| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 205351000 | Treating electrolyte or bath without removal from cell other than agitating, moving, regenerating, replenishing, or replacing consumed material during synthesis | 27 |
| 20080264799 | Use of Nonionic Surfactants in Extractive Metallurgy by Electrolysis - A process for the electrolytic treatment of metal-containing solutions, wherein at least one nonionic surfactant is used in the electrolyte solution, the surfactant reducing the surface tension of the electrolyte solution at a surfactant concentration of 0.2% by weight and a temperature of 24° C. in an aqueous solution with 190 g/l of sulfuric acid and 157 g/l of copper sulfate, which is diluted with water in a ratio of 1:10, by from 20 to 60%, is useful for working up ores or the purification of metals, like copper, chromium, nickel, zinc, gold and silver. | 10-30-2008 |
| 20090321272 | Sulfuric acid electrolysis process - Sulfuric acid electrolysis process wherein;
| 12-31-2009 |
| 20100116681 | Electrolytic Cell - An electrolytic cell comprising an electrolysis vessel for receiving a liquid electrolyte that fills the vessel to a predetermined level, electrodes for passing an electric current through the electrolyte, a vent for allowing gases produced by the electrolytic process to leave the vessel and an air inlet means located substantially adjacent to the predetermined level for directing air into the vessel at a predetermined rate. | 05-13-2010 |
| 20100155258 | Low Energy Electrochemical Hydroxide System and Method - A low-energy method and system of forming hydroxide ions in an electrochemical cell. On applying a low voltage across the anode and cathode, hydroxide ions form in the electrolyte containing the cathode, protons form at the anode but a gas e.g. chlorine or oxygen does not form at the anode. | 06-24-2010 |
| 20100193369 | ENHANCEMENT OF ALUMINUM TAPPING BY APPLICATION OF TARGETED ELECTROMAGNETIC FIELD - Systems, methods and apparatus for facilitating removal of molten metal from an electrolysis cell are provided. In one embodiment, a system includes a container and an electrical source coupled to the container. The electrical source may be configured to provide complementary current to a spout of the container. This complementary current may create a complementary electromagnetic field at least proximal a tip portion of the spout. When the spout of the container receives the complementary current, and when the spout is in liquid communication with the molten liquid of the electrolysis cell, the complementary electromagnetic field of the complementary current may at least partially assist to increase the flow of molten metal into the spout of the container. | 08-05-2010 |
| 20100200419 | LOW-VOLTAGE ALKALINE PRODUCTION FROM BRINES - An alkaline production system comprising an electrochemistry unit comprising a hydrogen-oxidizing anode in communication with a cathode electrolyte; wherein the electrochemistry unit is operably connected to a carbon sequestration system configured to sequester carbon dioxide with the cathode electrolyte. In another embodiment, an electrochemistry unit comprising a hydrogen-oxidizing anode in communication with a cathode electrolyte; and a carbon sequestration system configured to sequester carbon dioxide with the cathode electrolyte; and methods thereof. | 08-12-2010 |
| 20100224503 | LOW-ENERGY ELECTROCHEMICAL HYDROXIDE SYSTEM AND METHOD - A low-energy method and system of forming hydroxide ions in an electrochemical cell. On applying a low voltage across the anode and cathode, hydroxide ions form in the electrolyte containing the cathode, protons form at the anode but a gas e.g. chlorine or oxygen does not form at the anode. | 09-09-2010 |
| 20100230294 | METHOD TO REMOVE ANTIMONY FROM COPPER ELECTROLYTES - A method and solution for eluting one of antimony(V) and a mixture of antimony(III) and antimony(V) from an ion exchange resin, comprises contacting the resin with an eluting solution comprising thiourea having a concentration of at least 0.002 M and hydrochloric acid having a concentration of at least 3 M. The method can be used for electrolytes in an industrial electrorefining process, by the further steps of contacting the electrolyte with an ion exchange resin to adsorb the antimony from the electrolyte and separating the resin from the electrolyte, before contacting the resin with the eluting solution comprising thiourea and hydrochloric acid. The method and solution address the difficulties of removing antimony(V), and allow for increased reuse of the resins. | 09-16-2010 |
| 20110100833 | METHOD FOR PRODUCING CHLORINE DIOXIDE WITH SINGLE-LIQUID ELECTROLYSIS - A method for producing chlorine dioxide with single-liquid electrolysis, wherein chlorine dioxide is generated by performing electrolysis by supplying a direct current to an electrolyte solution in a separating-membraneless electrolytic cell having a cathode and an anode, the method includes: (a) a step of generating chlorine dioxide by performing electrolysis by supplying the direct current to the electrolyte solution, which contains an alkali chloride, an alkali chlorite and a pH adjusting agent, wherein a pH of the electrolyte solution is 4 to 8; (b) a step of supplying a replenishing electrolyte solution, containing the alkali chloride, the alkali chlorite, and the pH adjusting agent, to the electrolytic cell during the electrolysis; and (c) a step of taking out the generated chlorine dioxide from the electrolyte solution. | 05-05-2011 |
