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| Number | Title | Issue Date |
| 7151313 | Method of forming wirings for tile-shaped elements, structures of wirings for tile-shaped elements, and electronic equipment Methods are provided to form wirings for tile-shaped elements, structures of wirings for tile-shaped elements, and electronic equipment, with which highly reliable electrical wirings having minute wiring patterns can be formed. In wiring forming method for a tile-sh... | 12/19/2006 |
| 6797033 | Method for recovering catalytic metals A method for recovering catalytic metals from fluids containing catalytic metal colloids. Fluid compositions such as rinse solutions or dragout baths containing catalytic metal colloids are passed through a filter that entraps catalytic metal colloids on the filter.... | 09/28/2004 |
| 6773485 | Method for recovering catalytic metals using a porous metal filter A method for recovering catalytic metals from fluid compositions containing catalytic metal colloids. Fluid compositions such as aqueous rinse solutions or dragout baths containing catalytic metal colloids are passed through a porous metal filter that entraps the ca... | 08/10/2004 |
| 6723179 | Soft magnetism alloy powder, treating method thereof, soft magnetism alloy formed body, and production method thereof A soft magnetism metal powder having a majority of particles, each of which, when cross-sectioned, has no greater than ten crystal particles on average, may be coated on an outer surface of each of the particles with a resistive material having a higher resistivity ... | 04/20/2004 |
| 6602319 | Process for the recovery of gold and silver from used refractory bricks The present invention relates to a process for the recovery of gold and silver from the used refractory bricks of Dore furnace. This invention particularly relates to a process for the recovery of gold and silver from the used refractory bricks generated ... | 08/05/2003 |
| 6555010 | Solution mining process for removing metals from aqueous solution A process is disclosed for obtaining colloid-forming metal particles from an aqueous mine waste solution containing that metal in ionic form. In accordance with this process, an aqueous mine waste solution containing that metal in ionic form is provided h... | 04/29/2003 |
| 5769925 | Process for the elution of precious metals absorbed on active carbon A powerful reducing agent such as hydrazine monohydrate is added to the standard eluent solutions such as NsOH-NaCN with or without alcohol. The kinetics of elution of gold or of silver are thus markedly enhanced.... | 06/23/1998 |
| 5536294 | Process for extracting precious metals from volcanic ore A process for extracting precious metal from volcanic ore includes the steps of crushing the ore, heating the ore in a hydrogen atmosphere to soften oxide mineral encapsulating the precious metal, cooling the ore, grinding the ore, and processing the ore ... | 07/16/1996 |
| 5205858 | Precious metals recovery process Standard cyanide-extraction techniques are coupled with carbon adsorption to facilitate the recovery of precious metals. The carbon is in the minus eighty mesh size range and is removed from a slurry by flotation. The loaded carbon is then dried and destr... | 04/27/1993 |
| 5178665 | Recovery of dissolved gold by sodium borohydride (NaBH4) reduction A process is disclosed for the direct recovery of gold from cyanide leach liquor, thiourea leach liquor or Bio-D leach liquor. The process comprises reduction precipitation of the gold from solution by the addition of stabilized alkali metal borohydride, ... | 01/12/1993 |
| 4936910 | Process for the recovery of gold Process for recovering gold from a leachate containing AuBr4-- comprising contacting the leachate with a quantity of sphagnum peat moss under conditions effective to concentrate the gold on the moss, and thereafter recovering the gol... | 06/26/1990 |
| 4857107 | Gold inquartation process A method of refining a precious metal comprising the steps of inquarting the material containing the precious metal into an alloy, with a known quantity of a base metal to form an alloy of a known concentration of the precious metal, and dissolving the ba... | 08/15/1989 |
| 4585548 | Recovery of metal values from mineral ores by incorporation in coal-oil agglomerates Gold ore, or any other mineral treated to have a lyophilic surface, (e.g. chalcopyrites), is ground into a slurry in crusher (1) powdered coal and oil are added at location (2), and the mix is conveyed to a contact zone (3), where any micro-agglomerates f... | 04/29/1986 |
| 4561887 | Process for recovering metals from solution through solvent extraction and pyrometallurgical reduction Solvent extraction is used for selective recovery of a dissolved metal such as copper from an aqueous solution of metals by means of an organic liquid, immiscible with the aqueous solution and selective for the metal of interest. The metal is extracted fr... | 12/31/1985 |
| 4537628 | Recovery of precious metals The extent of recovery of precious metals, preferably gold and silver, from precious metal ores, concentrates, tailings and wastes which are also sulphide- and arsenic- and/or antimony-bearing, is enhanced by treatment with Caro's acid (H2 SO | 08/27/1985 |
| 4368073 | Use of the sodium salt of 2-mercaptopyridine-N-oxide to separate gold from acidic solutions Disclosed is a process for separating gold from acidic solutions having a pH below about 3 which comprises the steps of: (a) adding a sufficient amount of the sodium salt of 2-mercaptopyridine-N-oxide to cause at least a portion of the gold in the aqueous... | 01/11/1983 |
| 4360380 | Process for recovery of metal values from sludges A process for the recovery of selected metal values from silica containing sludges including incineration of the sludge to degrade organic components, followed by acid leaching of the ash, followed by hydrometallurgical recovery of metal values from the r... | 11/23/1982 |
| 4138248 | Recovery of elemental sulfur and metal values from tailings from copper recovery processes A process for the recovery of copper, molybdenum, gold and elemental sulfur in tailings from hydrometallurgical processing of copper sulfide ores, the process comprising concentrating the tailings containing elemental sulfur and copper, gold and molybdenu... | 02/06/1979 |
| 3979205 | Metal recovery method The present invention is a method of treating sea or land carbonaceous ore or reconstituted, formerly carbonaceous ore to recover therefrom noble metal values. If sea ore is used, noble metal containing composite organic material is first separated from a... | 09/07/1976 |
| 3961941 | Method of producing metallic lead and silver from their sulfides A process for producing metallic lead and silver from materials such as ores and concentrates containing the corresponding sulfides and particularly a mixture of minerals such as galena and tetrahedrite in which process the minerals are initially roasted ... | 06/08/1976 |
| 3958985 | Extraction method for non-ferrous metals Non-ferrous metals are recovered from metal bearing ores or other metal sources in substantially quantitative yields by treating a finely divided metal bearing material with an aqueous inorganic acid to form a slurry and baking the slurry at atmospheric p... | 05/25/1976 |
