| Patents for C25D 21 - Processes for servicing or operating cells for electrolytic coating (5,798) |
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| 02/14/1990 | EP0354891A1 Method and device for regenerating a solution for the electrolytic deposition of iron |
| 02/13/1990 | US4900406 Method of electrolytic metal coating of a strip-shape metal substrate and apparatus for carrying out the method |
| 01/31/1990 | EP0352721A2 Process for galvanically metallizing a substrate |
| 01/23/1990 | US4895659 Method for metal and cyanide recovery from plating baths and rinse waters |
| 01/23/1990 | US4895627 Ion exchange membrane |
| 01/03/1990 | CN2050430U Mixing treament apparatus for plating waste water |
| 01/02/1990 | US4891103 Uniform porosity in semiconductors |
| 12/27/1989 | EP0347603A2 Process for regenerating zinc sulfate solutions |
| 12/27/1989 | CN1006240B Conversion method of cyanide-containing silver plating solution to cyanide-free |
| 12/26/1989 | US4890215 Electrical apparatus with reverse audible alarm |
| 12/20/1989 | EP0346981A1 Method of electrolytic metal coating of a strip-shape metal substrate and apparatus for carrying out the method |
| 12/12/1989 | US4886590 Chemical process control system |
| 11/14/1989 | US4880511 Electrodialysis, reverse osmosis |
| 10/31/1989 | US4876801 Method and means for drying bulk goods |
| 10/25/1989 | EP0338356A1 Time-current and time-potential measurements for controlling and regulating galvanic copper deposition |
| 10/24/1989 | US4876287 Selective ion-complexing media for the removal of metal-ion contaminants from plating baths |
| 10/03/1989 | US4871435 Electroplating apparatus |
| 09/08/1989 | WO1989008157A1 Device for applying galvanic coatings |
| 09/06/1989 | CN1035327A Electroplate technology |
| 09/05/1989 | US4863612 Apparatus and method for recovering materials from process baths |
| 08/22/1989 | US4859291 Method of performing industrial low hydrogen embrittlement nickel plating by use of an insoluble anode |
| 07/12/1989 | CN1004763B Huge plating bath of the electroplating iron-radical combined plating |
| 07/05/1989 | CN1004713B Treatment for rinsig waste water from low chromium passivating process during zinc plating |
| 06/20/1989 | US4840712 Process for improving wear on conductor rolls in electroplating of steel surfaces |
| 05/30/1989 | US4834842 Method of measuring the effective inhibitor concentration during a deposition of metal from aqueous electrolytes and test apparatus therefor |
| 05/24/1989 | EP0316598A1 Method and apparatus for controlling and/or monitoring a metal-plating process |
| 05/24/1989 | CN1033079A Electroplating method for metal |
| 05/23/1989 | US4832812 Reuse of electrolyte |
| 05/03/1989 | CN2036957U Electricity-saving device for automatic roll-plating machine |
| 03/29/1989 | EP0308636A2 Method for matching the component currents in an electrolytic bath |
| 03/15/1989 | EP0307161A2 Process for electroplating metals |
| 03/07/1989 | US4810337 Method of treating a chromium electroplating bath which contains an alkyl sulfonic acid to prevent heavy lead dioxide scale build-up on lead or lead alloy anodes used therein |
| 02/28/1989 | US4808277 Method for the continuous electrolytic plating of a metal strip with a metallic plating layer |
| 02/21/1989 | US4806223 Electrolytic processing cell |
| 02/16/1989 | DE3725924A1 Method for processing metal-containing rinse waters, especially rinse waters from electroplating |
| 01/31/1989 | CA1249566A1 Selective and continuous removal of metal-ion contaminants from plating baths |
| 12/29/1988 | DE3719941A1 Device for testing electroplating baths |
| 12/28/1988 | CN88219563U Far-infrared heater for electroplating liquid trough |
| 12/28/1988 | CA1247553A Purifying mixed-cation electrolyte |
| 12/13/1988 | US4790904 Plating evaporative recovery tank |
| 12/07/1988 | EP0294001A1 Process for measuring the effective inhibitor concentration during metal deposition from aqueous electrolytes |
| 12/07/1988 | EP0293966A1 Method for the continuous electrolytic plating of a metal strip with a metallic plating layer |
| 12/06/1988 | US4789440 Process and apparatus for the continuous electrolytic treatment and/or coating of a moving metallic strip while changing the spacing between the strip and at least one electrode |
| 12/06/1988 | US4789439 Circulating elecrrolyte through replenishing cell containing tin particles to maintain concentration of stannous hydroxide |
| 12/01/1988 | WO1988009400A1 Controlling processes for the electrolytic recovery of metals |
| 11/30/1988 | CN88102223A Composition and maintainance of etchingless iron-plating liquid |
| 11/30/1988 | CN87103367A Dynamic measuring method and apparatus of coating or plating thickness |
