Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 8114189 | Method for treating iron in a silver recovery process A method of reducing or preventing the amount of iron sludge or precipitate that forms as a result of the recovery of silver from chemical solutions, such as a standard photographic solution. The method generally involves the introduction of a source of a conjugate ... | 02/14/2012 |
| 7341977 | Method of sorbing sulfur compounds using nanocrystalline mesoporous metal oxides Compounds and methods for sorbing organosulfur compounds from fluids are provided. Generally, compounds according to the present invention comprise mesoporous, nanocrystalline metal oxides. Preferred metal oxide compounds either exhibit soft Lewis acid properties or... | 03/11/2008 |
| 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 |
| 7066983 | Method for thiosulfate leaching of precious metal-containing materials Processes are provided for recovering precious metals from refractory materials using thiosulfate lixiviants. The processes can employ lixiviants that include at most only small amounts of copper and/or ammonia and operate at a relatively low pH, reduction of polyth... | 06/27/2006 |
| 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 |
| 6991669 | System and method for silver recovery and monitoring A silver recovery and monitoring system including a sensor for transmitting a silver concentration signal in response to the concentration of silver in a fluid, means for determining whether the silver concentration signal indicates the concentration of silver in th... | 01/31/2006 |
| 6780221 | Waste metal removal systems and methods A removal system for removing a waste metal from a waste solution. The removal system comprises outer and inner containers, inlet, intermediate, and outlet conduits, and first and second reaction media. The inner container defines an upper wall portion and is locate... | 08/24/2004 |
| 6558449 | Waste metal removal systems and methods A removal system for removing a waste metal from a waste solution. The removal system comprises outer and inner containers and inlet, intermediate, and outlet conduits. The outer container defines an outer chamber, and the inner container defines an inner... | 05/06/2003 |
| 6395242 | Production of zinc oxide from complex sulfide concentrates using chloride processing The present invention relates to an apparatus and a process for producing zinc oxide from a zinc-bearing material. The process according to the present invention comprises the steps of leaching the complex sulfide material with hydrochloric acid and oxyge... | 05/28/2002 |
| 5993668 | Method for removing metal ions and/or complexes containing metal ions from a solution Metal ions and/or complexes of metal ions are removed from a solution by formation of an insoluble chelated complex of the metal ions and a polymeric precipitating agent. A two-step process of mixing the influent with the precipitating agent is used to in... | 11/30/1999 |
| 5900041 | Value metal recovery Value metal, for example, silver in a spent silver bearing photographic solution is efficiently recovered in an exchange mass comprising a particulate inert substrate, for example, cellulosic fibers, synthetic fibers or sponge particles, co-mingled and in... | 05/04/1999 |
| 5827348 | Leaching of precious metal ore with fluoroaliphatic surfactant A method for improving the recovery of gold and silver from precious metal ore is disclosed. The method comprises contacting precious metal ore with an aqueous solution containing certain fluoroaliphatic surfactants.... | 10/27/1998 |
| 5474593 | Agent for treating metal ions in an aqueous solution, process for producing the metal ion-treating agent and method for treating metal ions in an aqueous solution An agent for treating metal ions in an aqueous solution, comprising a solid porous carrier and, supported thereon, an organic reagent (hereinafter referred to as a "redox reagent") which is capable of converting metal ions (inclusive of metal complex ions... | 12/12/1995 |
| 5458024 | Apparatus and method for recovery of silver An improved apparatus and method for recovering metallic silver from solutions containing silver ions by reducing silver ions and oxidizing an element in the electromotive series above silver, such as iron. The apparatus provides plug flow of solution int... | 10/17/1995 |
| 5409614 | Control of scale deposition in geothermal operations NORMs are inhibited or prevented from precipitating with scale produced by a hot aqueous solution by adding multiple portions of a crystal structure modifier to the aqueous solution as it cools before and during removal of silicon containing components by... | 04/25/1995 |
| 5298170 | Effluent neutralization process and chamber An effluent precipitation and neutralization chamber for mixing and neutralizing spent photographic developer and fixer. The fixer inlet discharging into a vertically oriented conduit located within the vessel, which contains iron therein and defines a gr... | 03/29/1994 |
| 5288411 | Control of scale deposition in geothermal operations Radioactivity and fluoride ion are inhibited or prevented from precipitating in scale formed from a geothermal brine by adding a scale inhibitor to the cooling brine solution. Preferred scale inhibitors include polyacrylate dispersants and phosphonomethyl... | 02/22/1994 |
| 5244491 | Method of extracting zinc lead and silver from brines The present invention provides a novel method of extracting zinc from geothermal brines and synthetic brines which can be performed in a continuous, in-line process.... | 09/14/1993 |
| 5232490 | Oxidation/reduction process for recovery of precious metals from MnO2 ores, sulfidic ores and carbonaceous materials A process for separating precious metals from an MnO2, sulfidic or carbonaceous refractory ore or refractory feed such as tailings is provided. The process includes the step of leaching a feed with a leach liquor that includes an acid selected ... | 08/03/1993 |
| 5229009 | Effluent precipitation and neutralization chamber An effluent precipitation and neutralization chamber for mixing and neutralizing spent photographic developer and fixer. A baffle and long folded ribbons inside the chamber promote mixing of the developer and fixer. A source of iron ions such as fine stee... | 07/20/1993 |
| 5173247 | Silver recovery device Recovery apparatus to remove silver from solution including use of plastic chips such as are commonly used as packing materials to support scrap metal parts such as washer hole stampings in the flow path in a container between the inlet and outlet of the ... | 12/22/1992 |
