Patents for C25B 1 - Electrolytic production of inorganic compounds or non-metals (13,948)
08/1990
08/14/1990US4948476 Using electrolytic oxidation cell and coupled transport module
08/14/1990CA1272694A1 Monopolar electrochemical cell having a novel electric current transmission element
08/14/1990CA1272647A1 Gas generator
08/09/1990WO1990008845A1 Removal of nitric oxide from waste gases and recovery as nitric acid
08/09/1990WO1990008634A1 Harvester for removing a substance from a plate
08/07/1990US4946565 Process for the production of alkali metal chlorate
08/01/1990EP0218706B1 Electrodes for use in electrochemical processes and method for preparing the same
08/01/1990CN2059920U Electrolyzer for high-purity hydrogen generator
07/1990
07/26/1990WO1990008295A1 Method and apparatus for the production of liquid oxygen and liquid hydrogen
07/26/1990WO1990008207A1 Cryoelectrosynthesis
07/25/1990CN2059659U Electrolyzer for acid or alkali
07/23/1990CA2007464A1 Cryoelectrosynthesis
07/17/1990CA1271772A1 Oxidation of organic compounds using ceric ions in aqueous methanesulfonic acid
07/10/1990CA1271490A1 Oxidation of organic compounds using thallium ions
07/10/1990CA1271484A1 Oxidation of organic compounds using ceric methanesulfonate in an aqueous organic solution
07/03/1990US4938852 Recovery of europium (II) values by electrolysis
06/1990
06/28/1990WO1990007020A1 Electrochemical generation of dinitrogen pentoxide in nitric acid
06/27/1990EP0215016B1 Solid compositions based on superoxides, production thereof and electrochemical applications thereof
06/27/1990EP0211028B1 Process for making a polymer-modified electrode
06/27/1990CN1008543B Process for electrolysis of water
06/26/1990US4936972 Membrane electrolyzer
06/26/1990US4936970 Redox reactions in an electrochemical cell including an electrode comprising Magneli phase titanium oxide
06/26/1990US4936961 Generation of hydrogen and oxygen by using water as dielectric between capacitor plates in electrical resonant circuit
06/20/1990EP0373791A1 A non-hydrous electrolyte lithium primary cell and a method for manufacturing manganese dioxide therefor.
06/20/1990CN1008446B Leaching process
06/19/1990US4935110 Electrode structure and process for fabricating the same
06/06/1990EP0371927A1 A method of obtaining stannous sulphate, and equipment for the implementation of such a method
06/05/1990US4931154 Production of metal borohydrides and organic onium borohydrides
05/1990
05/31/1990WO1990005798A1 Electrocatalyst, methods for preparing it, electrodes prepared therefrom and methods for using them
05/30/1990EP0370149A2 Ionic semiconductor materials and applications thereof
05/30/1990CN1042574A Process for continuous preparation of perchlorate of alkali motal
05/30/1990CN1042573A Anode of electrolytic water application for welding machine and its processing method
05/30/1990CN1008190B Method for producing alkali metal hydroxide and electrolytic cell useful for the method
05/23/1990EP0369732A1 Electrochemical reduction-oxidation reaction and apparatus
05/22/1990US4927800 Electrode catalyst and method for production thereof
05/22/1990US4927793 Proton conductive material and method of manufacturing thereof
05/22/1990US4927514 Platinum black air cathode, method of operating same, and layered gas diffusion electrode of improved inter-layer bonding
05/22/1990US4927509 Bipolar electrolyzer
05/22/1990CA1269346A1 Multi-layered diaphragm for electrolysis
05/22/1990CA1269283A1 Non-organic/polymer fiber composite, method of making same and use including dimensionally stable separator
05/17/1990CA2003299A1 Electrocatalyst, methods for preparing it, electrodes prepared therefrom and methods of using them
05/16/1990EP0368812A1 Method and apparatus for electrolyzing water
05/16/1990EP0368767A1 Continuous process for manufacturing alkali metal perchlorate
05/16/1990EP0368066A1 Process for the preparation of sodium dichromate
05/15/1990US4925639 Removal of nitric oxide from waste gases and recovery as nitric acid
05/15/1990US4925537 Process for separation of hafnium tetrachloride from zirconium tetrachloride and electrode
05/14/1990CA2002707A1 Electrochemical reduction-oxidation reaction and apparatus
05/10/1990DE3837354A1 Method and appliance for safeguarding a high-pressure water electrolysis system
05/08/1990CA1268731A1 Process for preparation of high purity chalcogenide elements by the electrochemical reduction of chalcogenide esters
05/08/1990CA1268730A1 Purification of gases containing mercury and recovery of metallic mercury
05/02/1990EP0365558A1 The electrochemical generation of n 2?o 5?
