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| Number | Title | Issue Date |
| 7981394 | Method for treating tungsten carbide particles A method for the treatment of tungsten carbide is provided. The starting material contains tungsten carbide particles of a W—C system represented on a phase diagram showing a monophasic domain of a γ phase having a face-centered cubic structure, upwardly delimite... | 07/19/2011 |
| 7625542 | Method for the production of metal carbides Methods for the production of monometal carbides are disclosed. A metal source and a carbon source are reacted under conditions suitable to produce a reaction product. The reaction product may comprise fully carburized monometal carbide and excess carbon, or an inte... | 12/01/2009 |
| 7578989 | Method of using carbide and/or oxycarbide containing compositions Compositions including carbide-containing nanorods and/or oxycarbide-containing nanorods and/or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including oxycarbide-containing nanorods and/or car... | 08/25/2009 |
| 7514061 | Method of making submicron cemented carbide The present invention relates to a method of making tungsten carbide powder by dissolving at least one organic or inorganic metal salt or compound of at least one of the groups IV, V, and VI of the periodic system preferably Cr, V, Mo and W in at least one polar sol... | 04/07/2009 |
| 7465432 | Fine tungsten carbide powder and process for producing the same A process is provided for producing a fine tungsten carbide powder, which comprises the steps of drying a slurry, which is obtained by mixing an aqueous ammonium tungstate solution with a carbon powder, at low temperature, to form a precursor, mixing a reduction and... | 12/16/2008 |
| 7438880 | Production of high purity ultrafine metal carbide particles The production of ultrafine metal carbide powders from solid metal carbide and nitrogen-containing material is disclosed. The starting materials are fed together or separately to a plasma system where the solid metal carbide is melted and/or vaporized in the presenc... | 10/21/2008 |
| 7309373 | Method of making a ceramic body of densified tungsten carbide A method of making tungsten carbide and a method of making a densified tungsten carbide-containing ceramic body with a transverse rupture strength greater than 300,000 psi are disclosed. ... | 12/18/2007 |
| 7300492 | Ammonium dodecamolybdomolybdate and method of making A novel molybdenum compound, ammonium dodecamolybdomolybdate (AMM), is described which may be used in the manufacture of molybdenum metal and molybdenum carbide powders. The molybdenum compound is a dodecaheteropoly acid salt having a Keggin-type structure wherein m... | 11/27/2007 |
| 7291317 | Method for synthesizing extremely high-temperature melting materials The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as carbides and transition-metal, lanthanide and acti... | 11/06/2007 |
| 7273904 | Nanocrystals in ligand boxes exhibiting enhanced chemical, photochemical, and thermal stability, and methods of making the same Dendron ligands or other branched ligands with cross-linkable groups were coordinated to colloidal inorganic nanoparticles, including nanocrystals, and substantially globally cross-linked through different strategies, such as ring-closing metathesis (RCM), dendrimer... | 09/25/2007 |
| 7273509 | Synthesis of metal nanoparticle compositions from metallic and ethynyl compounds A process of making metal nanoparticles comprising the steps of: providing a precursor composition comprising at least one metallic compound and at least one organic compound; wherein the organic compound is selected from the group consisting of an ethynyl compound,... | 09/25/2007 |
| 7258722 | Process for manufacturing ultra fine TiC-transition metal-based complex powder Any one of a Ti-containing water-soluble salt, metatitanic acid (TiO(OH)2) slurry and ultra fine titanium oxide powder, and a transition metal containing metal salt are dissolved in water to prepare a raw material mixture. The raw material is spray-dried ... | 08/21/2007 |
| 7232556 | Titanium comprising nanoparticles and related nanotechnology Nanoparticles comprising titanium, such as nanoscale doped titanium metal compounds, inorganic titanium compounds, and organic titanium compounds, their methods of manufacture, and methods of preparation of products from nanoparticles comprising titanium are provide... | 06/19/2007 |