| 20110114501 | PURIFICATION OF CARBON DIOXIDE FROM A MIXTURE OF GASES - A method for purification of carbon dioxide from a mixture of gases is disclosed. The method generally includes steps (A) and (B). Step (A) may bubble the gases into a solution of an electrolyte and a catalyst in an electrochemical cell. The electrochemical cell may include an anode in a first cell compartment and a cathode in a second cell compartment. The cathode generally reduces the carbon dioxide into one or more compounds. The anode may oxidize at least one of the compounds into the carbon dioxide. Step (B) may separate the carbon dioxide from the solution. | 05-19-2011 |
| 20110253549 | WASHING APPARATUS AND METHOD OF DEODORIZING WASHING WATER - A washing apparatus and a method of deodorizing washing water that can prevent the unpleasant smell of washing water are provided. | 10-20-2011 |
| 20110272291 | METHODS FOR THE ELECTROLYTIC PRODUCTION OF ERYTHRITOL - Methods for the production of erythrose and/or erythritol are provided herein. Preferably, the method of producing erythritol includes the step of electrolytic decarboxylation of a ribonic acid or arabinonic acid reactant to produce erythrose and the step of electrolytic reduction or erythrose to produce erythritol. Optionally, the reactant can be obtained from a suitable hexose sugar, such as allose, altrose, glucose, fructose or mannose. | 11-10-2011 |
| 20120085657 | CHEMICAL SYSTEMS AND METHODS FOR OPERATING AN ELECTROCHEMICAL CELL WITH AN ACIDIC ANOLYTE - An electrochemical cell having a cation-conductive ceramic membrane and an acidic anolyte. Generally, the cell includes an anolyte compartment and a catholyte compartment that are separated by a cation-conductive membrane. A diffusion barrier is disposed in the anolyte compartment between the membrane and an anode. In some cases, a catholyte is channeled into a space between the barrier and the membrane. In other cases, a chemical that maintains an acceptably high pH adjacent the membrane is channeled between the barrier and the membrane. In still other cases, some of the catholyte is channeled between the barrier and the membrane while another portion of the catholyte is channeled between the barrier and the anode. In each case, the barrier and the chemicals channeled between the barrier and the membrane help maintain the pH of the liquid contacting the anolyte side of the membrane at an acceptably high level. | 04-12-2012 |
| 20120234690 | DEVICE DESIGNED FOR COLLECTING SOLID DEBRIS IN AN ELECTROLYSIS CELL FOR THE PRODUCTION OF ALUMINIUM - Bucket shovel type collection unit, used in an aluminum production cell, comprising:
| 09-20-2012 |
| 20120279870 | METHOD FOR ELECTROCHEMICAL OXYGEN REDUCTION IN ALKALINE MEDIA - The invention relates to a method for electrochemical reduction of oxygen in alkaline media, a catalyst comprising nitrogen-doped carbon nanotubes (NCNTs) having nanoparticles located on their surface being used. | 11-08-2012 |
| 20120292196 | Electrochemical Hydroxide Systems and Methods Using Metal Oxidation - There are provided methods and systems for an electrochemical cell including an anode and a cathode where the anode is contacted with a metal ion that converts the metal ion from a lower oxidation state to a higher oxidation state. The metal ion in the higher oxidation state is reacted with hydrogen gas, an unsaturated hydrocarbon, and/or a saturated hydrocarbon to form products. | 11-22-2012 |
| 20120292197 | ELECTROCHEMICAL HYDROXIDE SYSTEMS AND METHODS USING METAL OXIDATION - There are provided methods and systems for an electrochemical cell including an anode and a cathode where the anode is contacted with a metal ion that converts the metal ion from a lower oxidation state to a higher oxidation state. The metal ion in the higher oxidation state is reacted with hydrogen gas, an unsaturated hydrocarbon, and/or a saturated hydrocarbon to form products. | 11-22-2012 |
| 20130180864 | ELECTROLYTIC METHOD FOR FABRICATING TRANSPARENT CONDUCTIVE MULTI-COMPONENT METAL OXIDE POWDERS - An improved electrolytic method for fabricating transparent conductive multi-component metal oxide powders is disclosed. By adjusting pH-value, the metal compositions that a transparent conductive oxide film requires are electrolyzed to form individual metal ion precursory solutions under the condition not to precipitate the solution. Then, the individual metal ion precursory solutions with the required composition ratio are mixed and the precipitate reaction is performed. Finally, transparent conductive multi-component oxide powders with the controlled composition ratio and composition homogeneity are obtained by calcining the washed, filtered, and dried co-precipitates. | 07-18-2013 |
| 20130199937 | Reducing Carbon Dioxide to Products - A method reducing carbon dioxide to one or more products may include steps (A) to (C). Step (A) may bubble said carbon dioxide into a solution of an electrolyte and a catalyst in a divided electrochemical cell. The divided electrochemical cell may include an anode in a first cell compartment and a cathode in a second cell compartment. The cathode may reduce said carbon dioxide into said products. Step (B) may adjust one or more of (a) a cathode material, (b) a surface morphology of said cathode, (c) said electrolyte, (d) a manner in which said carbon dioxide is bubbled, (e), a pH level of said solution, and (f) an electrical potential of said divided electrochemical cell, to vary at least one of (i) which of said products is produced and (ii) a faradaic yield of said products. Step (C) may separate said products from said solution. | 08-08-2013 |
