| Patents for C25B 15 - Operating or servicing of cells (4,262) |
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| 09/12/1989 | CA1259274A1 Process for removing available halogen from anolyte brine |
| 09/05/1989 | CA1259051A1 Electrolytic cell and method of operation |
| 08/29/1989 | CA1258820A1 Electrolyzing dilute caustic soda solution with sequential polarity inversion |
| 08/23/1989 | EP0328818A2 Production of chlorine dioxide in an electrolytic cell |
| 08/17/1989 | DE3804659A1 Water electrolysis system with a hydrogen and an oxygen gas outlet from an electrolytic cell |
| 08/16/1989 | EP0327794A1 An antisurge outlet apparatus for use in electrolytic cells |
| 08/15/1989 | US4857200 Dechlorination of aqueous alkali metal chloride solution |
| 08/15/1989 | US4857162 Chromium solution regenerator |
| 08/15/1989 | US4857158 Sodium hydrosulfite electrolytic cell process control system |
| 07/27/1989 | WO1989006711A1 Fully automated current-controlled electrolytic cell assembly for the production of gases |
| 07/19/1989 | EP0324266A1 Method for setting electrodes in aluminium electrolysis cells |
| 07/18/1989 | CA1257560A1 Electrochemical removal of hypochlorites from chlorate cell liquors |
| 07/13/1989 | WO1989006290A1 Dampening device for use in electrochemical cells |
| 07/11/1989 | US4846952 Flat plate electrolysis cell frame separator and method |
| 07/11/1989 | US4846951 Process and apparatus for controlling gasket force in electrolysis cells |
| 07/11/1989 | CA1257221A1 Process and installation for percolation electrolysis through one or a plurality of porous volumic electrodes |
| 06/29/1989 | WO1989005873A1 Method for detecting defective ion exchange membranes in monopolar and bipolar electrolyzers |
| 06/13/1989 | US4839012 Antisurge outlet apparatus for use in electrolytic cells |
| 06/13/1989 | US4839003 Process for producing alkali hydroxide, chlorine and hydrogen by the electrolysis of an aqueous alkali chloride solution in a membrane cell |
| 06/06/1989 | US4837002 Removal of chlorate from caustic soda |
| 06/06/1989 | US4836903 Sodium hydrosulfite electrolytic cell process control system |
| 06/06/1989 | CA1255248A1 Process for removing sulphate from electrolysis brine |
| 05/30/1989 | US4834848 Electrical removal of chromium from chlorate solutions |
| 05/24/1989 | EP0316626A1 Electrochemical cell |
| 05/23/1989 | US4832804 Electrolytic cell |
| 05/02/1989 | CA1253453A1 Addition of reducing agent to prevent degradation of low hydrogen overvoltage cathode |
| 04/25/1989 | US4824534 Process for electrically separating the electrolyte-bearing mains from the electrolyte spaces of an electrochemical cell pile |
| 04/18/1989 | US4822469 Electrical power supply for an electrolytic gas generator |
| 04/18/1989 | US4822461 Electrolytic cell |
| 04/18/1989 | CA1252753A1 Selective removal of chlorine from solutions of chlorine dioxide and chlorine |
| 04/18/1989 | CA1252752A1 Production of hexavalent chromium for use in chlorate cells |
| 03/29/1989 | CN1031945A Stripping and recovery of dichromate in electrolytic chromate system |
| 03/22/1989 | EP0308175A1 Stripping and recovery of dichromate in electrolytic chlorate systems |
| 02/15/1989 | EP0302891A1 Method and plant for electrolysis by seeping through one or a plurality of porous voluminal electrodes. |
| 02/14/1989 | US4804528 Stripping and recovery of dichromate in electrolytic chlorate systems |
| 02/14/1989 | US4804452 Electrolytic processor |
| 02/07/1989 | US4802960 Controlling ionic movement; positioning screen electrode within separator |
| 02/01/1989 | CN2031798U Brine cut-out apparatus |
| 01/31/1989 | US4801359 Solid compositions based on superoxides having high ionic conductivity, their method of manufacture, and their electrochemical applications |
| 01/10/1989 | US4797186 Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product |
| 12/28/1988 | EP0296736A1 Electrolytic cell incorporating a differential gas pressure control device |
| 12/27/1988 | US4793909 Electrolytic chlorine generator with salt spacer |
| 12/20/1988 | US4792384 Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product |
| 12/13/1988 | US4790914 Upward flowing of electrolytes and gases; minimize the contact between ion permeable membrane and cathode |
| 12/06/1988 | CA1246009A1 Hydrogen vent assembly |
| 11/15/1988 | US4784735 Concentric tube membrane electrolytic cell with an internal recycle device |
| 10/25/1988 | US4780187 Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product |
| 10/18/1988 | US4778579 Independent voltage cells; greater efficiency |
| 10/11/1988 | US4776930 Efficient electrolytic process; high purity; fertilizers |