| 11/08/1988 | US4783249 Continuous flow of fresh water reduced by parallel path to ion exchanger; recirculation |
| 11/08/1988 | CA1244376A1 Trivalent chromium electrolyte and process |
| 11/01/1988 | US4781811 Device for feeding gas into a liquid |
| 11/01/1988 | US4781806 Electroplating system |
| 10/19/1988 | EP0286880A1 Drying apparatus for bulk material |
| 10/18/1988 | US4778572 Process for electroplating metals |
| 09/28/1988 | EP0283681A1 Apparatus for bump-plating chips |
| 09/27/1988 | US4773979 Equipment for purifying gases and liquids |
| 09/27/1988 | US4773941 Method and device for washing porous workpieces in an impregnation process |
| 09/14/1988 | CN87107414A Microprocessor control system of electroplating technology and parameter |
| 08/23/1988 | US4765878 Plating current automatic compensating apparatus |
| 08/23/1988 | US4765872 Reducing iron using cathode with low hydrogen overvoltage |
| 08/02/1988 | US4761213 Treatment facility particularly for printed circuit boards to be treated while in a horizontal plane |
| 07/26/1988 | US4759831 Using aprotic, oxygen and water-free organic aluminum electrolyte |
| 07/26/1988 | CA1239615A1 Treatment of ultrafiltrate by electrodialysis |
| 07/12/1988 | CA1239208A1 Metal treating process control |
| 07/06/1988 | CN87106954A Roller mechanim for free deformation treatment of moving belt product |
| 06/22/1988 | CN87210076U Automatic spray shower for plating parts |
| 06/08/1988 | EP0270100A2 Electrolytic processing cell |
| 06/07/1988 | US4749460 Reduction of plating thickness variation at change in number of energized cells |
| 06/01/1988 | EP0268823A2 Method of electrolytic tinning using an insoluble anode |
| 06/01/1988 | CN87210337U Heater for electroplating solution of cyclic filtering |
| 05/31/1988 | CA1237381A1 Electrodialytic conversion of multivalent metal salts |
| 05/24/1988 | US4746414 Waste and pollution reduction |
| 05/24/1988 | US4746410 Current collecting assembly for a rotatable body |
| 05/10/1988 | CA1236527A1 Stress monitoring apparatus for use in electroforming and electroplating processes |
| 05/04/1988 | EP0265887A2 Method for treating a plating solution |
| 04/19/1988 | CA1235383A1 Electrolytically treating metal web with asymmetric alternating current |
| 04/13/1988 | EP0263334A2 Roller arrangement for the non-deformable treatment of moving sheet material |
| 04/05/1988 | US4735700 Process and apparatus for the continuous electrolytic treatment and/or coating of a moving metallic strip whilst changing the spacing between the strip and at least one electrode |
| 02/23/1988 | US4726884 Rotation, vibration substrate |
| 02/16/1988 | US4725339 Rotating disk electrode, varying current levels and ion concentrations; calibration |
| 02/10/1988 | EP0255669A1 Process and installation for the dip-coating of objects with liquid coatings and subsequent rinsing using an ultrafiltrate |
| 02/03/1988 | EP0254961A1 Treatment apparatus, particularly for printed-circuit boards moving horizontally |
| 01/20/1988 | EP0253394A1 Apparatus for current supply to horizontally transported material for galvanizing |
| 01/07/1988 | EP0251272A1 Electrodeposition device, particularly for aluminium |
| 12/23/1987 | CN87102036A Treatment for rinsig waste water from low chromium passivating process during zinc plating |
| 12/22/1987 | US4714010 Industrial exhaust ventilation system |
| 12/08/1987 | US4711704 Electrolysis |
| 12/01/1987 | US4710224 Flowing hydrazine and inert gas into bath; copper deposition |
| 11/25/1987 | EP0246494A1 Process for supplying additives to electroplating baths by polarography |
| 11/19/1987 | EP0246070A1 Process and apparatus for recovery of precious metal compound |
| 11/04/1987 | EP0243764A2 Device for introducing gases |
| 10/27/1987 | US4702838 Contacting with oxime or phosphoric acid ester complexing agents |
| 10/21/1987 | EP0242337A1 Apparatus for the continuous purification of electrolytes |
| 10/13/1987 | US4699694 Process and device for regulating the quantity of metal electrolytically deposited on a continuously travelling band |
| 09/30/1987 | EP0239559A2 Process and apparatus for the continuous electrolytic treatment or coating of a moving metal strip with regulation of the distance between the strip and at least one electrode |
| 09/29/1987 | US4696729 Uniform thickness |
| 09/24/1987 | DE3613583A1 Process and device for the reduction of acid mists in electrolysis |
| 09/22/1987 | CA1227164A1 Drop collector for an apparatus for conveying electrodes |
| 09/15/1987 | CA1226848A1 Apparatus and method for plating metallic strip |
| 09/10/1987 | DE3607097A1 Method for the surface treatment of metallic or nonmetallic workpieces in processing solutions containing ions |
| 09/02/1987 | EP0234827A2 Metal recovery process |