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| Number | Title | Issue Date |
| 7819939 | Synthesis of nickel nanopowders The invention relates to a method of making a nickel powder having an average particle size of less than about 100 nanometers, comprising contacting, at a temperature of about 50° C. to about 95° C., a reduction solution with a nickel solution to form a reaction m... | 10/26/2010 |
| 7520915 | Method of preparing nano scale nickel powders by wet reducing process There is provided a method of preparing nano scale nickel powders by wet reducing process. An embodiment of the method of preparing nickel powders comprises preparing the first solution formed by mixing water and a base, preparing the second solution formed by mixin... | 04/21/2009 |
| 7399336 | Non-magnetic nickel powders and method for preparing the same Provided are non-magnetic nickel powders and a method for preparing the same. The nickel powders have non-magnetic property and a HCP crystal structure. The method include (a) dispersing nickel powders with a FCC crystal structure in an organic solvent to prepare a ... | 07/15/2008 |
| 7396379 | Hydrogen storage battery; positive nickel electrode; positive electrode active material and methods for making A hydrogen storage battery with improved cycle life and a method for making the same. The battery has a negative electrode with an electrochemically active negative material and a negative electrode capacity and a positive electrode electrochemically coupled with th... | 07/08/2008 |
| 7291577 | Hydrometallurgical process for production of supported catalysts A process for the production of a supported catalyst. The process comprises heating a slurry that comprises a catalyst support and at least one active catalytic ingredient precursor. Gas is introduced to the slurry at a sufficient pressure to reduce the at least one... | 11/06/2007 |
| 7285152 | Method of manufacturing chain-structure metal powder A method of manufacturing the chain-structure metal powder comprises precipitating a metal powder by a reaction performed in an aqueous solution in which nickel ions, complex ions, and titanium ions containing trivalent titanium ions (Ti3+) and tetravalent titanium ... | 10/23/2007 |
| 7238221 | Metallic nickel powders, method for preparing the same, conductive paste, and MLCC Provided are a method for preparing metallic nickel powders capable of decreasing the content of an alkaline metal in the metallic nickel powders, metallic nickel powders with the low content of an alkaline metal, a conductive paste including metallic nickel powders... | 07/03/2007 |
| 7211126 | Method for preparing non-magnetic nickel powders Provided is a method for preparing non-magnetic nickel powders. The method include (a) heating a mixture including a nickel precursor compound and a polyol to reduce the nickel precursor compound to nickel powders with a face-centered cubic (FCC) crystal structure, ... | 05/01/2007 |
| 7186289 | Nickel powder and production method therefor There is provided a nickel powder suitable as conductive particles for use in conductive paste and conductive resin, that is inexpensive, has superior weather resistance, low resistivity when kneaded with resin, and is stable when used in the long-term, and a produc... | 03/06/2007 |
| 7182977 | Composite substance containing metal particles, conductive paste and manufacturing method thereof A composite substance for forming a conductive paste, comprises a solvent and metal or metal compound particles. The solvent is compatible with an organic component included in the conductive paste, and the metal or metal compound particles are dried metal or metal ... | 02/27/2007 |
| 7018605 | Sulfidation reaction control method A method of sulfidation removal of zinc using hydrogen sulfide is provided, desirably at a temperature at 60° C. or lower, wherein in a container that is pressurized at 0.1 MPa or less with respect to atmospheric pressure, by making the pH of the solution 1.5 to 4.... | 03/28/2006 |
| 6939390 | Nickel powder, method for preparing the same and paste for use in making electrodes for electronic parts Nickel powder includes, on the basis of the total number of particles, not less than 10% of particles whose particle size is not less than 1.2 times the average particle size, as determined by the SEM observation; and not less than 10% of particles whose particle si... | 09/06/2005 |
| 6863708 | Method for producing metal powder and metal powder, and electroconductive paste and monolithic ceramic capacitor Metal chloride vapor and reducing gas are brought into contact to form metallic powder, the metallic powder is washed in carbonic acid aqueous solution, and the metallic powder is classified in a liquid phase. In this way, metallic powder, such as nickel powder, in ... | 03/08/2005 |
