Quotables
"Inventing is a combination of brains and materials. The more brains you use, the less material you need."
Charles Kettering
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8177882 | Process for recovering metals and metal compounds from mined ore and other metal-bearing raw source materials A method for selectively recovering a metal from mined ore and other metal-bearing raw source materials is disclosed. The method involves mixing with an aqueous medium a metal-bearing ore and/or other raw source material containing a first metal in an insoluble form... | 05/15/2012 |
| 8034158 | Method of manufacturing Fe and Ni containing material, ferronickel mass using the Fe and Ni containing material and method for manufacturing the ferronickel mass There are provided a method of manufacturing an Fe/Ni-containing material having a low content of sulfur (S) from an Fe/Ni/SO4-containing liquid waste, a ferronickel mass using the Fe/Ni-containing material, and a method of manufacturing the ferronickel m... | 10/11/2011 |
| 7964015 | Metal extraction without cyanide An improved process and composition for the extraction of metal from a metal-laden ore, soil or rock is provided. A liquid, three-component aqueous lixiviant comprises water, an alkali metal salt and a low pH acidic composition. A four-component aqueous lixiviant co... | 06/21/2011 |
| 7811357 | Method for recovering rare metals in zinc leaching process Sulphidic zinc concentrate usually also includes small amounts of rare metals such as indium and gallium. If the content of these metals in the raw material is sufficiently high, their recovery may be economically worthwhile. In the method according to the invention... | 10/12/2010 |
| 7785395 | Method for the recovery of gold from sulphide concentrate The invention relates to a method for recovering gold from a sulphidic concentrate, particularly one containing arsenopyrite and/or pyrite, hydro-metallurgically. The concentrate is first subjected to leaching with a concentrated solution of alkali chloride and copp... | 08/31/2010 |
| 7670407 | Method of producing titanium A method of producing titanium metal from a titanium-containing material includes the steps of producing a solution of M″TiF6 from the titanium-containing material, selectively precipitating M′2TiF6 from the solution by the addit... | 03/02/2010 |
| 7517384 | Method for improving metals recovery using high temperature pressure leaching The present invention is directed to a system for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which otherwise tend ... | 04/14/2009 |
| 7387767 | Recovery of nickel, cobalt, iron, silica, zinc and copper from laterite ore by sulfuric acid leaching A process for recovering nickel and cobalt values from nickel- and cobalt-containing laterite ores as an enriched mixed nickel and cobalt sulphide intermediate and for producing nickel and cobalt metal from the nickel and cobalt sulphide intermediate. The laterite o... | 06/17/2008 |
| 7304153 | Polyol polyester synthesis Polyol polyesters useful as nondigestible fat substitutes are prepared by improved heterogeneous interesterification processes between fatty acid esters of easily removable alcohol and polyol characterized by having one or more improvements such as using low levels ... | 12/04/2007 |
| 7214644 | Cross-coupling reactions A method for producing a copper/palladium colloid catalyst useful for Suzuki couplings. ... | 05/08/2007 |
| 7211230 | Process for producing nanometer grade powders The present invention discloses a process for producing nanometer powders, comprising the following steps: (a) providing reactant solution A and reactant solution B that can rapidly react to form precipitate; (b) continuously adding said solution A and solution B in... | 05/01/2007 |
| 7166145 | Recovery of precious metals This invention relates to the recovery of precious metals and, more particularly, to the recovery of precious metals, such as platinum group metals, gold and rhenium, from various sources using a solution comprising at least one ammonium salt, at least one halogen s... | 01/23/2007 |
| 7125436 | Method for improving metals recovery using high temperature pressure leaching The present invention is directed to a system for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which otherwise tend ... | 10/24/2006 |
| 7052528 | Method for removal of Mn from cobalt sulfate solutions The present invention provides a method for the removal of substantially all the amount of Mn contained in cobalt containing solution thereby to obtain purified cobalt solution with Mn content of 10 ppm or less and specifically a method for removing Mn from cobalt s... | 05/30/2006 |
| 7037357 | Recovery of metals from jarosite-containing materials A method to dissolve at least one metal from jarosite or other iron hydroxyl sulphate containing-material which includes the steps of subjecting the material to alkaline treatment in a brine solution to facilitate jarosite decomposition, and acidification of the bri... | 05/02/2006 |
| 7033480 | Process for recovering platinum group metals from material containing base metals The process of the present invention recovers platinum group metal(s), such as platinum and palladium, from PGM-containing materials containing base metals, such as copper and nickel. The process controls sulfur levels by using solvent extraction 306 to remov... | 04/25/2006 |
| 7008964 | Contaminant removal from natural resources A zero-valent metal emulsion containing zero-valent metal particles is used to remediate contaminated natural resources, such as groundwater and soil. In a preferred embodiment, the zero-valent metal emulsion removes heavy metals, such as lead (Pb), from contaminate... | 03/07/2006 |
| 6958308 | Deposition of dispersed metal particles onto substrates using supercritical fluids A method for producing dispersed metal particles on a substrate and the compositions produced is disclosed. A method for producing the particles comprises exposing an organometallic and a particulate substrate to supercritical or near supercritical fluid under condi... | 10/25/2005 |
| 6893482 | Method for improving metals recovery using high temperature pressure leaching The present invention is directed to a system for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which otherwise tend ... | 05/17/2005 |
| 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 |
| 6626979 | Method for improving metals recovery using high temperature pressure leaching The present invention is directed to a process for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which oth... | 09/30/2003 |
