| Patents for C25D 21 - Processes for servicing or operating cells for electrolytic coating (5,798) |
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| 10/09/1991 | EP0449996A1 Method of electrolytic treatment and unit therefor |
| 10/09/1991 | CN1055207A Method for treating of waste water containing cyanogen and heavy metal ions |
| 10/08/1991 | CA1290396C Checking of electrodes with activating layers |
| 10/02/1991 | DE4017380C1 Washing-out bores in objects to be galvanised - by alternating increasing and lowering of pressure of cleaning or rinsing liq., flowing through |
| 09/24/1991 | US5051154 Copper salt, an electrolyte and an organic additive for modification of the charge transfer overpotential |
| 09/19/1991 | WO1991014025A1 Electrodeposition of lithium |
| 09/17/1991 | US5049286 Process for purification of nickel plating baths |
| 09/17/1991 | US5049246 Electroplating and polishing |
| 09/17/1991 | CA1288952C Metal recovery process |
| 09/12/1991 | DE4007297A1 Elektrolysezelle zur elektrolytischen behandlung von prozessfluessigkeit An electrolytic cell for the electrolytic treatment of prozessfluessigkeit |
| 09/11/1991 | EP0445120A1 Device for applying and/or removing coatings on workpieces. |
| 09/11/1991 | CN2084476U Measuring instrument for electroplating additive |
| 09/10/1991 | US5047128 Electrodialysis cell for removal of excess electrolytes formed during electrodeposition of photoresists coatings |
| 09/10/1991 | US5047126 Method for recovering metal from waste stream |
| 09/09/1991 | WO1991014026A1 Electrolytic cell for electrolysis of process liquid |
| 09/09/1991 | CA2076854A1 Electrolytic cell for electrolysis of process liquid |
| 09/08/1991 | CA2011743A1 Process for producing inert anode for use in copper recovery from copper-containing solution by electroplating |
| 09/05/1991 | DE4006751A1 Vollautomatische stromsteuerung fuer metallabreicherungszellen Fully automatic power control for metallabreicherungszellen |
| 09/04/1991 | WO1991014023A2 Fully automatic current control system for metal depletion cells |
| 09/04/1991 | CA2076759A1 Fully automatic current control system for metal depletion cells |
| 09/03/1991 | US5045162 Process for electrochemically regenerating chromosulfuric acid |
| 08/07/1991 | EP0440071A1 Plating process |
| 08/07/1991 | EP0440027A2 Additive for acid-copper electroplating baths to increase throwing power |
| 07/25/1991 | DE4001960A1 Zinc-nickel alloy electroplating of steel strip - with minimal carbon di:oxide entrainment on nickel carbonate addn. to electrolyte |
| 07/10/1991 | EP0436146A1 Process for the electrochemical regeneration of chromosulphuric acid |
| 07/09/1991 | US5029598 Process for the uniform introduction of a fluid, and apparatus for carrying out the process |
| 07/03/1991 | EP0434994A1 Process for rinsing the surface of workpieces treated in an aqueous activating solution and apparatus for performing the process |
| 07/02/1991 | CA1285521C Apparatus for discrete, laser assisted, electrolytic metal deposition on solidsubstrates |
| 06/18/1991 | US5024732 Method of and device for compensating variations of branch currents in electroplating baths |
| 06/13/1991 | WO1991008328A1 Process and device for dissolving high-purity zinc in an electrolyte |
| 06/05/1991 | EP0430917A1 Device for the electrolytic deposition of a continuous layer with a constant thickness |
| 06/04/1991 | US5021265 Roll arrangement for non-deforming treatment of moving web-type products |
| 06/02/1991 | WO1991008327A1 Process and device for controlling the flow of operations in electroplating plants |
| 05/21/1991 | US5017275 Electroplating cell anode |
| 05/16/1991 | DE3937765A1 Producing wear-resistant coating on light metal parts - using iron dispersion coating contg. silicon carbide |
| 05/08/1991 | CN1051206A Full-automatic electroplating waste water treatment technology with maximum energy-saving |
| 05/07/1991 | WO1991006693A1 Protection of lead-containing anodes during chromium electroplating |
| 05/02/1991 | EP0424807A1 Electroplating cell anode |
| 05/02/1991 | EP0424590A1 Electroplating apparatus |
| 04/24/1991 | CA2026584A1 Electroplating cell anode |
| 04/17/1991 | CN1012359B Method and apparatus for treating waste liquor of plating |
| 04/16/1991 | US5007993 Electrolytic processing apparatus and method with time multiplexed power supply |
| 04/04/1991 | WO1991004359A1 Improvements in or relating to the electrodeposition of zinc or zinc alloy coatings |
| 04/03/1991 | EP0420640A1 Process for electroplating and apparatus therefor |
| 03/26/1991 | US5002650 Demetallization of solutions by electrolysis, graphite electrodes, air sparging |
| 03/26/1991 | US5002645 Process of separating and recovering metal values from a waste stream |
| 03/06/1991 | EP0415119A2 Process for continuously removing and recovering complexing compounds from process water |
