Patents
Sitemap › C25 - Electrolytic or electrophoretic processes; Apparatus therefor › C25B - Electrolytic or electrophoretic processes for the production of compounds or non- metals; Apparatus therefor › C25B 1 - Electrolytic production of inorganic compounds or non-metals
Patents for C25B 1 - Electrolytic production of inorganic compounds or non-metals (13,948)
12/1989
12/28/1989WO1989012705A1 Sodium hydrosulfite electrolytic cell process control system
12/28/1989WO1989012704A1 Process and apparatus for the production of fuel gas and the enhanced release of thermal energy from such gas
12/27/1989CN1038314A Environmental pollution-free composite electrode for sodium hypochlorite generator
12/27/1989CN1006239B Multi-layered diaphragm for electrolysis
12/26/1989US4889604 Loading semiconductor with noble metal and transition metal oxide, suspending in dioxygygen complex of ruthenium; solar radiation
12/20/1989EP0346933A2 Use of electrically conductive water-in-oil microemulsions based on perfluorinated compounds as catholytes in electrochemical processes
12/20/1989EP0346932A2 Use of electrically conductive oil-in-water microemulsions based on perfluorinated compounds as catholytes in electrochemical processes
12/13/1989EP0345354A1 Process for purifying nitrogen-fluoride
12/06/1989EP0344378A1 Oxygen-generating electrode and method for the preparation thereof
12/05/1989US4885142 Apparatus in the form of a disk for the separation of oxygen from other gases and/or for the pumping of oxygen and the method of removing the oxygen
12/05/1989CA1263695A1 Fuel cell system
11/1989
11/29/1989CN1037553A Process for controlling electrolysis cell
11/29/1989CN1005920B Method for prolonging operating life of hydrogen-releasing electrode
11/28/1989CA1263339A1 Electrolytic cell for the electrolysis of an alkali metal chloride
11/23/1989DE3816380A1 Method of producing an electrode for generating high current densities at points, with a low electrolysis current
11/21/1989US4882024 Hydrogen generator having a low oxygen overpotential electrode
11/21/1989US4882014 Electrochemical synthesis of ceramic films and powders
11/16/1989WO1989010981A1 Apparatus and method for dissolving hazardous waste materials by catalyzed electrochemical dissolution
11/15/1989EP0342167A1 Bipolar-electrode type electrolytic cell
11/08/1989CN1036933A Salt mixture for preparation of magnesium and chlorine
11/07/1989US4879016 Undercoat
11/02/1989DE3813017A1 Vorrichtung zur elektrochemischen behandlung von radioaktiven brennstoffloesungen Apparatus for electrochemical treatment of radioactive fuel loesungen
11/01/1989CN1036804A Process for recovery of alkanolamines from their heat-stable salts formed in alkanolamine sorbent solutions
10/1989
10/31/1989US4877498 Method for producing a metal salt by electrolysis
10/31/1989CA1262534A1 Narrow gap reticulate electrode electrolysis cell
10/25/1989CN1036606A Membrane electrolytic process for producing concentrated caustic
10/18/1989CN1036413A Titanium anode for electrochemical industry
10/17/1989US4874482 Liquid electrolyte is melt; of alkali (earth) metal halide
10/11/1989EP0336542A1 Process for the regeneration of a permanganate etchant bath
10/10/1989US4873046 Stretching while heating
10/10/1989US4872957 Electrochemical cell having dual purpose electrode
09/1989
09/27/1989CN1035856A Apparatus for decomposing water into hydrogen and oxygen
09/26/1989CA1261300A1 Circulating electrolyte electrochemical cell having gas depolarized cathode with hydrophobic barrier layer
09/26/1989CA1260430A1 Coated valve metal anode for electrolytic extraction of metals or metal oxides
09/26/1989CA1260428A1 Suspension bath and process for production of electrolytic manganese dioxide
09/20/1989EP0333556A1 Regulation process of an electrolysis cell
09/20/1989EP0333281A1 Membrane electrolysis device
09/20/1989CN1035687A Improved diaphragm for electrolytic cell
09/19/1989CA1259582A1 Process for electrically separating individual electrolyte spaces of a pile of bipolar electrochemical cell
09/13/1989EP0332512A1 Process for electrochemically oxidising cerium 3+ to cerium 4+, in an emulsion
09/13/1989EP0332394A1 Electrosynthesis of sodium dithionite
09/13/1989EP0332115A1 Process for manufacturing nitrides suitable for ceramic materials
09/13/1989CN1035531A Synthesis of metallic salts of weak acids, in particular, indium formate
09/12/1989CA1259275A1 High current density cell
09/12/1989CA1259274A1 Process for removing available halogen from anolyte brine
09/05/1989US4863817 Manganese dioxide
09/05/1989CA1259052A1 Durable electrode for electrolysis and process for production thereof
09/05/1989CA1259051A1 Electrolytic cell and method of operation
08/1989