| 6471743 | Methods for leaching of ores Disclosed and claimed are efficient methods for leaching minerals from ores using an acidic solution such as sulfuric acid. Additional factors which can improve mineral recovery include the use of an alkali metal halide, grinding the ore, addition of a ca... | 10/29/2002 |
| 6468327 | Process for processing residual substances containing at least one nonferrous metal and/or compounds thereof The invention relates to a method for processing residues containing at least one non-ferrous metal, preferably chosen from the group comprising zinc, lead, nickel, copper and cadmium and/or compounds thereof. According to this method, the non-ferrous met... | 10/22/2002 |
| 6451088 | Method for improving metals recovery using high temperature leaching The present invention is directed to a process for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which oth... | 09/17/2002 |
| 6416590 | Solder powder and method for preparing the same and solder paste An organic acid salt is deposited on the surface of a solder powder containing Sn and Zn. Alternatively, 0.5 to 10 wt. % of a nonionic surfactant is added to a flux. By a method comprising such a procedure, provided are a lead-free solder powder and solde... | 07/09/2002 |
| 6409797 | Method of making metals and other elements from the halide vapor of the metal A method of producing a non-metal element or a metal or an alloy thereof from a halide or mixtures thereof. The halide or mixtures thereof are contacted with a stream of liquid alkali metal or alkaline earth metal or mixtures thereof in sufficient quantit... | 06/25/2002 |
| 6383255 | Method for recovering the valuable metal content of a sulphuric acid leaching solution A method for winning the valuable metal content of a leaching solution acidified with sulphuric acid, by solvent extraction and electrowinning and a following final product winning stage, for instance an electrowinning stage, wherein the pH of the leachin... | 05/07/2002 |
| 6375703 | Method of synthesizing nickel fibers and the nickel fibers so prepared The present invention discloses s novel synthesis method of nickel fibers. The method of the present invention involves reducing nickel ions in an aqueous solution with a reducing agent in the presence of a base, a pH buffer, and a magnetic field or a sur... | 04/23/2002 |
| 6117209 | Hydrometallurgical process for treating alloys and drosses to recover the metal components A hydrometallurgical method involves treating a dross source containing typically both antimony and tin and treating the dross to a series of chemical operations to yield a soft lead precursor, suitable for making soft lead for lead-based alloys for batte... | 09/12/2000 |
| 6039790 | Method for recovering nickel hydrometallurgically from two different nickel mattes The invention relates to a method for recovering nickel in one and the same process from two pyrometallurgically produced nickel mattes, one of which contains a remarkable percentage or iron. The leaching of iron-bearing nickel matte is carried out in one... | 03/21/2000 |
| 5972073 | Recovery of the components of group III-V material aqueous wastes The present invention is directed to a method for separating the group III element component of a group III-V material from an aqueous waste containing a group III-V material to allow for their recovery and beneficial use. The method includes adjusting th... | 10/26/1999 |
| 5917116 | Method for the processing of copper minerals A method of processing a copper mineral, the method comprising activating the copper mineral by milling the copper mineral to P80 of between 2 and 20 micron, and subsequently subjecting the activated copper mineral to an oxidative hydrometallurgical treat... | 06/29/1999 |
| 5709731 | Slurry pipeline leaching method A method for concurrently transporting and leaching metal values from an ore or concentrate containing said metal values from an originating site such as an elevated site to a delivery site comprising the steps of crushing and/or grinding the ore or conce... | 01/20/1998 |
| 5578245 | Method of preparing a stable colloid of submicron particles The invention provides submicron particles. The invention further provides submicron particles which are dispersed in an aqueous colloid. The invention further provides a method of forming the stable dispersion which includes providing an ion exchange res... | 11/26/1996 |
| 5462670 | Process for removing oils and greases from aqueous solution A process for removing dissolved oils and greases from an aqueous solution which also may contain dissolved heavy metals is provided wherein the aqueous solution is mixed with a source of ferrous ion and dithionite ion in a first step at acidic pH to redu... | 10/31/1995 |
| 5454856 | Recovery of nickel in soluble form from a liquor A process for recovering nickel that is in soluble form and in relatively low concentrations, typically up to 2% by weight in a liquor, comprises: (a) precipitating nickel from solution (preferably as a hydroxide or sulphide); (b) adding an inert particul... | 10/03/1995 |
| 5431713 | Method for the reclamation of metallic compounds from zinc and lead containing dust A method for the reclamation of zinc, lead, tin, cadmium and copper from dust containing such elements or compounds which involves leaching the dust with sulfuric acid or ammonium bisulfate, neutralization the leachate with zinc oxide or zinc hydroxide, a... | 07/11/1995 |
| 5427605 | Methods for purifying aqueous phases in hydrometallurgical extractions A method in which a contaminated aqueous solution produced as a result of a hydrometallurgical extraction operation is passed through a filtering bed comprising a plurality of elements, optionally of differing sizes and shapes, formed from materials inclu... | 06/27/1995 |
| 5407463 | Recovery of Cd and Ni from batteries Method for recovering cadmium (Cd), nickel (Ni) and iron (Fe) from batteries containing the steps of: (a) reducing the size of the batteries to small pieces and separating the pieces into a coarse fraction and a fine fraction with the coarse fraction furt... | 04/18/1995 |
| 5389262 | Process for removing heavy metals from solutions with ferrous dithionite and hydroxide Heavy metal ions react with ferrous dithionite in acidic aqueous solution. They are reduced to metallic particles that are suitable for recycling and reuse when recovered from the acidic water. Chelating agents that are present are deactivated by bonding ... | 02/14/1995 |