| 6733564 | Process for recovery of nickel from spent catalyst The present invention relates to a process for recovery of nickel and alumina from spent catalyst by direct leaching with sulphuric acid in presence of small amount of an additive. The invention is useful for recovery of both nickel and sources of nickel and therefo... | 05/11/2004 |
| 6712874 | Method for the reduction of nickel from an aqueous solution The invention relates to a method for the precipitation of nickel from an aqueous solution containing its sulphate as a metallic powder suitable as an alloying element for refined steel. In this method, nickel reduction takes place continuously in one or several aut... | 03/30/2004 |
| 6702871 | Method for the reduction of nickel The invention relates to a method for the precipitation of nickel from its aqueous solution as a metal powder using hydrogen. The aqueous solution containing nickel compounds is neutralised first with an earth alkali or alkali compound so the nickel preci... | 03/09/2004 |
| 6632265 | Nickel powder, method for preparation thereof and conductive paste The nickel powder is characterized in that the rate of the nickel particles whose particle size is not less than 1.2 time the average particle size as determined by the observation with an SEM is not more than 5% of the total number of nickel particles an... | 10/14/2003 |
| 6596052 | Ultrafine nickel powder Provided is an ultrafine nickel powder suitable for a laminated ceramic capacitor electrode material. According to the ultrafine nickel powder, cracks and/or delamination are not liable to generate in the process for producing a ceramic capacitor, and its... | 07/22/2003 |
| 6596051 | Heterogenite material for making submicron cobalt metal powders A high-surface-area heterogenite (HCoO2) material is described for use in making submicron cobalt metal powders. The HCoO2 material has a surface area of at least about 90 m2 /g and is preferably produced by dehydrating a ... | 07/22/2003 |
| 6592645 | Method for producing fine powder of metallic nickel comprised of fine spherical particles A process for the production of fine powder of metallic nickel which comprises a first step of dissolving nickel carbonate and/or nickel hydroxide in aqueous ammonia or in an aqueous solution of ammonia and at least one selected from the group consisting ... | 07/15/2003 |
| 6585796 | Metal powder, method for producing the same, conductive paste using the same, and monolithic ceramic electronic component A metal powder is formed by the steps of preparing a reducing agent solution, preparing a mixed metallic salt solution by dissolving a nickel salt and a copper salt in a solvent, and mixing the reducing agent solution and the mixed metallic salt solution ... | 07/01/2003 |
| 6554885 | Pre-alloyed powder A process is described for the production of metal powder and alloy powders containing at least one of the metals iron, copper, tin, cobalt or nickel, by mixing aqueous metal salt solutions with an aqueous carboxylic acid solution, separating the precipit... | 04/29/2003 |
| 6506229 | Two experimental trials using the system 10 demonstrate the efficacy of the present process: A continuous method for generating substantially submicron sized metal particles in a liquid dispersion of known viscosity. Metal carbonyl gas and an inert carrier gas, with an optional dilutant gas, are introduced into a heated liquid bath wherein the me... | 01/14/2003 |
| 6503291 | Method for manufacturing a metal powder, a metal powder, an electroconductive paste using the same, and a multilayer ceramic electronic component using the same Provided is a method for manufacturing a metal powder by providing a reducing solution by dispersing caustic alkali, and hydrazine and/or hydrazine hydrate into a solvent; providing a metal salt solution comprising a salt of electroconductive metal, a rar... | 01/07/2003 |
| 6500227 | Process for production of ultrafine nickel powder In a process for production of ultrafine nickel powder, raw material gas having a partial pressure of nickel chloride vapor within a range from 0.2 to 0.7 is fed into a reducing furnace and the nickel chloride vapor is reduced with hydrogen while flowing ... | 12/31/2002 |
| 6455746 | Ultrafine polymetallic particles, preparation and use for hydrogenating olefins and for coupling halogenated aromatic derivatives The invention concerns ultrafine polymetallic particles obtained from reducing a mixture of salts dissolved in an organic solvent by an alkali or alkaline earth metal hydride, at a temperature not higher than the solvent reflux temperature, the mixture of... | 09/24/2002 |