| 09/27/1988 | US4773975 Reduction, electrolysis |
| 09/27/1988 | US4773974 Production of hexavalent chromium for use in chlorate cells |
| 08/30/1988 | US4767514 Apparatus and method for removing liquid from liquid bearing material |
| 08/30/1988 | CA1241289A1 Electrolysis process using liquid electrolytes and porous electrodes |
| 08/25/1988 | DE3704955A1 Electrolyser |
| 07/27/1988 | EP0150017B1 Electrochemical method for the treatment of liquid electolytes |
| 07/05/1988 | US4755272 Bipolar electrochemical cell having novel means for electrically connecting anode and cathode of adjacent cell units |
| 06/14/1988 | CA1238011A1 Chlor-alkali cell control system based on mass flow analysis |
| 05/31/1988 | US4747917 Scale-free process for purifying concentrated alkali metal halide brines containing sulfate ions as an impurity |
| 05/24/1988 | US4746441 Method of purifying brine for electrolytic chemical production |
| 05/18/1988 | EP0267704A1 Electrochemical removal of chromium from chlorate solutions |
| 05/17/1988 | US4744873 Multiple compartment electrolytic cell |
| 05/11/1988 | EP0266801A2 Process for manufacturing alkali hydroxide, chlorine and hydrogen by electrolysis of an aqueous alkali chloride solution in a membrane cell |
| 05/11/1988 | CN87107550A Selective removal of chlorine from solutions of chlorine dioxide and chlorine |
| 05/04/1988 | EP0266129A2 Electrochemical removal of hypochlorites from chlorate cell liquors |
| 05/04/1988 | EP0266128A2 Production of hexavalent chromium for use in chlorate cells |
| 05/04/1988 | EP0266127A1 Selective removal of chlorine from solutions of chlorine dioxide and chlorine |
| 04/19/1988 | CA1235382A1 Brine systems for chlor-alkali membrane cells |
| 04/05/1988 | CA1234778A1 Flowing ionizable gases along exposed edge of catalytic electrode or barrier of cell |
| 03/08/1988 | US4729822 Electrolytic cell |
| 03/08/1988 | US4729819 Temporary shutdown, electrolysis of sodium chloride |
| 02/16/1988 | US4725341 Supplying hydrochloric acid to anode and cathode compartments separated by membrane |
| 02/09/1988 | US4724059 Conductivity probes to detect liquid in anode, cathode compartments, flushing means and vacuum chamber |
| 02/02/1988 | US4722775 Apparatus and method for controlling anode movement in aluminium reduction cells |
| 02/02/1988 | US4722773 Hydrophilic, hydrophobic fluoropolymers, conductive carbon, alkali metal halide and hydroxide |
| 02/02/1988 | CA1232232A1 Chlorine cell design for electrolyte series flow |
| 01/27/1988 | EP0254361A1 Process for the preparation of potassium nitrate |
| 12/29/1987 | CA1230850A1 Multichamber two-compartment electrodialytic water splitter and method of using same for acidification of aqueous soluble salts |
| 12/23/1987 | EP0250127A2 Electrolytic cell |
| 12/23/1987 | EP0250108A2 Electrolytic cell |
| 12/17/1987 | WO1987007653A1 Method and plant for electrolysis by seeping through one or a plurality of porous voluminal electrodes |
| 12/15/1987 | US4713160 Minimizing corrosion, controlling |
| 12/02/1987 | EP0247748A1 Dechlorination of aqueous alkali metal chloride solution |
| 11/10/1987 | US4705614 Central membrane to divide cell; gas collection headers, transition tube |
| 11/10/1987 | US4705564 Flow-through electrolytic cell |
| 10/27/1987 | US4702805 Continuous process; controlled sodium sulfate concentration in electrolytic sodium chloride cell |
| 10/13/1987 | US4699701 Electrochemical removal of chromium from chlorate solutions |
| 10/06/1987 | US4698144 Connecting each to holding tank to controll pressure before release |
| 09/15/1987 | US4693806 In situ electrolysis of brine |
| 09/03/1987 | DE3705862A1 Method of reducing the energy requirement of an electrolytic cell |
| 09/02/1987 | EP0234256A1 Process for carrying out HCl membrane electrolysis |
| 08/25/1987 | US4689133 Using a oxidant partial pressure control system |
| 08/25/1987 | US4689124 Flow-through electrolytic cell |
| 08/06/1987 | DE3603244A1 Safety device for electrolysis cells |
| 06/24/1987 | EP0226291A1 Method for extending service life of a hydrogen-evolution electrode |
| 06/10/1987 | EP0224790A1 Process for cleaning of cathodes in the electrolysis of alkalichlorides |
| 06/02/1987 | US4670114 Fine, uniform particles, and precipitation or depositing of particles from a solution |
| 05/27/1987 | CN86107523A Method for prolonging operating life of hydrogen-releasing electrode |
| 05/06/1987 | EP0220846A1 Electrolytic cell |
| 05/05/1987 | US4663004 Electrochemical conversion using alternating current and semiconductor electrodes |
| 05/05/1987 | CA1221402A1 Method and apparatus for operating a fuel cell in combination with an electrochemical cell to produce a chemical product |