08/29/1989CA1258820A1 Electrolyzing dilute caustic soda solution with sequential polarity inversion
08/23/1989EP0328818A2 Production of chlorine dioxide in an electrolytic cell
08/23/1989CN1034964A Rare-earth hexaboronide synthesized by melted salt electrolysis technique
08/22/1989US4859296 From gaseous mixtures such as air, using oxygen-containing molten salt electrolyte in porous matrix
08/22/1989US4859294 Process for electrochemically oxidizing sulphuric acid chromium-III-solutions to chromium-VI-solutions
08/22/1989US4859293 Making gold iodide solution in electrolytic cell; basification, reduction, precipitation
08/22/1989US4859292 Hydrogen sulfide to hydrogen and sulfur
08/15/1989US4857158 Sodium hydrosulfite electrolytic cell process control system
08/15/1989US4857155 Process of separation of hafnium from zirconium by molten salt electrolysis
08/10/1989WO1989007161A1 Preparation of superconducting oxides by electrochemical oxidation: anodic superconductors
08/10/1989WO1989007160A1 Process for the recovery of alkanolamines from their heat-stable salts formed in alkanolamine sorbent solutions
08/09/1989EP0327313A2 Membrane electrolytic process for producing concentrated caustic
08/08/1989US4855023 Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids used in semiconductor wafer cleaning
08/08/1989CA1258250A1 Perforated bipole electrochemical reactor
08/02/1989EP0326427A2 Process for the recovery of alkanolamines from their heat-stable salts formed in alkanolamines sorbent solutions
08/01/1989US4853096 Production of chlorine dioxide in an electrolytic cell
08/01/1989US4853095 Conversion of manganese dioxide to permanganate
08/01/1989CA1258045A1 Bipolar electrolysis apparatus with gas diffusion cathode
07/1989
07/27/1989WO1989006711A1 Fully automated current-controlled electrolytic cell assembly for the production of gases
07/27/1989EP0245494A4 Solid state electrochemical pollution control device.
07/26/1989EP0202311B1 Electrolytic reduction of cobaltic amine
07/19/1989EP0324664A1 Synthesis of indium formiate
07/18/1989US4849073 Direct electrochemical reduction of nitric acid to hydroxylamine nitrate
07/18/1989CA1257562A1 Electrolysis cell with anodes and cathodes fixed to plastic frame members
07/18/1989CA1257560A1 Electrochemical removal of hypochlorites from chlorate cell liquors
07/12/1989EP0245279B1 Method for the electrochemical oxidation of sulphuric acid chromium iii solutions into chromium vi solutions
07/11/1989US4846943 Manufacture of an alkali metal aluminum halide compound and alkali metal
06/1989
06/20/1989CA1256062A1 Electrolytic cation exchange membrane
06/20/1989CA1256055A1 Brine acidification in 3-compartment electrodialytic water splitter
06/14/1989CN1004496B Production method of electrolytic hydrogen-permeation cathode of palladium alloy
06/13/1989US4839003 Process for producing alkali hydroxide, chlorine and hydrogen by the electrolysis of an aqueous alkali chloride solution in a membrane cell
06/07/1989EP0319489A1 Electrode catalyst and method for production thereof
06/07/1989EP0318589A1 Method for producing an alkali metal hydroxide.
06/06/1989US4836992 Electrolysis
06/06/1989US4836903 Sodium hydrosulfite electrolytic cell process control system
06/06/1989CA1255248A1 Process for removing sulphate from electrolysis brine
05/1989
05/31/1989EP0318442A2 Electrode structure
05/31/1989EP0195072B1 Seal for electrolytic cells
05/31/1989CN2038501U Composite positive pole for electrolytic production of hydrogen peroxide
05/31/1989CN1004363B Concurrent production of electrolytic metallic manganese and fibred electrolytic manganese dioxide
05/30/1989US4834847 Reduced energy consumption
05/24/1989EP0317115A1 Fluorine-generating electrolytic cells
05/24/1989DE3800546C1 Method for preparing potassium dicyanoaurate
05/23/1989US4832805 Multi-layer structure for electrode membrane-assembly and electrolysis process using same
05/23/1989US4832804 Electrolytic cell
05/18/1989WO1989004444A1 Process for liquefying, concentrating and purifying nitrogen trifluoride
05/18/1989DE3802699A1 Verfahren zur elektrolytischen herstellung einer hydroxylaminnitratloesung durch direkte reduktion von salpetersaeure Process for the electrolytic production of a hydroxylaminnitratloesung by direct reduction of nitric acid
05/17/1989CN2037738U Pneumatic water electrolyzer
05/16/1989US4830718 Removal of sulfur dioxide (SO2) from waste gases and recovery as sulfuric acid
05/16/1989CA1254170A1 Electrolytic oxidation process, and electrolysis installation for said process
05/09/1989US4828660 Method and apparatus for the continuous on-site chemical reprocessing of ultrapure liquids
05/05/1989WO1989003809A1 Hypobromination of water
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