| 5145515 | Treatment of brine A method is disclosed for polishing geothermal brines containing iron-rich silica scale and silica particles suspended therein while removing and recovering copper, silver and other precious metals dissolved therein. The method comprises passing brine hav... | 09/08/1992 |
| 5145656 | Brine treatment Geothermal brine is passed through a zone containing a packing metal so as to reduce its tendency to deposit iron/silica scale, reduce corrosivity of the brine, and/or remove and recover metals from the brine. The method polished the geothermal brine by c... | 09/08/1992 |
| 5139752 | Method for extraction of gold and silver from ore with a solution containing a halogen, halogenated salt and organic solvent From an ore containing gold and silver, the gold and silver are extracted by a method which comprises pulverizing the ore and bringing the pulverized ore into contact with an elemental halogen, a halogenated salt, and an organic solvent thereby converting... | 08/18/1992 |
| 5132022 | Effluent precipitation and neutralization chamber An effluent precipitation and neutralization chamber for mixing and neutralizing spent photographic developer and fixer. A baffle and long folded ribbons inside the chamber promote mixing of the developer and fixer. A source of iron ions such as fine stee... | 07/21/1992 |
| 5114687 | Ammonia extraction of gold and silver from ores and other materials Gold and silver are extracted from their elemental state or from complex ores and alloys by leaching them with a solution containing ammonia, ammonium salts and one or more oxidants. The process is particularly effective for refractory gold ores including... | 05/19/1992 |
| 5112390 | Replaceable core silver recovery equipment and method of making and using Equipment and methods for an efficient, low cost silver recovery apparatus for recovering silver from a silver-containing solution. The apparatus comprises a replaceable silver recovery subassembly, stackable container, lid, lock ring which is locked or s... | 05/12/1992 |
| 5096678 | Method and apparatus for beneficiating ores A method and apparatus for treating mineral-bearing ores and, more particularly, for treating ores containing precious metals, base metals and the like values by providing a means to extract the metal or other values from a particulated ore by classifying... | 03/17/1992 |
| 5085836 | Process for desilvering silver halide processing fluids A method to reduce dissolved silver present in spent, waste, photographic processing fluids containing thiosulfate, is described. This process involves adjusting the pH to a low level prior to the addition of finely ground steel to the solution. With the ... | 02/04/1992 |
| 5082492 | Recovery of precious metals from aqueous media A method is disclosed for polishing geothermal brines containing iron-rich silica scale and silica particles suspended therein while removing and recovering copper, silver and other precious metals dissolved therein. The method comprises passing brine hav... | 01/21/1992 |
| 5078786 | Process for recovering metal values from jarosite solids This invention concerns a process for recovering metal values from jarosite-containing materials by leaching with a calcium chloride solution at a temperature above about the atmospheric boiling point of the solution and under at least the autogenous pres... | 01/07/1992 |
| 5026029 | Silver controller A silver controller comprising a container, a core member fitted within the container, a filler material around the core member, and a fluid deflector extending around the filler material. The container has an inlet and an outlet and a base. The inlet is ... | 06/25/1991 |
| 5004212 | Apparatus with improved flow-through characteristics for the recovery of silver from silver-containing waste fluids An improved canister for the recovery of silver from acidic, waste fluids is described. This canister comprises both inner and outer element, each removable from the other, with fitted top and bottom sections. The novel canister thus described, provides a... | 04/02/1991 |
| 4997166 | Silver recovery system A sealed, pressurized system for processing silver bearing solutions, such as photographic solutions, for the purpose of removing the silver comprises a series of interconnected sealed containers each of which contains several spaced apart reels or masses... | 03/05/1991 |
| 4992097 | Metal recovery process The invention relates to a process for the recovery of a valuable metal(s) from its ore(s), that includes a method for removal of environmentally hazardous, volatile material prior to the removal of the metal(s) from its ore pulp or liquor carrier. The pr... | 02/12/1991 |
| 4904358 | Gold and silver recovery processes by electrolytic generation of active bromine The invention comprises leaching of ore or other materials containing gold and/or silver with an electrolyzed sodium bromide solution. A quantity of electric current is passed through a volume of 5% to 50% by weight sodium bromide solution to generate a q... | 02/27/1990 |
| 4881973 | Life silver recovery system A process is described which improves the life of a silver recovery unit which employs finely divided iron and a minor amounts of a copper or cadmium salt therein by raising the pH of waste acidic photographic processing stream containing silver to be rec... | 11/21/1989 |
| 4874436 | Method for producing high purity electrolytic copper A method is provided for producing high purity electrolytic copper useful, for example, to make a copper wire for use in sound or image reproducing systems, such as audio, video and television systems, etc. The copper wire consists of high purity copper i... | 10/17/1989 |
| 4874429 | Hydrometallurgical process for the recovery of silver from copper electrolysis anode sludge Silver is recovered from an anode sludge by initially chlorinating the sludge in a slurry with nascent chlorine. The nascent chlorine is produced in situ by addition of sodium hypochlorite to the slurry in hydrochloric acid. Then the slurry is filtered an... | 10/17/1989 |
| 4842644 | Silver recovery method Methods of and apparatus for recovering silver and other metals from solutions containing compounds of those metals. The solution being treated is pumped upwardly under pressure and at a constant rate through a reaction mass or medium to promote ion excha... | 06/27/1989 |
