| Patents for C25D 21 - Processes for servicing or operating cells for electrolytic coating (5,798) |
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| 10/30/1979 | US4172780 Electrolytic cells |
| 10/30/1979 | CA1065272A1 Treatment of dilute cyanide solutions |
| 10/17/1979 | EP0004841A2 Integrated process for treating waste water from anodisation plants |
| 10/16/1979 | US4171255 Apparatus for recovery of metals from metal plating baths and neutralizing toxic effluents therefrom |
| 09/25/1979 | CA1063063A1 Process and apparatus for removing metallic ions from an electrolytic solution |
| 09/11/1979 | US4167240 Method of treating an electroplating solution comprising ions of gold and cyanide prior to electroplating and thermocompression bonding |
| 08/21/1979 | US4165218 Monitoring surfactant in electrolyte during metal treatment |
| 08/14/1979 | US4164456 Electrolytic process |
| 08/07/1979 | US4163705 Apparatus for chemical and electrochemical treatment |
| 07/17/1979 | CA1058550A1 Electroplating recovery process |
| 06/05/1979 | CA1055879A1 Electrolyzer |
| 05/22/1979 | USRE30005 Method for the electrolytic recovery of metal employing improved electrolyte convection |
| 05/08/1979 | US4153521 Method of automatic control and optimization of electrodeposition conditions |
| 05/01/1979 | US4152221 Continuous spray process, pulsed electric current |
| 05/01/1979 | US4152220 Reacting aluminum with a hydrogen halide, or halogen and hydrogen halide |
| 04/10/1979 | US4148700 Method for purifying the liquor of a galvanizing process plant after contamination |
| 04/03/1979 | US4147610 Indicators and shutdown system for plating |
| 04/03/1979 | US4147605 Method of producing sols by electrodialysis |
| 03/20/1979 | US4145268 Method of conducting an electrolysis |
| 03/13/1979 | US4144149 Method for working up aqueous residues from metallizing baths |
| 03/13/1979 | US4144145 Process for recovery of reusable chromic acid from the waste chromic acid solution containing impurities |
| 03/13/1979 | CA1050478A1 Electrolytic cells |
| 03/06/1979 | US4142420 Method for electrically calibrating the output of pressure transducers |
| 01/30/1979 | US4137131 Process for electrolytic deposition of metals on zirconium materials |
| 01/16/1979 | US4134819 Arrangement for controlling the electric energy supply to an electroplating installation |
| 01/09/1979 | US4133757 Apparatus and method for continuous plating bath treatment system |
| 01/02/1979 | US4132605 Method for evaluating the quality of electroplating baths |
| 12/19/1978 | US4130473 Electrode structure for use in metal in exchange apparatus useful in purifying spent acids and the like |
| 12/19/1978 | CA1044782A1 Apparatus for electrolytically processing aluminium material |
| 12/05/1978 | CA1043732A1 Electrochemical cell |
| 11/28/1978 | US4127465 Film processing apparatus for the electrolytic recovery of silver |
| 11/14/1978 | US4125444 Electrochemical polishing method |
| 10/17/1978 | US4120771 Device for manufacturing substantially flat dies |
| 10/17/1978 | US4120759 Uniform ion concentration |
| 10/10/1978 | US4119501 Electroplating nickel using anodes of flattened nickel forms |
| 09/05/1978 | US4111772 Process for electrodialytically controlling the alkali metal ions in a metal plating process |
| 08/29/1978 | CA1037417A1 Process and apparatus for removal of contaminants from wastes |
| 08/22/1978 | US4108744 Dialyzing, complexing with sodium chloride, ion exchanging |
| 08/01/1978 | US4104148 Electroplating tank having electric rinse water heating system |
| 07/25/1978 | US4102756 Nickel-iron (80:20) alloy thin film electroplating method and electrochemical treatment and plating apparatus |
| 07/11/1978 | US4100065 Method for removing of multivalent heavy metals from metal plating waste effluents |
| 07/11/1978 | US4100036 Method of regulating cathode current density in an electroplating process |
| 03/28/1978 | US4081347 Apparatus for electroplating metal surfaces, in particular cut edges formed by stacking sheet metal panels cut to size |
| 03/21/1978 | US4080268 Electrodeposition |
| 03/07/1978 | US4077864 Electroforming anode shields |
