Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7435325 | Method for producing high purity nickle, high purity nickle, sputtering target comprising the high purity nickel, and thin film formed by using said spattering target Upon performing electrolysis with a solution containing nickel as the electrolytic solution, anolyte is adjusted to pH 2 to 5; impurities such as iron, cobalt and copper contained in the anolyte are eliminated by combining any one or two or more of the methods among... | 10/14/2008 |
| 5720867 | Process for the electrochemical recovery of the metals copper, zinc, lead, nickel or cobalt An electrolytic cell comprising bipolar electrodes is employed for electrochemical deposition of copper, zinc, lead, nickel or cobalt. An interior space is provided between the cathode side and the anode side of a bipolar electrode. The electrolyte can fl... | 02/24/1998 |
| 5254225 | Recovery of metallic compounds from geothermal brine A geothermal brine containing recoverable metals is contacted with at least two electrodes, across which an electrical potential is applied to cause the metals to deposit upon said electrodes. The invention is particularly useful for the recovery of iron,... | 10/19/1993 |
| 5078842 | Process for removing radioactive burden from spent nuclear reactor decontamination solutions using electrochemical ion exchange Spent nuclear reactor coolant system decontamination solutions are processed to remove the radioactive burden and to separate metallic impurities using ion exchange resins within an electrochemical cell. The application of electric current to the electroc... | 01/07/1992 |
| 5019224 | Electrolytic process An electrolytic process in which an aqueous electrolyte is electrolysed in an electrolytic cell which comprises at least one anode and at least one cathode, in which oxygen is evolved at the anode, and which is operated at an anode current density of at l... | 05/28/1991 |
| 4789444 | Process for electrolytically producing metals of Ni, Co, Zn, Cu, Mn, and Cr from a solution thereof Process for electrolytically producing metals of Ni, Co, Zn, Cu, Mn, and Cr, comprising, electrolyzing an aqueous solution containing ions of a metal as main component selected from Ni, Co, Zn, Cu, Mn, and Cr in a cathode compartment to deposit the metal ... | 12/06/1988 |
| 4604173 | Low oxygen overvoltage lead anodes Anodes made of lead or lead alloys, used for the evolution of oxygen from sulphuric acid solutions, particularly in metal electrowinning processes, are made more catalytic by treating them in an oxidizing bath of hydrated molten salts, in particular compr... | 08/05/1986 |
| 4454013 | Method of separating iron and its alloy metals from fine-grained crude oxidic products Pure ferro-alloy metals are isolated from fine-grained crude oxidic mineral products by reduction melting and subsequent anodic liberation of the iron. The reduction melting is performed in a plasma-heated furnace into which the fine-grained oxide materia... | 06/12/1984 |
| 4416743 | Electrolysis using two electrolytically conducting phases An electrolysis system and method are disclosed having at least two electrolyte phases, one of which is aqueous and another of which is aqueous-immiscible wherein the inter-facial current passage is ionic rather than electronic. Electrode contact with suc... | 11/22/1983 |
| 4363706 | Anode A titanium-nickel alloy containing 51 to 55.4% nickel with the addition of optional quantities of niobium intended for use as an anode in the electrowinning of metal, particularly cobalt, an electrolytic cell incorporating such an anode and a method of op... | 12/14/1982 |
| 4279711 | Aqueous electrowinning of metals An improved process for aqueous electrowinning of metals, using methanol (or another soluble fuel) added to the electrolyte, a catalytically active platinum mesh or platinum-plated titanium anode and periodic current reversal, in order to maintain a low a... | 07/21/1981 |
| 4274930 | Process for recovering cobalt electrolytically A cobaltic oxide hydrate is mixed with spent sulfate electrolyte and the slurry is sparged with air to liberate any entrained chloride ions as gaseous chlorine. Thereafter a reducing agent is used to enable dissolution of the cobalt and obtaining of a chl... | 06/23/1981 |
| 4272339 | Process for electrowinning of metals An electrowinning process for the recovery of various metals including copper, zinc and nickel from an aqueous electrolyte in an electrolytic cell containing anodes and cathodes is disclosed wherein the anodes are formed from a lead alloy containing from ... | 06/09/1981 |
| 4189358 | Electrodeposition of ruthenium-iridium alloy Ruthenium-iridium electrodeposits are prepared from aqueous acid solution containing ruthenium, iridium, a fluoborate salt, fluoboric acid, and optionally sulfamic acid. The baths are especially useful for preparing insoluble anodes.... | 02/19/1980 |
| 4157943 | Composite electrode for electrolytic processes A composite electrode especially suitable for electrowinning processes comprising an electrically conductive substrate having on at least a part of its surface a multilayer coating, said coating comprising: (a) a barrier layer directly on the substrate; (b) a ... | 06/12/1979 |
