| Patents for C25B 13 - Diaphragms; Spacing elements (2,681) |
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| 03/31/1994 | WO1994007274A1 Ion exchange membrane having increased efficiency in proton exchange processes |
| 03/31/1994 | CA2143211A1 Ion exchange membrane having increased efficiency in proton exchange processes |
| 03/15/1994 | CA1327773C Electrolyzer with filament spacing for diaphragm and electrodes |
| 03/01/1994 | US5290405 NaOH production from ceramic electrolytic cell |
| 02/22/1994 | US5288384 Wetting of diaphragms |
| 01/15/1994 | CA2100416A1 Process and material for treatment and repair of electrolytic cell separators |
| 01/06/1994 | WO1994000502A1 Polymers of haloperfluoro and perfluoro ethers |
| 01/06/1994 | CA2137564A1 Polymers of haloperfluoro and perfluoro ethers |
| 12/29/1993 | EP0575807A1 Sulphonated polyetherketones |
| 12/22/1993 | EP0574791A2 Polymer electrolyte membrane and process for its manufacture |
| 11/30/1993 | US5266350 Slurrying talc, surfactants and polymer then heating |
| 11/23/1993 | US5264508 Polymers of haloperfluoro and perfluoro ethers |
| 11/23/1993 | US5264100 Fluorine-containing cation exchange membrane for electrolysis having a protruding porous base reinforcing material on one side thereof |
| 11/16/1993 | US5262250 Fuel cell, controlling wetness of solid electrolyte |
| 11/02/1993 | US5258106 Quaternized ion exchange membranes |
| 10/28/1993 | WO1993016217A3 Separators for electrolytic cells and processes for making |
| 10/26/1993 | US5256503 Expoxing to ultraviolet radition porous matrix membrane having pores filled with polymerizable material and photoinitiator |
| 10/20/1993 | EP0565962A2 Electrolysis method using polymer additive for membrane cell operation |
| 10/12/1993 | US5252193 Controlled depth abrasion of fluorinated ion exchange membrane having woven reinforcement of both permanent and sacrificial fibers for exposure of fiber intersections |
| 09/08/1993 | EP0559400A2 Sodium hydroxide production from electrolytic cell with ceramic membrane |
| 09/02/1993 | WO1993016966A1 Compositions, methods, and apparatus for separating oxygen from a gaseous mixture |
| 08/19/1993 | WO1993016217A2 Separators for electrolytic cells and processes for making |
| 08/05/1993 | WO1993015529A1 Preparation of a membrane and its use in an electrochemical cell |
| 07/07/1993 | EP0549670A1 Polymer membrane. |
| 06/29/1993 | CA1319474C Process and apparatus for manufacturing diaphragms |
| 06/09/1993 | EP0545068A2 Wetting of diaphragms |
| 06/01/1993 | CA1318487C Method for bonding a porous metal layer to a cermet surface |
| 05/18/1993 | US5211827 Electrochemical cell with ionic semiconductor separator |
| 05/18/1993 | CA1317711C Ion-permeable diaphragms for electrolytic cells |
| 04/20/1993 | US5203978 Ion exchange membrane, cathode layer and intermediate layer of inorganic solid particles and ionic conductivie polymer binder |
| 04/06/1993 | CA1315734C Combination seal and tentering means for electrolysis cells |
| 03/30/1993 | US5198162 Microporous films |
| 03/30/1993 | CA1315239C Solid polymer electrolyte electrode |
| 03/30/1993 | CA1315234C Producing an alkali metal hydroxide in electrolytic cell with perfluorocarbon membrane |
| 03/24/1993 | EP0500743A4 Ceramic solid electrolyte based electrochemical oxygen concentrator cell and method of fabrication |
| 03/24/1993 | CN1070202A Polymeric sheet |
| 03/09/1993 | US5192473 Method of making non-organic/polymer fiber composite |
| 03/09/1993 | US5192401 PTFE impregnated with zirconia and refractory particle coating |
| 02/23/1993 | US5188712 Diaphragm for use in chlor-alkali cells |
| 02/16/1993 | US5187032 Ionic salt in three-dimensional crosslinked polyvinyl ether |
| 02/16/1993 | US5186805 Electrolytic dispensing device |
| 01/21/1993 | WO1993001622A1 Polymeric sheet |
| 01/13/1993 | EP0522382A1 Apparatus and process for electrochemically decomposing salt solutions to form the relevant base and acid |
| 01/13/1993 | CN1067931A Process and apparatus for electrochemically decomposing salt solutions to form relevant base and acid |
| 01/07/1993 | WO1993000460A1 Apparatus and process for electrochemically decomposing salt solutions to form the relevant base and acid |
| 01/07/1993 | CA2112100A1 Apparatus and process for electrochemically decomposing salt solutions to form the relevant base and acid |
| 12/23/1992 | CN1019590B High-efficient electrolytic apparatus for producing hydrogen and oxygen |
| 12/16/1992 | EP0518349A1 Mixture of cyan and yellow dyes to form a green hue for color filter array element |
| 12/01/1992 | US5168005 Multiaxially reinforced membrane |