05/02/1990CN1007829B Method for removing sulfate from electrolytic brine
05/01/1990US4921545 Supported tool strikingly engages manganese dioxide; electrolytic cells
04/1990
04/25/1990EP0365113A1 Production of chloric acid
04/25/1990CN1007737B Active cathode with porous nickel plating and preparation thereof
04/24/1990US4919791 Controlled operation of high current density oxygen consuming cathode cells to prevent hydrogen formation
04/24/1990US4919781 Having a base, cooling coils, a layer of ptfe on base electrical insulation
04/24/1990US4919772 Electrolytic cell/process for the reduction of titanium/iron solutions
04/18/1990CN1041404A Process for cooling of gaseous chlorine
04/11/1990EP0363314A1 Process and device for recovering catalyst constituents
04/11/1990EP0362445A1 Electrical conditioning system for electrodes in an electrolysis cell
04/10/1990US4915927 Electrolysis-electrodialysis in multi compartment cell of aqueous chlorate solution
04/10/1990US4915809 Carbon electrodes including trasition metal dispersed therein
04/05/1990DE3932895A1 Pressurised gas generator - with automatically controlled operation, esp. for electrolytic hydrogen prodn.
04/04/1990EP0362164A2 Method and apparatus for treating water using electrolytic ozone
03/1990
03/29/1990DE3832207A1 Process for operating electrochemical cells equipped with solid electrolytes using unsoftened, undemineralised feed water
03/28/1990EP0360536A2 Cell and method of operating a liquid-gas electrochemical cell
03/28/1990EP0360486A2 Process for cooling of gaseous chlorine
03/28/1990EP0360047A1 Eatables and drinkables
03/27/1990US4911802 Subjecting an aqueous solution of alkali metal manganate and alkali hydroxide to electrolytic oxidation
03/21/1990EP0359631A1 New electrolysis cell and electrolysis unit for putting it in active operation
03/20/1990US4909912 Ion exchange membrane cell and electrolytic process using thereof
03/20/1990US4909911 In electrolytic cell; producing hydrogen peroxide
03/13/1990US4908113 Apparatus for the electrochemical separation of oxygen
03/13/1990US4908108 Electrolytic oxidation of cerium 3+ values to cerium 4+ values
03/07/1990EP0357077A2 Platinum black air cathode, method of operating same, and layered gas diffusion electrode of improved inter-layer bonding
03/07/1990EP0356807A2 Process for the production of alkali dichromates and chromic acid
03/07/1990EP0356806A2 Process for the production of chromic acid
03/07/1990EP0356805A2 Process for the production of alkali dichromates and chromic acid
03/07/1990EP0356804A2 Process for the production of alkali dichromates and chromic acid
03/07/1990EP0356803A2 Process for the preparation of an electrolyte for obtaining alkali metal bichromates and chromic acid
03/07/1990EP0356802A2 Electrochemical process for the production of chromic acid
03/07/1990EP0196317B1 Non-organic/polymer fiber composite, method of making same and use including dimensionally stable separator
03/01/1990DE3927582A1 Elektrolytische zelle Electrolytic cell
02/1990
02/21/1990CN2053096U Multipurpose miniature disinfectant generator
02/14/1990CN1006814B Durable electrolytic electrode and process for manufacture thereof
02/13/1990US4900585 Cathode and process for the manufacture thereof
02/13/1990US4900408 Tetrafluoroethylene copolymer with perfluorinated vinyl ether salt is cation exchange resin
02/07/1990EP0353367A1 Combined process for production of chlorine dioxide and sodium hydroxide
02/06/1990CA1265472A1 Cation exchange fluoropolymer membrane
01/1990
01/31/1990CN1039270A Method and equipment for electrolyzing metal mn and mno2 in same electrolyzer
01/24/1990CN1039072A Electrolysis process and equipment for producing standard hydrogen sulphide
01/23/1990US4895905 Gel-type chelating resins and a process for removal of multi-valent, alkaline earth or heavy metal cations from solutions
01/23/1990US4895634 Porous separatory member entirely made of polyphenylene sulfide for the electrolysis of water
01/17/1990CN1006468B Air electrode for producing basic hydrogen peroxide and its manufacturing method
01/10/1990CN1038675A Electrically conductive microemulsions of water in oil type based on perfluorinated compounds and used as catholyte in electrochemical processes
01/10/1990CN1038674A Electrically conductive oil in water microemulsions based on perfluorinated compounds and used as catholyte in electrochemical processes
01/03/1990CN2050429U Oxygen generator by electrolyzing water
01/03/1990CN2050428U Oxygen/hydrogen generator
01/02/1990US4891107 Porous diaphragm for electrochemical cell