| 4139430 | Process of electrodeposition and product utilizing a reusable integrated cathode unit A reusable integrated cathode unit and an associated electrolytic method are disclosed for the simultaneous production of a multiplicity of metal electrodeposits by plating from a base metal electrolyte. The rigid cathode unit has two integrated component... | 02/13/1979 |
| 4134806 | Metal anodes with reduced anodic surface and high current density and their use in electrowinning processes with low cathodic current density Describes an electrochemical process operated at relatively low cathodic current density and high anodic current density, particularly for electrowinning and electrorefining processes using dimensionally stable metal anodes with reduced anodic electrocata... | 01/16/1979 |
| 4111765 | Silicon carbide-valve metal borides-carbon electrodes Novel sintered electrodes consisting essentially of 40 to 90% by weight of at least one valve metal boride, 5 to 40% by weight of silicon carbide and 5 to 40% by weight of carbon useful for electrolysis reactions, particularly electrolysis of halide ions ... | 09/05/1978 |
| 4087339 | Electrowinning of sulfur-containing nickel Sulfur-containing nickel is electrodeposited from a chloride electrolyte in a cell wherein each cathode is separated from any adjacent anode by a pair of diaphragms.... | 05/02/1978 |
| 4075069 | Processes for preventing the generation of a mist of electrolyte and for recovering generated gases in electrowinning metal recovery, and electrodes for use in said processes The present invention provides a process for preventing the generation of a mist of electrolyte in the electrowinning metal recovery which is carried out by using an aqueous solution of a metal salt as an electrolyte and an insoluble electrode, said proce... | 02/21/1978 |
| 4073707 | Method of operating a circulating bed cell The invention discloses a method of controlling the size distribution of electroconductive particles constituting a particulate electrode in an electrochemical cell. Particles are extracted from the particulate electrode and are subjected to elutriation, ... | 02/14/1978 |
| 4072586 | Manganese dioxide electrodes Novel electrodes consisting essentially of a valve metal base or other electrically conductive material which is corrosion-resistant to the anodic conditions having on at least a portion of its outer surface an electrocatalytic coating of ଲ-manganes... | 02/07/1978 |
| 4064022 | Method of recovering metals from sludges A sludge containing a sparingly soluble metal compound such as nickel carbonate or the like is supplied to an anode compartment or an intermediate compartment of an electrolytic cell provided with an anode compartment and a cathode compartment or with an ... | 12/20/1977 |
| 4056449 | Electrowinning method In the method of electrowinning metals from acid aqueous solutions of the metals, the improvement comprising maintaining the anode surface at a temperature not greater than 40° C to avoid deposits of manganese cobalt and iron dioxides and to improve anod... | 11/01/1977 |
| 4051000 | Non-contaminating anode suitable for electrowinning applications A non-contaminating electrode is provided suitable as an insoluble anode for the electrowinning of metals from an electrolyte solution, said electrode comprising a metal substrate formed of a metal selected from the group consisting of titanium, zirconium... | 09/27/1977 |
| 4039403 | Electrowinning metals A method of electrowinning metals in which the anode comprises a foraminate container containing particulate material chosen from the group electrically conducting non-polarizing compound of a metal and a non-metallic element.... | 08/02/1977 |
| 4028199 | Method of producing metal powder A metal powder e.g. copper or zinc, is produced from a dilute aqueous solution of the metal by subjecting the dilute aqueous solution to electrolysis in a cell having a rotating cylinder cathode and in accordance with the equation: where I is the current ... | 06/07/1977 |
| 3957600 | Method of and anodes for use in electrowinning metals Anodes of alloys, which may be fragmented and used in baskets, of passive film-forming metals and elements having atomic numbers 23-29 for use in electrowinning metals, methods of using such anodes, and electrowinning cells incorporating such anodes.... | 05/18/1976 |
| 3956087 | Electrochemical mining of copper A method is described for the direct extraction of copper as finely divided metal from subterranean sulfide ore deposits containing the same utilizing electrochemical techniques. The method eliminates the physical digging and crushing of ore and greatly r... | 05/11/1976 |
| 3953306 | Metal recovery from waste treatment sludges An improved process for preparing highly concentrated salt solutions of metals of high purity from waste metal sludges at superior dissolution rates is achieved by preparing, concentrating and washing the sludge containing insoluble metal hydroxide under ... | 04/27/1976 |
