine particles by supplying liquid or mist titanium tetrachloride from above the surface of a reaction bath liquid containing fused magnesium and fused magnesium chloride in a reaction vess... | 09/13/2005 |
| 6923842 | Method and apparatus for producing fine particles, and fine particles A method and apparatus are invented for producing fine particles, which can readily realize the formation of fine particles of sub-μm order to 100 micron order as well as fine particles of several micrometer which cannot be realized by a conventional method and app... | 08/02/2005 |
| 6875253 | Metal alloy fine particles and method for producing thereof A novel method for preparing fine particles comprising a transition metal and a noble metal which are monodispersed and have almost no particle diameter distribution, and are transferable to a CuAu-I type L10 ordered phase, with safety and at a low cost, ... | 04/05/2005 |
| 6855185 | Method of manufacturing niobium and/or tantalum powder A method of manufacturing niobium and/or tantalum powder consisting of: a first-stage reduction process of reducing niobium and/or tantalum oxides with alkali metals and/or alkaline-earth metals to obtain low-grade oxide powder represented by (NbTa) Ox, where x=0.06... | 02/15/2005 |
| 6849104 | Metalothermic reduction of refractory metal oxides High purity refractory metals, valve metals, refractory metal oxides, valve metal oxides, or alloys thereof suitable for a variety of electrical, optical and mill product/fabricated parts usages are produced from their respective oxides by metalothermic reduction of... | 02/01/2005 |
| 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 |
| 6749663 | Ultra-coarse, monocrystalline tungsten carbide and a process for the preparation thereof, and hardmetal produced therefrom A process is described for the preparation of tungsten and/or molybdenum metal powder or carbide by reducing and optionally carburizing treatment of tungsten and/or molybdenum oxide powder in the presence of alkali metal compounds, wherein at least two alkali metal ... | 06/15/2004 |
| 6702870 | Method for preparation of iron-based powder and iron-based powder The invention concerns a process permitting the preparation of a new powder, which as such or further processed is useful within a wide variety of different fields and which has magnetic and electric properties. The powder includes at least 0.5% by weight... | 03/09/2004 |
| 6679937 | Copper powders methods for producing powders and devices fabricated from same Copper metal powders, methods for producing copper metal powders and products incorporating the powders. The copper metal powders have a small particle size, narrow size distribution and a spherical morphology. The method includes forming the metal partic... | 01/20/2004 |
| 6626976 | Method for producing molybdenum metal Novel forms of molybdenum metal, and apparatus and methods for production thereof. Novel forms of molybdenum metal are preferably characterized by a surface area of substantially 2.5 m2 /g. Novel forms of molybdenum metal are also preferably ch... | 09/30/2003 |
| 6586046 | Fluidized bed apparatus and method for treatment of nonspherical, nonequiaxed particles Apparatus and method for producing metallic flake having an environmental coating for use in oxidative and corrosive atmospheres. Fluidized bed techniques are utilized to perform a controlled oxidation of metallic particles that include aluminum. The flui... | 07/01/2003 |
| 6521016 | Method of producing nanophase Cu-Al2O3 composite powder The present invention relates to a method of producing nanophase Cu--Al2 O3 composite powder by means of 1) the producing precursor powders by centrifugal spray drying process using the water base solution, in which Cu-nitrate (Cu(NO... | 02/18/2003 |
| 6478845 | Boron addition for making potassium-doped tungsten A boron addition for making potassium-doped tungsten powder is described herein. Boron is added to a potassium-doped starting material, preferably in the form of boric acid, and then the mixture is reduced to form a potassium-doped tungsten powder. The bo... | 11/12/2002 |
| 6432161 | Nitrogen-containing metal powder, production process thereof, and porous sintered body and solid electrolytic capacitor using the metal powder An object of the present invention is to provide nitrogen-containing metallic powder at high productivity, which powder contains a metal such as niobium or tantalum containing nitrogen uniformly, and enables production of an anode electrode that has high ... | 08/13/2002 |
| 6372015 | Method for production of metal powder A process for production of metallic powder comprising contacting a metallic chloride gas with a reductive gas in a temperature range for a reducing reaction to form a metallic powder and subsequently contacting the metallic powder with an inert gas such ... | 04/16/2002 |
