CHLORINE ENGINEERS CORP. LTD. Patent applications |
Patent application number | Title | Published |
20150122641 | ELASTIC CUSHION MATERIAL AND ION EXCHANGE MEMBRANE ELECTROLYTIC CELL UTILIZING SAME - Provided are an elastic cushion member and an ion exchange membrane electrolyzer using the same, which elastic cushion member can be installed even in an ion exchange membrane electrolyzer having such a small gap between an electrode and an electrode current collecting plate that a conventional elastic cushion member cannot be arranged therein. An elastic cushion member ( | 05-07-2015 |
20150114830 | CELL FOR ION EXCHANGE MEMBRANE ELECTROLYSIS - Provided is a cell for ion exchange membrane electrolysis obtained by improving the performance in electrolysis of an existing bipolar cell for ion exchange membrane electrolysis, in which a cathode partition wall and a rigid cathode being connected together by a plurality of intermediating V-shaped springs, by a simple method. It is a cell for ion exchange membrane electrolysis which is separated by an ion exchange membrane ( | 04-30-2015 |
20130334059 | APPARATUS FOR ELECTROLYZING SULFURIC ACID AND METHOD FOR ELECTROLYZING SULFURIC ACID - The present invention relates to an apparatus to produce oxidizing agent-rich sulfuric acid by electrolysis of sulfuric acid. More specifically, it relates to the apparatus by which dilute sulfuric acid of the specified temperature and concentration is formed within the electrolysis system and then, by electrolysis of the formed dilute sulfuric acid, electrolytic sulfuric acid containing richly oxidizing agent is formed at a high efficiency and safely under the temperature control. | 12-19-2013 |
20130313129 | METHOD FOR MEASURING TOTAL CONCENTRATION OF OXIDIZING AGENTS, CONCENTRATION METER FOR MEASURING TOTAL CONCENTRATION OF OXIDIZING AGENTS, AND SULFURIC ACID ELECTROLYSIS DEVICE EQUIPPED WITH SAME - Provided are: a method of measuring the total concentration of oxidizing agents, by which the total concentration can be determined in a single measurement with simple operations even in an evaluation solution containing multiple components such as persulfuric acid, perosulfate and hydrogen peroxide; a simple and inexpensive concentration meter for measuring the total concentration of oxidizing agents; and a sulfuric acid electrolysis device comprising the concentration meter. | 11-28-2013 |
20130299342 | ION EXCHANGE MEMBRANE METHOD ELECTROLYTIC CELL - An ion-exchange membrane method electrolytic cell comprising a coil cushion arranged between a conductive plate and a cathode in a cathode chamber, and further an ion-exchange membrane arranged in contact with the cathode. The conductive plate is not perforated, and the coil cushion is arranged so that its axial direction is in agreement with the vertical direction of electrolytic cell. Preferably the coil cushion is made of a metal coil and has an impact resilience of 7-17 kPa. The cathode preferably has supported electrode catalyst and is made of an expanded metal with strands of 0.1-1.0 mm width and 0.1-1.0 mm thickness, and having SW of 0.5-5.0 mm and LW of 1.0-10 mm, and 48-60% open area. The electrolytic cell is energy-saving, and damage thereof can be avoided over a long period, and elevation of voltage and reduction of current efficiency with time can be minimized. | 11-14-2013 |
20130256150 | ELECTRICALLY CONDUCTIVE DIAMOND ELECTRODE, AND SULFURIC ACID ELECTROLYSIS METHOD AND SULFURIC ACID ELECTROLYSIS APPARATUS EACH UTILIZING SAME - The present invention provides an electrically conductive diamond electrode comprising an electrically conductive substrate and an electrically conductive diamond layer coated on the surface of the electrically conductive substrate, featuring that:
| 10-03-2013 |
20120168302 | OZONE GENERATOR - The present invention provides an ozone generator comprising an anode and a cathode provided on each side of a fluororesin type cation exchange membrane, the anode being a conductive diamond electrode having conductive diamond on the surface, wherein water is supplied to an anode compartment, DC current is supplied between the anode and the cathode to electrolyze water to evolve ozone from the anode compartment and hydrogen from a cathode compartment, the conductive diamond electrode comprising a substrate having a plurality of convexo-concave and a conductive diamond film coated on the surface of the substrate is applied as the conductive diamond electrode, and a close packed layer of ion exchange resin particles or the fluororesin type cation exchange membrane with notch is closely adhered to the surface of the anode side of the fluororesin type cation exchange membrane. | 07-05-2012 |