| 02/06/1991 | EP0411599A1 Apparatus for rinsing electroplated articles |
| 01/31/1991 | DE4023444A1 Cyanide-free copper plating process - where a portion of the plating bath is electrolysed by an independently-controlled insol. anode to reduce bath impurities |
| 01/10/1991 | WO1991000380A1 Electrolytic processing apparatus and method with time multiplexed power supply |
| 12/13/1990 | WO1990015171A1 Process for electroplating metals |
| 12/05/1990 | CN1047540A Plating system |
| 12/04/1990 | CA1277370C Method of measuring the effective inhibitor concentration during a deposition of metal from aqueous electrolytes and an apparatus therefor |
| 11/30/1990 | CA2016031A1 Process for electroplating metals |
| 11/28/1990 | EP0362240A4 Controlling processes for the electrolytic recovery of metals |
| 11/22/1990 | EP0398735A2 Plating system |
| 11/22/1990 | EP0398534A1 Method for manufacturing one-side electroplated steel sheet |
| 11/19/1990 | CA2017011A1 Plating system |
| 11/15/1990 | DE3939694A1 Dissolving high purity zinc in electrolyte - has atomised zinc in lower part of vessel meeting electrolyte fed from above through porous layer and then falling to vessel bottom |
| 11/01/1990 | WO1990012759A1 Method of electrolytic treatment and unit therefor |
| 10/24/1990 | EP0393520A1 Process for the uniform introduction of a fluid and device for carrying out this process |
| 10/23/1990 | US4964964 Electroplating apparatus |
| 10/21/1990 | CA2015007A1 Process for the uniform introduction of a fluid, and apparatus for carrying out the process |
| 10/16/1990 | US4963244 Test cell for identifying deactivated surface areas of an electrode |
| 09/19/1990 | EP0388386A1 Process and apparatus for continuously electroplating a zinc layer on a steel strip |
| 09/19/1990 | EP0387526A1 Apparatus for the electrolytic treatment of work-pieces through a succession of baths |
| 09/17/1990 | CA2012359A1 Apparatus for galvanizing material ready for treatment |
| 08/29/1990 | CN1044962A Drainadge-less electroplating technology |
| 08/28/1990 | US4952290 Waste water treatment and recovery system |
| 08/23/1990 | DE3905100A1 Method and appliance for electrolyte exchange especially in narrow recesses of large-area workpieces |
| 08/22/1990 | EP0383729A1 A system for fixing anodized aluminium |
| 08/14/1990 | US4948489 Precipitation of heavy metal oxides; controlling water pollution |
| 08/09/1990 | DE3903696A1 Apparatus for applying and/or removing coatings on workpieces |
| 07/25/1990 | EP0379289A2 Fixture and a method for plating contact bumps for integrated circuits |
| 07/25/1990 | CN1044133A Method for preventing plating chromic electrolyte atomizing |
| 07/11/1990 | CN2059167U Chromic acid waste gas recovering device for washing chromic spray net grate system |
| 07/04/1990 | EP0375993A1 Process and apparatus for recovering the enamel slurry in an electrophoretic-enamelling installation |
| 07/03/1990 | US4939370 Method of and device for inspecting and/or controlling metallization processes |
| 06/12/1990 | US4933061 Electroplating tank |
| 06/12/1990 | US4933051 Improved resistance to degradation |
| 06/05/1990 | US4931149 Fixture and a method for plating contact bumps for integrated circuits |
| 05/31/1990 | WO1990005801A1 Device for applying and/or removing coatings on workpieces |
| 05/23/1990 | EP0369103A1 Testing of electrodes with active layers |
| 05/15/1990 | CA1268988A1 Industrial exhaust ventilation system |
| 04/24/1990 | US4919774 Controlling current ratio in electrolytic current by using auxiliary electrode; surface roughening metal web |
| 04/24/1990 | US4919766 Inspection of electrodes having activated layers |
| 04/24/1990 | CA1268191A1 Lock for loading and unloading goods into a treatment apparatus having a protective atmosphere |
| 04/19/1990 | WO1990004051A1 Electroplating process and apparatus |
| 04/19/1990 | WO1990004049A1 Process for improving wear on conductor rolls in electroplating of steel surfaces |
| 04/14/1990 | CA2000492A1 Electroplating process and apparatus |
| 04/11/1990 | EP0362240A1 Controlling processes for the electrolytic recovery of metals |
| 04/10/1990 | US4915796 Electroplating process |
| 04/10/1990 | CA1267631A1 Trivalent chromium electrolyte and process employing vanadium reducing agent |
| 03/15/1990 | DE3830237A1 Process and apparatus for recovering residual quantities of treatment solutions adhering to mass-produced articles in dip drums |
| 03/08/1990 | DE3829515A1 Method for treating the surfaces of workpieces in aqueous liquids |
| 03/07/1990 | EP0356516A1 Device for applying galvanic coatings |
| 03/06/1990 | US4906346 Electroplating apparatus for producing humps on chip components |
| 03/06/1990 | US4906340 Process for electroplating metals |
| 02/28/1990 | CN2053542U Remnant liquid recovering device |
| 02/28/1990 | CN1040016A Method and apparatus for treating waste liquor of plating |