| 7232751 | Semiconductor device and manufacturing method therefor According to the manufacturing method of the semiconductor device of the present invention, an oxide film is formed on a metal film formed on a main surface of a semiconductor substrate by exposing the metal film to the oxidizing gas. The oxide film is then reduced ... | 06/19/2007 |
| 7229565 | Chemically assisted surface finishing process A method of surface refinement for refining a first roughness of a surface of a component to a second roughness. The method includes wetting the first roughness surface with an aqueous mixture that includes solid media. The aqueous mixture chemically alters the surf... | 06/12/2007 |
| 7208028 | Method of producing nanophase W powder by low-pressure vapor phase reaction W powder is produced by: preparing a precursor containing tungsten; producing gas by vaporizing or sublimating the precursor; separating the tungsten component by placing the gas in an inert atmosphere while maintaining pressure below atmospheric pressure; and conde... | 04/24/2007 |
| 7198771 | Polymeric and carbon compositions with metal nanoparticles The invention comprises a chemical composition with the structure shown below. The composition can be polymerized or pyrolyzed, forming transition metal nanoparticles homogeneously dispersed in a thermoset or carbon composition. The size of the nanoparticles can be ... | 04/03/2007 |
| 7153340 | Process for manufacturing nano-phase TaC-transition metal based complex powder Ultra fine TaC-transition metal based complex powder is prepared by: dispersing a mixture of a Ta-containing material and a transition metal-containing water soluble salt into a solvent; stirring the mixture and spray-drying the stirred material to obtain precursor ... | 12/26/2006 |
| 7150862 | Method of manufacturing powder A method of manufacturing a powder, by which it is possible to adjust the strength of the obtained powder is provided. The manufacturing method of a powder involves a step of preparing a slurry containing agglomerated particles of a synthetic material which is produ... | 12/19/2006 |
| 7140567 | Multi-carbide material manufacture and use as grinding media Grinding media, including shaped media such as spheres or rods ranging in size from about 0.5 micron to 100 mm in diameter, are formed from a multi-carbide material consisting essentially of two or more carbide-forming elements and carbon, with or without carbide-fo... | 11/28/2006 |
| 7118635 | Method for producing tungsten carbides by gas-phase carburization The invention relates to a method for producing wolfram carbides by gas-phase carburetion of wolfram powders and/or suitable wolfram precursor compounds in powder form at temperatures above 850° C. According to the method a CO2/CO mixture with a CO2... | 10/10/2006 |
| 7118724 | Method of producing nanophase WC powder by vapor phase reaction Nanophase WC powder is produced by preparing a precursor including tungsten; producing gas by vaporizing or sublimating the precursor; carbonizing the gas in the atmosphere without oxygen while maintaining pressure below atmospheric pressure; and condensing the carb... | 10/10/2006 |
| 7115240 | Method of producing nanophase WC-based powder by vapor phase reaction at atmospheric pressure The present invention relates to a method of producing nanophase powder, which can be used as materials for high-strength and wear-resistance cemented carbide. It purports to provide a method of producing WC powder of a 10˜20 nm grade by using vapor phase reaction ... | 10/03/2006 |
| 7108840 | Method for manufacturing nanophase TiC-based composite powders by metallothermic reduction Disclosed herein is a method for economically manufacturing high quality TiC powder, TiCN powder or ultrafine nanophase TiC+Ni (Co, Al) and TiCN+Ni (Co, Al) composite powders by means of metallothermic reduction. The method comprises the steps of preparing a startin... | 09/19/2006 |
| 7108831 | Monophasic Tungsten Carbide The present invention relates to a method of producing tungsten carbide by gas phase direct carburization of a tungsten-oxide containing starting material, wherein the starting material is reacted with a reaction gas at an increased temperature. The starting materia... | 09/19/2006 |
| 7078006 | Carbon material for producing metal-including fullerene in high yield A carbon material for producing endohedral metallofullerenes in a high yield is made of a mixture of a metal or metal compound with a carbonaceous material and is used in producing a endohedral metallofullerenes, wherein said carbon material contains a metal carbide... | 07/18/2006 |