| 6402803 | Ultrafine nickel powder Provided is an ultrafine nickel powder suitable for a laminated ceramic capacitor electrode material. According to the ultrafine nickel powder, cracks and/or delamination are not liable to generate in the process for producing a ceramic capacitor, and its... | 06/11/2002 |
| 6346137 | Ultrafine cobalt metal powder, process for the production thereof and use of the cobalt metal powder and of cobalt carbonate Ultrafine cobalt metal powder consisting of fine crystallites, wherein the crystallites, wherein the crystallitex exhibit a rice-grain shaped to spherical habit and more than 90% of the crystallites have a diameter in the range of from 0.5 to 2 μm, a pro... | 02/12/2002 |
| 6235077 | Process for production of nickel powder Chlorine gas from a supply nozzle is mixed with the vapor of nickel chloride and the mixed gas is supplied from a supply nozzle into a hydrogen gas atmosphere in a reduction reactor at a reduction temperature of 900 to 1100° C. The volume of chlorine gas... | 05/22/2001 |
| 6228141 | Nickel fine powder and method for preparing the same Nickel fine powder comprises nickel and phosphorus dispersed in the nickel in an amount ranging from 0.01 to 2% by weight on the basis of the weight of the nickel and having a particle size of not more than 0.5 μm. The nickel fine powder can be prepared ... | 05/08/2001 |
| 6162277 | Nickel fine powder and method for preparing the same A nickel fine powder includes 0.02 to 1.0% by weight of magnesium and/or 0.02 to 0.1% by weight of calcium dispersed in the nickel. A method for preparing the nickel fine powder includes the steps of forming nickel hydroxide by mixing an aqueous solution ... | 12/19/2000 |
| 6156094 | Method for producing metal powder A method for producing metal powder which involves the step of making an alkaline hydroxide, hydrazine or a hydrazine hydrate, and a metallic salt co-exist in a solvent comprising an alcohol, at least a portion of each being dissolved; wherein, in the ste... | 12/05/2000 |
| 6120576 | Method for preparing nickel fine powder A method for preparing nickel fine powder is herein disclosed, which comprises the steps of mixing an aqueous sodium hydroxide solution comprising, on the basis of the total weight of the sodium hydroxide present in the aqueous solution, 75 to 85% by weig... | 09/19/2000 |
| 6090179 | Process for manufacturing of metallic power A process for manufacturing of metal powder from a halogen containing chemical compound of the metal. The process involves thermal treatment of the compound within a closed reactor and in non-oxidizing atmosphere so as to induce decomposition of the compo... | 07/18/2000 |
| 6019813 | Cobalt metal agglomerates, process for producing the same and their use The present invention relates to cobalt metal agglomerates consisting of peanut-shaped primary particles with average particle sizes in the range from 0.5 to 2 μm, to a process for the production thereof and to the use thereof.... | 02/01/2000 |
| 6015447 | Cobalt metal agglomerates, a method of producing them and their use The present invention relates to cobalt metal agglomerates consisting of peanut-shaped primary particles, to a process for the production thereof and to the use thereof.... | 01/18/2000 |
| 5951739 | Process for preparing x-ray amorphous and nanocrystalline metal powders X-ray amorphous and nanocrystalline elemental metal powders of groups IB to VIIIB of the Periodic Table are prepared by reacting halides of these metals with alkali metal hydrides or alkaline earth metal hydrides in an organic solvent with continual milli... | 09/14/1999 |
| 5759230 | Nanostructured metallic powders and films via an alcoholic solvent process Nanostructured metal powders and films are made by dissolving or wetting a metal precursor in an alcoholic solvent. The resulting mixture is then heated to reduce the metal precursor to a metal precipitate. The precipitated metal may be isolated, for exam... | 06/02/1998 |
| 5584908 | Micron-sized nickel metal powder and a process for the preparation thereof A process is provided for the production of a nickel metal powder by reduction of an ammoniacal nickel (II) carbonate solution essentially free of metallic nickel. A soluble silver salt is added in an amount to provide a soluble silver to nickel weight ra... | 12/17/1996 |
| 5246481 | Production of metallic powder A process for the production of powdered metallic cobalt by reduction of cobaltous ammonium sulphate solutions. A soluble silver salt, preferably silver sulphate, is added in an amount to provide a soluble silver to cobalt weight ratio in the range of 1 t... | 09/21/1993 |