20120145559 | GAS DIFFUSION ELECTRODE EQUIPPED ION EXCHANGE MEMBRANE ELECTROLYZER - Provided is a gas diffusion electrode equipped ion exchange membrane electrolyzer including an anode, an ion exchange membrane, and a cathode chamber in which a gas diffusion electrode is disposed, wherein the ion exchange membrane and a cathode chamber inner space in which the gas diffusion electrode is disposed are separated by a liquid retaining member, the outer periphery of the liquid retaining member is held in a void formed in a gasket or a cathode chamber frame constituting the cathode chamber, or the outer periphery and the end face of the outer periphery of the liquid retaining member are sealed, or the outer periphery of the liquid retaining member is joined to and integrated with the gasket. | 06-14-2012 |
20120125782 | GAS DIFFUSION ELECTRODE EQUIPPED ION EXCHANGE MEMBRANE ELECTROLYZER - Provided is a gas diffusion electrode equipped ion exchange membrane electrolyzer including an anode, an ion-exchange membrane, and a cathode chamber in which a gas diffusion electrode is disposed, wherein in a cathode gas chamber formed between a back plate of the cathode chamber and one side of the gas diffusion electrode opposite to the electrolytic surface, a gas-permeable elastic member is disposed between the gas diffusion electrode and the back plate, and the elastic member forms a conductive connection between the gas diffusion electrode and the back plate by making contact with corrosion-resistant conductive layers formed on the surfaces of a plurality of conductive members which are joined to the back plate. | 05-24-2012 |
20110143549 | ETCHING METHOD, METHOD FOR MANUFACTURING MICROSTRUCTURE, AND ETCHING APPARATUS - In one embodiment, an etching method is disclosed. The method can include producing an oxidizing substance by electrolyzing a sulfuric acid solution, and producing an etching solution having a prescribed oxidizing species concentration by controlling a produced amount of the produced oxidizing substance. The method can include supplying the produced etching solution to a surface of a workpiece. | 06-16-2011 |
20110073490 | CLEANING METHOD, CLEANING SYSTEM, AND METHOD FOR MANUFACTURING MICROSTRUCTURE - According to one embodiment, a cleaning method is disclosed. The method can produce an oxidizing solution including an oxidizing substance by electrolyzing a dilute sulfuric acid solution. In addition, the method can supply a highly concentrated inorganic acid solution individually, sequentially, or substantially simultaneously with the oxidizing solution to a surface of an object to be cleaned. | 03-31-2011 |
20110073489 | CLEANING LIQUID, CLEANING METHOD, CLEANING SYSTEM, AND METHOD FOR MANUFACTURING MICROSTRUCTURE - According to embodiments, a cleaning liquid includes an oxidizing substance and hydrofluoric acid and exhibiting acidity. A cleaning method is disclosed. The method includes producing an oxidizing solution including an oxidizing substance by one selected from electrolyzing a sulfuric acid solution, electrolyzing hydrofluoric acid added to a sulfuric acid solution, and mixing a sulfuric acid solution with aqueous hydrogen peroxide. The method includes supplying the oxidizing solution and hydrofluoric acid to a surface of an object to be cleaned. | 03-31-2011 |
20100320082 | Conductive diamond electrode and ozone generator using the same - The present invention relates to a conductive diamond electrode, comprising a substrate having a plurality of convex and concave part disposed over the entire surface of the conductive diamond electrode, and a diamond film coated on the surface of said substrate, wherein the width of each convex part of said convex and concave part is in a range from 0.2 mm to 1 mm. The present invention can provide a conductive diamond electrode, applying a thin film of conductive diamond and a thick substrate, being less expensive than a self-supported type conductive diamond electrode and also having mechanical strength enough to be used in the zero-gap electrolysis, functioning stably for a long time with smooth water supply or gas liberation, and an ozone generator using the conductive diamond electrode. | 12-23-2010 |
20100155235 | ELECTRODE FOR HYDROGEN GENERATION AND PROCESS FOR PREPARATION THEREOF - An electrode for hydrogen generation can maintain a low hydrogen overvoltage for a long period of time even when electrolysis is conducted there not only with a low current density but also with a high current density. The electrode for hydrogen generation has a coating layer formed on a conductive base member by applying a material not containing any chlorine atom prepared by dissolving lanthanum carboxylate in a nitric acid solution of ruthenium nitrate and thermally decomposing the material in an oxygen-containing atmosphere. | 06-24-2010 |
20090325390 | Cleaning method by electrolytic sulfuric acid and manufacturing method of semiconductor device - The cleaning method by electrolytic sulfuric acid and the manufacturing method of semiconductor device comprising:
| 12-31-2009 |
20090321272 | Sulfuric acid electrolysis process - Sulfuric acid electrolysis process wherein;
| 12-31-2009 |
