| Patents for C25B 1 - Electrolytic production of inorganic compounds or non-metals (13,948) |
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| 08/28/1991 | CN1054104A Preparation for nickel salt by ac electrolysis |
| 08/22/1991 | WO1991012356A1 Electrochemical process for producing chloric acid-alkali metal chlorate mixtures |
| 08/22/1991 | CA2074082A1 Electrochemical process for producing chloric acid - alkali metal chlorate mixtures |
| 08/21/1991 | EP0442644A1 Carbon electrode, and method and apparatus for the electrolysis of a hydrogen fluoride-containing molten salt by the use of the carbon electrode |
| 08/20/1991 | US5041197 H2 /C12 fuel cells for power and HCl production - chemical cogeneration |
| 08/20/1991 | US5041196 Electrochemical method for producing chlorine dioxide solutions |
| 08/20/1991 | US5041195 Gold electrocatalyst, methods for preparing it, electrodes prepared therefrom and methods of using them |
| 08/20/1991 | CA1287815C Electrolytic production of chlorine dioxide |
| 08/20/1991 | CA1287794C Apparatus for effecting gas-liquid contact |
| 08/13/1991 | US5039383 Continuous removal of product to prevent corrosion of electrodes |
| 08/13/1991 | US5039382 Method for producing an alkali metal hydroxide |
| 08/13/1991 | CA1287596C Production of sodium chlorate |
| 08/07/1991 | CN1013453B Electrolyser of the filter-press type |
| 08/06/1991 | US5037518 Apparatus and method for generating hydrogen and oxygen by electrolytic dissociation of water |
| 08/06/1991 | CA2035635A1 Solid oxide electrolyte electrochemical oxygen generator |
| 08/06/1991 | CA1287323C Apparatus and method for purifying hydrogen |
| 07/31/1991 | EP0215078B1 Monopolar and bipolar electrolyzer and electrodic structures thereof |
| 07/30/1991 | US5035869 Process for reducing uranyl salt |
| 07/23/1991 | US5034029 Apparatus for effecting gas-liquid contact |
| 07/17/1991 | CN2080944U 超纯氢发生器 Ultra-pure hydrogen generator |
| 07/10/1991 | EP0436146A1 Process for the electrochemical regeneration of chromosulphuric acid |
| 07/03/1991 | EP0434686A1 Removal of nitric oxide from waste gases and recovery as nitric acid. |
| 07/02/1991 | US5028307 Apparatus for generation of hydrogen and other gases from the decomposition of organic matter |
| 06/27/1991 | WO1991009990A1 Electrochemical chlorine dioxide generator |
| 06/27/1991 | WO1991009158A1 Electrochemical process for producing chlorine dioxide solutions from chlorites |
| 06/26/1991 | EP0433750A1 Process for the preparation of chromic acid |
| 06/26/1991 | EP0433748A1 Process for the preparation of chromic acid |
| 06/26/1991 | CN1052515A Method for acid balance in simultaneous electrolysis of zn and mno2 |
| 06/17/1991 | CA2032369A1 Process for the preparation of chromic acid |
| 06/17/1991 | CA2032368A1 Process for the preparation of chromic acid |
| 06/13/1991 | WO1991008609A2 An alternator unit and an engine including the same |
| 06/12/1991 | EP0432109A1 Process for reducing uranyl salt |
| 06/12/1991 | EP0207122B1 Gas generator of an engine |
| 06/12/1991 | CN1052152A Production of alkali metal chlorates or perchlorates |
| 06/11/1991 | US5022975 Solid state electrochemical pollution control device |
| 06/05/1991 | EP0430830A1 Manufacture of alkalimetal chlorate or perchlorate |
| 06/05/1991 | CN2078326U Sodium hypochlorite generating device |
| 06/05/1991 | CN1012743B Titanium anode for electrochemical industry |
| 06/05/1991 | CN1012742B Prodn. process of sodium perchlorate |
| 06/04/1991 | US5021137 Ceramic solid electrolyte based electrochemical oxygen concentrator cell |
| 06/04/1991 | US5021133 Decomposing tungsten carbide in solution of ammonium hydroxide and ammonium chloride, ammonium carbonate or ammonium sulfate; crystallization |
| 05/30/1991 | CA2030978A1 Preparation of alkali metal chlorate or perchlorate |
| 05/29/1991 | CN1012687B Current collector combined with solid high-polymer membrane |
| 05/29/1991 | CN1012686B Monopolar and bipolar electrolyzer and electrodic structures thereof |
| 05/28/1991 | US5019227 Electrochemical method for producing hydrogen and sulfur |
| 05/22/1991 | EP0428171A1 Electrolysis cell for the manufacture of peroxo- and perhalogenate compounds |
| 05/21/1991 | WO1991007524A1 Method of separating dinitrogen pentoxide from its solution in nitric acid |
| 05/15/1991 | CN1051401A Electrolytic apparatus for producing hydrogen and oxygen |
| 05/08/1991 | EP0426649A1 Process for the stepwise electrodialysis of alkali sulfate-containing aqueous solutions and apparatus for carrying out the process |
| 05/07/1991 | WO1991006692A1 Ceramic solid electrolyte based electrochemical oxygen concentrator cell and method of fabrication |
| 05/07/1991 | US5013414 Electrode structure for an electrolytic cell and electrolytic process used therein |