| 7063821 | Apparatus for production of molybdenum carbide Apparatus for producing molybdenum carbide from a precursor material includes a supply of process gas and a furnace defining at least a first heating zone and a second heating zone. The furnace heats the first heating zone to a first temperature and the second heati... | 06/20/2006 |
| 7060648 | Tungsten-containing fuel cell catalyst and method of making same A tungsten-containing fuel cell catalyst having high electrochemical activity and its method of making are described. The tungsten-containing catalyst may be formed in situ in a fuel cell after the fuel cell is assembled. The catalyst is formed by a low temperature ... | 06/13/2006 |
| 7045074 | Magnetic cluster, magnetic recording medium, method for fabricating a magnetic cluster and method for fabricating a magnetic recording medium A magnetic cluster includes a (CoC2)4 tetragonal structure with Co—C2—Co bonds, and a molecular formula (CoC2)x (x: natural number). ... | 05/16/2006 |
| 7041150 | Preparation of alloys by the Armstrong method A method and apparatus for making alloys or ceramics by the subsurface injection of an equilibrium vapor of a boiling liquid of the ceramic or alloys constituents is disclosed. Various powders and products are disclosed. ... | 05/09/2006 |
| 7008695 | Metal non-oxide coated substrates Layered metal non-oxide coated substrates are disclosed comprising a three dimensional inorganic substrate having a coating of metal non-oxide derived from a pre-associated coating on at least a portion of all three dimensions thereof, produced by a unique process h... | 03/07/2006 |
| 6967011 | Method for synthesizing extremely high-temperature melting materials The invention relates to a method of synthesizing high-temperature melting materials. More specifically the invention relates to a containerless method of synthesizing very high temperature melting materials such as borides, carbides and transition-metal, lanthanide... | 11/22/2005 |
| 6936565 | Modified carbide and oxycarbide containing catalysts and methods of making and using thereof Compositions including modified carbide-containing nanorods and/or modified oxycarbide-containing nanorods and/or modified carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including modified oxyca... | 08/30/2005 |
| 6929787 | Composite and manufacturing method thereof A composite which is easy to manufacture and has excellent catalytic activity and mechanical strength is obtained by heating and drying a mixture of a carrier in powder form and a metal hydroxide in powder form or in molten form under a gas flow or under reduced pre... | 08/16/2005 |
| 6890504 | Polymeric and carbon compositions with metal nanoparticles The invention comprises a chemical composition with the structure shown below. The composition can be polymerized or pyrolyzed, forming transition metal nanoparticles homogeneously dispersed in a thermoset or carbon composition. The size of the nanoparticles can be ... | 05/10/2005 |
| 6861038 | Ceramics and method of producing ceramics A method of continuously producing a non-oxide ceramic formed of a metal constituent and a non-metal constituent. A salt of the metal constituent and a compound of the non-metal constituent and a compound of the non-metal constituent are introduced into a liquid alk... | 03/01/2005 |
| 6852304 | Fine tungsten carbide powder and process for producing the same A process is provided for producing a fine tungsten carbide powder, which comprises the steps of drying a slurry, which is obtained by mixing an aqueous ammonium tungstate solution with a carbon powder, at low temperature, to form a precursor, mixing a reduction and... | 02/08/2005 |
| 6841508 | Carbide and oxycarbide based compositions, rigid porous structures including the same, methods of making and using the same Compositions including oxycarbide-based nanorods and/or carbide-based nanorods and/or carbon nanotubes bearing carbides and oxycarbides and methods of making the same are provided. Rigid porous structures including oxycarbide-based nanorods and/or carbide bas... | 01/11/2005 |
| 6793875 | Nanostructured carbide cermet powders by high energy ball milling A method for the synthesis of method for the manufacture of carbide cermet powders, comprises high energy ball milling a mixture of precursor powders and a carbon source, followed by annealing the milled powder mixture. The precursor powders are selected from materi... | 09/21/2004 |
| 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 |