20090321252 | Sulfuric acid electrolytic cell and a sulfuric acid recycle type cleaning system applying the sulfuric acid electrolytic cell - In a sulfuric acid electrolytic cell to electrolyze sulfuric acid supplied to an anode compartment and a cathode compartment comprising a diaphragm, said anode compartment and said cathode compartment separated by said diaphragm, a cathode provided in said cathode compartment and a conductive diamond anode provided in said anode compartment, as said conductive diamond anode, a conductive diamond film is formed on the surface of said conductive substrate, the rear face of said conductive substrate is pasted, with conductive paste, on an current collector comprising a rigid body with size equal to, or larger than, said conductive substrate, an anode compartment frame constituting said anode compartment is contacted via gasket with the periphery on the side of the conductive diamond film of said diamond anode, said diaphragm is contacted with the front face of said anode compartment, further, with the front face of said diaphragm, the cathode compartment frame constituting said cathode compartment, a gasket, and said cathode are contacted in sequence, the rear face of said cathode is pasted with conductive paste to the current collector comprising a rigid body with size equal to, or larger than, said cathode and electric power is supplied from one current collector to the other current collector via said conductive paste. | 12-31-2009 |
20090078582 | APPARATUS FOR ELECTROLYZING SULFURIC ACID, METHOD OF PERFORMING ELECTROLYSIS, AND APPARATUS FOR PROCESSING A SUBSTRATE - An apparatus for electrolyzing sulfuric acid, the apparatus comprising an electrolytic cell comprising a cathode chamber having a cathode and an anode chamber having an anode, the cathode chamber and the anode chamber being separated by a diaphragm, a sulfuric acid tank configured to store the sulfuric acid, a supply pipe connecting the sulfuric acid tank to an inlet port of the anode chamber, a connection pipe connecting an outlet port of the cathode chamber to the inlet port of the anode chamber, a first supply pump provided on the supply pipe and configured to supply the sulfuric acid from the sulfuric acid tank to the cathode chamber through the supply pipe, and a drain pipe connected to an outlet port of the anode chamber and configured to supply to a solution tank a solution containing an oxidizing agent generated by electrolysis in the anode chamber. | 03-26-2009 |
20080271847 | Gas diffusion electrode assembly, bonding method for gas diffusion electrodes, and electrolyzer comprising gas diffusion electrodes - In a gas diffusion electrode assembly, and in an electrolyzer using the same, a bonding piece having on at least one surface a perfluorosulfonic acid layer, a perfluorosulfonyl fluoride layer or an alkyl ester of perfluorocarboxylic acid layer is positioned at its perfluoro compound layer surface with respect to the gas diffusion electrode assembly. Adjacent gas diffusion electrodes are heat fusion bonded together, or heat fusion bonding is carried out using the bonding piece in a frame form. Adjacent gas diffusion electrodes are sealed up by heat fusion bonding, using a material that is similar to the material that forms the gas diffusion electrodes. | 11-06-2008 |
20080264780 | Water electrolysis system - In a water electrolysis system having an anode catalyst layer containing anode catalyst and a cathode catalyst layer containing cathode catalyst tightly attached, respectively, to each surface of a solid polymer electrolyte membrane comprising a cation exchange membrane, wherein at least one catalyst layer of said anode catalyst layer and cathode catalyst layer comprises a porous structure of anode catalyst or cathode catalyst dispersed in fluorine resin containing resin, featuring the surface of the anode catalyst layer or the cathode catalyst layer being hydrophobized and the water contact angle with the surface of the anode catalyst layer or the cathode catalyst layer of said porous structure being 90 degrees or more, whereby the transfer of gas to the counter electrode can be significantly suppressed, gas purity and current efficiency be improved, and safety operation of the electrolysis system be secured, without a major change in configuration of the water electrolysis system. | 10-30-2008 |
20080196743 | CLEANING METHOD AND METHOD FOR MANUFACTURING ELECTRONIC DEVICE - A cleaning method includes: producing an oxidizing solution by electrolysis of sulfuric acid; and cleaning a workpiece with the oxidizing solution. The oxidizing solution is heated by heat of mixing to clean the workpiece. A method for manufacturing an electronic device includes: producing a workpiece; producing an oxidizing solution by electrolysis of sulfuric acid; and cleaning the workpiece with the oxidizing solution. The oxidizing solution is heated by heat of mixing to clean the workpiece. | 08-21-2008 |