| 05/07/1991 | CA2073052A1 Ceramic solid electrolyte based electrochemical oxygen concentrator cell and method of fabrication |
| 05/02/1991 | EP0424727A1 Method for producing nitrogen trifluoride |
| 04/30/1991 | US5011672 Oxidation of manganese dioxide in pyrolusite ore and potassium hydroxide with air, water and oxygen |
| 04/30/1991 | CA1283624C Process for electrolysis of sulfate-containing brine |
| 04/24/1991 | CN1012441B Production of sodium chlorate |
| 04/23/1991 | US5009755 Refining method |
| 04/17/1991 | EP0422994A1 Apparatus for the production by electrolysis of water of a hydrogen-oxygen gaseous mixture used for feeding an ionisation flame |
| 04/16/1991 | US5007992 Method and apparatus for removing oxygen from a semiconductor processing reactor |
| 04/10/1991 | EP0420910A1 Sodium hydrosulfite electrolytic cell process control system |
| 04/10/1991 | CN1012321B Process for electrolytytic oxidation and apparatus for carrying out the same |
| 04/09/1991 | CA1282733C Electrolytic cell with solid polymer electrolyte diaphragm and porous electrode catalyst |
| 04/02/1991 | US5004527 By electrolysis of alkali metal chlorate which is maintained homogeneous and uniform in composition |
| 03/27/1991 | CN1050229A Hydrogen-evolution electrode having high durability and stability |
| 03/26/1991 | US5002640 Process for the production of nitrides suitable for ceramic materials |
| 03/26/1991 | CA1282032C Process for preparing diaphragm-deposited activated cathodes |
| 03/26/1991 | CA1282029C Restoring current efficiency by temporary suspension of electrolysis and reduced catholyte concentration |
| 03/20/1991 | EP0417804A1 Method of anodic deposition of manganese |
| 03/20/1991 | EP0417647A1 Apparatus and method for generating hydrogen and oxygen by electrolytic dissociation of water |
| 03/20/1991 | EP0417211A1 Conversion of manganate to permanganate. |
| 03/20/1991 | CN1050056A Process for manufacture of sodium hydroxide lye |
| 03/19/1991 | CA1281681C Electrode of organic platics material and conducting fibres, and electrochemical cell containing said electrode |
| 03/19/1991 | CA1281680C Electrolytic cell with electrode material in a non-conducting pipe |
| 03/13/1991 | CN1049875A Frame unit for electrolyser of filter-press type and monopolar electrolyser of filter-press type |
| 03/13/1991 | CN1049874A Process for manufacture of sodium hydroxide lye |
| 03/13/1991 | CN1011989B Electrode for electrolysis |
| 03/13/1991 | CN1011988B Apparatus for decomposing water into hydrogen and oxygen |
| 03/12/1991 | CA1281305C Electrochemical activation of chemical reactions |
| 03/06/1991 | EP0415896A1 Electrode for electrolysis |
| 03/06/1991 | CN2072537U Solid polymeric compound electrolyte hydrogen generator |
| 03/05/1991 | US4997531 Process for manufacturing electrolytic manganese oxide |
| 03/05/1991 | CA1280996C Electrolytic process for manufacturing pure potassium peroxydiphosphate |
| 02/26/1991 | US4995952 Electrolysis of water using hydrogen sulfide |
| 02/26/1991 | US4995950 Preparation of alkali metal nitrates |
| 02/26/1991 | CA1280716C2 Ion exchange membrane with non-electrode layer for electrolytic processes |
| 02/26/1991 | CA1280714C Electrolytic cell module |
| 02/20/1991 | EP0413385A1 Process for manufacturing a sodium hydroxide caustic solution |
| 02/20/1991 | EP0413384A1 Process for manufacturing a sodium hydoxide caustic solution |
| 02/20/1991 | CN1049385A Improved diaphragms containing asbestos fibres, jointers for jointing cathode elements to diaphragms, and process for obtaining diaphragms and jointers |
| 02/20/1991 | CN1049384A Diaphragm, assembly of diaphragm and cathode element, and process for manufacturing them |
| 02/19/1991 | US4994156 Perfluoropolyethers, fluorinated surfactant and hydrogenated alcohol |
| 02/18/1991 | CA2023412A1 Production process for sodium hydroxide lye |
| 02/18/1991 | CA2023411A1 Production process for sodium hydroxide lye |
| 02/13/1991 | EP0412917A1 Diaphragm, association of such a diaphragm with a cathodic element and their process of manufacture |
| 02/13/1991 | EP0412916A1 Diaphragm comprising asbestos fibres, association of such a diaphragm with a cathodic element and process of manufacture |
| 02/13/1991 | EP0412600A1 Frame for electrolyzer of the filterpress type and monopolar electrolyzer of the filterpress type |
| 02/13/1991 | EP0412589A2 A cation exchange membrane having high durability |
| 02/12/1991 | US4992156 Submerged electrolytic cell wired in existing water circulation piping |
| 02/12/1991 | US4992149 Leaching with acidic solvent of tetrafluoroboric acid, electrolysis |
| 02/12/1991 | US4992148 Process for the electrolytic manufacture of alkali metal sulphide |