| 6323055 | Tantalum sputtering target and method of manufacture Described is a method for producing high purity tantalum, the high purity tantalum so produced and sputtering targets of high purity tantalum. The method involves purifying starting materials followed by subsequent refining into high purity tantalum.... | 11/27/2001 |
| 6168644 | Titanium-base powders and process for production of the same Titanium hydride powder with a maximum particle diameter of substantially 150 μm or less, the powder with particle diameters of 10 μm or less being 8% or less by weight, which is produced via step for embrittling a titanium and titanium alloy by hydroge... | 01/02/2001 |
| 6165247 | Methods for producing platinum powders Platinum powders and methods for producing platinum powders. The powders preferably have a small particle size, narrow size distribution and a spherical morphology. The method includes forming the particles by a spray pyrolysis technique. The invention al... | 12/26/2000 |
| 6106614 | Method and apparatus for fabricating near spherical semiconductor single crystal particulate and the spherical product produced An apparatus and a method for producing single crystal semiconductor particulate in near spherical shape and the particulate product so formed is accomplished by producing uniform, monosized, near spherical droplets; identifying the position of an underco... | 08/22/2000 |
| 6036742 | Finely divided phosphorus-containing iron Finely divided phosphorus-containing iron is prepared by reacting iron pentacarbonyl with a volatile phosphorus compound, in particular PH3, in the gas phase. The resulting phosphorus-containing iron powders and iron whiskers have a particularl... | 03/14/2000 |
| 5984997 | Combustion of emulsions: A method and process for producing fine powders A process for producing nanoscale powders, and the powders so produced. The process comprises mixing an emulsion comprising all of the elements of the desired powder composition and a combustible fuel, and then combusting that emulsion to produce a powder... | 11/16/1999 |
| 5976217 | Method for the reduction of metallic compounds The preparation of suitable powdered metal is important in powder metallurgy technology. To date, powdered metals, in particular refractory metals, have been produced using very time-consuming and, consequently, costly methods for the reduction of metalli... | 11/02/1999 |
| 5958156 | Process for treating a particulate material within a rotating retort Apparatus (1) and process for treating particulate material or powder (33) of a size capable of being fluidized in a retort (31) mounted for rotation on a pair of end axles (18, 41). Retort (31) is mounted on a tilt frame (5) for tilting movement in a ver... | 09/28/1999 |
| 5912399 | Chemical synthesis of refractory metal based composite powders A new tungsten compound is formed by reacting ammonium metatungstate with guanidine carbonate. Such a compound can be converted to metallic tungsten, tungsten carbide or oxycarbide, and tungsten nitride or oxynitride. One can also make multiphase composit... | 06/15/1999 |
| 5865874 | Hydrogen storage alloy The surface of material containing a hydrogen storage alloy are treated with an organometallic compound to provide the alloy with corrosion resistance.... | 02/02/1999 |
| 5830257 | Manufacturing method for alumina-dispersed reinforced copper A manufacturing method for an alumina-dispersed reinforced copper alloy according to the invention is an improved method which is capable of manufacturing efficiently alumina-dispersed reinforced copper having both good electro-conductivity used for wire-... | 11/03/1998 |
| 5776264 | Method for producing amorphous based metals Amorphous tungsten, cobalt, nickel, molybdenum, iron and alloys thereof can be formed by reducing metal-containing compositions to form the elemental metal wherein the particle size of the elemental metal is less than about 80 microns. This is oxidized in... | 07/07/1998 |
| 5746803 | Metallic-carbide group VIII metal powder and preparation methods thereof A transition metal carbide-Group VIII metal powder comprising discrete particles of a transition metal carbide and Group VIII metal wherein: substantially all of the particles have a size of at most 0.4 micrometer; the transition metal carbide is selected... | 05/05/1998 |
| 5603781 | Method for inhibiting the oxidation of hard metal powder A method for inhibiting the oxidation of powder of a hard metal, characterized by heat-treating the milled powder of a hard metal at a temperature between about 300° C. and 500° C. for at least 1 hr in vacuum is disclosed.... | 02/18/1997 |
| 5442978 | Tantalum production via a reduction of K2TAF7, with diluent salt, with reducing agent provided in a fast series of slug additions Fine tantalum powder of high surface area, high capacitance, low leakage and high breakdown voltage is produced by sodium reduction of highly dilute fluotantalate salt charges at high reaction temperatures and stepwise additions of the sodium reducing age... | 08/22/1995 |