| 20130206606 | ELECTROCHEMICAL HYDROXIDE SYSTEMS AND METHODS USING METAL OXIDATION - There are provided methods and systems for an electrochemical cell including an anode and a cathode where the anode is contacted with a metal ion that converts the metal ion from a lower oxidation state to a higher oxidation state. The metal ion in the higher oxidation state is reacted with hydrogen gas, an unsaturated hydrocarbon, and/or a saturated hydrocarbon to form products. | 08-15-2013 |
| 20140097094 | RECOVERY METHOD OF NICKEL FROM SPENT ELECTROLESS NICKEL PLATING SOLUTIONS BY ELECTROLYSIS - A recovery method of nickel according to the present invention comprises pretreatment step to prepare a solution for electrolysis by adding hexanesulfonate salt to a treatment solution including nickel, and nickel recovery step to recover nickel in a metal form by electrolysis of the above solution for electrolysis. The present invention can produce nickel in high purity with simple process with low cost, and can recover and reproduce nickel in a metal form with at least 99.5% of high purity and at least 90% of recovery rate. | 04-10-2014 |
| 20140110268 | ELECTROCATALYTIC HYDROGENATION AND HYDRODEOXYGENATION OF OXYGENATED AND UNSATURATED ORGANIC COMPOUNDS - A process and related electrode composition are disclosed for the electrocatalytic hydrogenation and/or hydrodeoxygenation of organic substrates such as biomass-derived bio-oil components by the production of hydrogen atoms on a catalyst surface followed by the reaction of the hydrogen atoms with the organic reactants. Biomass fast pyrolysis-derived bio-oil is a liquid mixture containing hundreds of organic compounds with chemical functionalities that are corrosive to container materials and are prone to polymerization. A high surface area skeletal metal catalyst material such as Raney Nickel can be used as the cathode. Electrocatalytic hydrogenation and/or hydrodeoxygenation convert the organic substrates under mild conditions to reduce coke formation and catalyst deactivation. The process converts oxygen-containing functionalities and unsaturated bonds into chemically reduced forms with an increased hydrogen content. The process is operated at mild conditions, which enables it to be a good means for stabilizing bio-oil to a form that can be stored and transported using metal containers and pipes. | 04-24-2014 |
| 20140251820 | METHOD OF RECOVERING A METAL FROM A SOLUTION - A method for recovering a metal from either an acidic or a basic solution using an aluminum cementation process is disclosed. The method involves adding an aluminum-containing powder to a tellurium-containing solution to precipitate tellurium from the tellurium-containing solution and then removing the precipitated tellurium therefrom. | 09-11-2014 |
| 20140374271 | REFERENCE ELECTRODE HAVING A FLOWING LIQUID JUNCTION AND FILTER MEMBERS - A flowing junction reference electrode comprising a liquid junction member matched with a filter. The junction member and the filter are situated between a reference electrolyte solution and a sample solution. An array of nanochannels spans the junction member and provides fluid communication between the electrolyte solution and the sample solution. The filter is configured to allow a greater flux of electrolyte than that associated with the junction member. Preferably, the number of pores is greater than the number of nanochannels. The filter is preferably configured to have pores with an inner diameter that is the same or less than the inner diameter of the nanochannels. In some embodiment, the resistance of the filter is made lower relative to the resistance of the junction member by selecting suitable length, number, and inner diameter size for the pores of the filter relative to the nanochannels of the junction member. | 12-25-2014 |
| 20160083858 | ELECTROCHEMICAL FLOW-CELL FOR HYDROGEN PRODUCTION AND NICOTINAMIDE DEPENDENT TARGET REDUCTION, AND RELATED METHODS AND SYSTEMS - Methods and systems for hydrogen production or production of a reduced target molecule are described, wherein a nicotinamide co-factor dependent membrane hydrogenase or a nicotinamide co-factor dependent membrane enzyme presented on a nanolipoprotein adsorbed onto an electrically conductive supporting structure, which can preferably be chemically inert, is contacted with protons or a target molecule to be reduced and nicotinamide cofactors in presence of an electric current and one or more electrically driven redox mediators. Methods and systems for production of hydrogen or a reduced target molecule are also described wherein a membrane-bound hydrogenase enzyme or enzyme capable or reducing a target molecule is contacted with protons or the target molecule, a nicotinamide co-factor and a nicotinamide co-factor dependent membrane hydrogenase presented on a nanolipoprotein particle for a time and under condition to allow hydrogen production or production of a reduced target molecule in presence of an electrical current and of an electrically driven redox mediator. | 03-24-2016 |
| 20160194769 | METHOD OF PREVENTING REVERSE CURRENT FLOW THROUGH AN ION EXCHANGE MEMBRANE ELECTROLYZER | 07-07-2016 |
| 20160201203 | CHLORINE DIOXIDE PRODUCTION DEVICE AND CHLORINE DIOXIDE PRODUCTION METHOD | 07-14-2016 |