| 11/03/1992 | CA1309802C Ionic semiconductor materials and applications therefor |
| 10/21/1992 | CN1065496A Fluorine-containing cation exchange membrane for electrolysis |
| 10/07/1992 | EP0507235A2 Fluorine-containing cation exchange membrane for electrolysis |
| 09/22/1992 | US5149403 Fluorine-containing cation exchange membrane for electrolysis and process for producing alkali metal hydroxide by using the same |
| 09/15/1992 | US5147844 Polymeric image receiving layer, having a thermally transferred image of a repeating pattern thereon, on a support |
| 09/15/1992 | CA1307493C Woven pvc diaphragm to be used for the electrolysis of hydrochloric acid and method for producing the same |
| 09/02/1992 | EP0500743A1 Ceramic solid electrolyte based electrochemical oxygen concentrator cell and method of fabrication. |
| 08/19/1992 | EP0499593A1 Structure of electrochemical cell for wetting diaphragm of solid polymer electrolyte |
| 08/12/1992 | EP0263159B1 Composite membrane |
| 08/05/1992 | EP0497727A1 Electrolytic dispensing device |
| 07/28/1992 | US5133843 Platinum Group Metals, Aqua Regia |
| 07/22/1992 | EP0470070A4 A submerged electrolytic cell pool purifier |
| 07/09/1992 | DE4200009A1 Liq.-permeable fibrous diaphragm for chlor-alkali cells - has zirconium di:oxide deposited within fibre matrix |
| 07/07/1992 | US5128014 Irradiation of cation exchange membranes |
| 07/04/1992 | CA2057988A1 Diaphragm for use in chlor-alkali cells |
| 07/04/1992 | CA2057805A1 Diaphragm for use in chlor-alkali cells |
| 07/01/1992 | EP0492612A2 Electrolyzer and method of operating same |
| 07/01/1992 | CN1062382A Fluorine-containing cation exchange membrane and its use in electrolysis |
| 06/27/1992 | CA2058527A1 Electrolyzer and method of operating same |
| 06/09/1992 | CA1302802C Process for treatment of separator for sodium hydrosulfite membrane cell |
| 05/26/1992 | CA1301834C Cell arrangement for a filter press type stack of cells and method for producing the arrangement |
| 05/20/1992 | CN1016702B Dredging agent for solid pipeline |
| 05/19/1992 | US5114326 Apparatus for manufacturing diaphragms |
| 05/12/1992 | US5112463 Apparatus for water electrolysis |
| 04/08/1992 | CN1016189B Ion membrane electrolytic process for producing concentrated caustic |
| 04/02/1992 | WO1992005595A1 Polymer membrane |
| 04/01/1992 | EP0477432A1 Fluorine-containing cation exchange membrane for electrolysis and process for producing alkali metal hydroxide by using the same |
| 03/21/1992 | CA2090970A1 Polymer membrane |
| 03/10/1992 | US5094895 Composite, porous diaphragm |
| 03/03/1992 | US5092977 Fluoropolymer binder, dispersion of oxyhydroxide gel |
| 02/25/1992 | US5091252 Non-organic/polymer fiber composite and method of making same |
| 02/12/1992 | EP0470186A1 A composite, porous diaphragm |
| 02/12/1992 | EP0470070A1 A submerged electrolytic cell pool purifier. |
| 02/11/1992 | US5087345 Cation exchange membrane having high stability |
| 02/04/1992 | US5085754 Cation exchange membrane having high durability with diffusion coating on marginal areas of the membrane |
| 01/07/1992 | CA1293952C Method for forming a solid polymer electrolyte structure by pressing catalyst into membrane |
| 01/07/1992 | CA1293951C Porous diaphragm for electrochemical cell |
| 01/02/1992 | DE4117391A1 Asbestos-free microporous diaphragms for chlor:alkali cells - made from mixt. of non-modified PTFE and highly functionalised PTFE as hydrophilising agent |
| 10/29/1991 | CA1291304C Process for obtaining a microporous material |
| 10/18/1991 | CA2040334A1 Sealant for electrochemical cells |
| 10/10/1991 | DE4108483A1 Diaphragm of short and long fibre fluoro-polymer modified asbestos - giving stable operating parameters e.g. in alkali chloride electrolysis |
| 10/08/1991 | US5055171 Nonporous solid composite encapsulating metallic electrode |
| 10/02/1991 | EP0449071A1 Process for the electrochemical separation of alkali-sulphates |
| 09/25/1991 | EP0447447A1 Fabric reinforced composite membrane |
| 09/24/1991 | CA2038830A1 Electrolysis of alkali metal sulfates |
| 09/24/1991 | CA1289506C Gravity flow in electrolysis with perforated electrodes |
| 09/24/1991 | CA1289423C Consolidated microporous material, process for producing same, and its uses,namely for making cathode elements |
| 09/03/1991 | US5045162 Process for electrochemically regenerating chromosulfuric acid |
| 08/13/1991 | CA1287599C Membrane unit for electrolytic cell |
| 07/10/1991 | EP0436146A1 Process for the electrochemical regeneration of chromosulphuric acid |
| 06/11/1991 | US5023127 Microporous composites and electrolytic applications thereof |