| 02/28/1978 | US4076618 Treatment of liquids containing complexed heavy metals and complexing agents |
| 02/14/1978 | US4073964 Process for controlling metal thickness, and deposition and degradation rates |
| 02/14/1978 | US4073708 Apparatus and method for regeneration of chromosulfuric acid etchants |
| 01/31/1978 | US4071415 Method of electroplating aluminum and its alloys |
| 01/17/1978 | US4068677 Process control circuit for metal-depositing baths |
| 01/03/1978 | US4066515 Apparatus and method for the electrodepositing of aluminum |
| 12/27/1977 | US4065374 Method and apparatus for plating under constant current density |
| 10/25/1977 | US4055751 Process control system for the automatic analysis and regeneration of galvanic baths |
| 10/11/1977 | US4053400 Purification of nickel and cobalt electroplating solutions |
| 10/11/1977 | US4053383 Apparatus for electrodepositing aluminum |
| 10/04/1977 | US4052276 Treatment process for electrolytic purifying of used solution for electrolytic tin plating |
| 09/20/1977 | US4049530 Electrolyzer |
| 09/20/1977 | US4049519 Carbonate reduction |
| 08/30/1977 | US4045304 High speed nickel plating method using insoluble anode |
| 08/09/1977 | US4040933 Filter assembly for electrochemical machining apparatus |
| 08/09/1977 | US4040920 Chromium(vi)-containing; adding ferrous nitrate or chloride, neutralization with sodium hydroxide |
| 07/26/1977 | US4038169 Electroplating selected portions of a metallic strip |
| 07/26/1977 | US4038160 Method of regenerating a chromium electroplating bath |
| 07/19/1977 | US4036751 Method of treating water containing chromate |
| 06/21/1977 | US4030521 Method for liquid level control |
| 05/31/1977 | US4026781 Positive and negative current pulses |
| 04/26/1977 | US4019968 Electrochemical cell |
| 03/22/1977 | US4013412 Method for judging purity of purified zinc sulphate solution used for electrolytic production of zinc |
| 03/15/1977 | US4012318 Adjusting ph |
| 03/08/1977 | US4011152 System for autocontrolling and regulating the average value of the voltage applied to processes for the electrolytic coloring of anodized aluminum |
| 02/22/1977 | US4009101 Recycle treatment of waste water from nickel plating |
| 02/22/1977 | US4009091 Power source for an electroplating bath |
| 02/01/1977 | US4006072 Device for eliminating impure ions in chromium plating bath |
| 02/01/1977 | US4006071 Accumulator program for electroplating energy |
| 02/01/1977 | US4006067 Chromium, porous anode |
| 01/18/1977 | US4003804 Method of electroplating of aluminum and plating baths therefor |
| 12/07/1976 | US3996568 Arrangement for processing information on goods in process in an automatic electroplating plant |
| 12/07/1976 | US3996125 Apparatus for electrolytically processing aluminium material |
| 11/30/1976 | US3994796 Electrolytic plating apparatus for discrete microsized particles |
| 11/30/1976 | US3994787 Precipitation of ammonium ions with hexanitrocobaltate(iii) complex |
| 11/02/1976 | US3989624 Method and apparatus |
| 10/26/1976 | US3988215 Method for recording potential capacity of a formed foil in a continuous foil forming process |
| 10/12/1976 | US3985628 Pollution control in electroplating systems |
| 09/07/1976 | US3979267 Electrolytic method |
| 08/31/1976 | US3977951 Fluidized beds |
| 08/10/1976 | US3973987 Reverse osmosis |
| 07/13/1976 | US3969215 Process and apparatus for removing metallic ions from an electrolytic solution |
| 07/06/1976 | US3967632 Arrangement for the fluid treatment, especially etching, of objects in assembly-line-like fashion |
| 06/22/1976 | US3965005 Method and apparatus for evaporating and separating multiple component solutions or mixtures |
| 05/25/1976 | US3959114 Apparatus for arranging materials at uniform intervals |
| 05/25/1976 | US3959110 Apparatus for silver recovery |
| 05/25/1976 | US3959088 Method and apparatus for generating high amperage pulses from an A-C power source |
| 05/04/1976 | US3954569 Nickel sulfamate bath |
| 04/27/1976 | US3953306 Metal recovery from waste treatment sludges |
| 04/13/1976 | US3950250 Apparatus for purification of industrial waste water |
| 04/06/1976 | US3948747 Elimination or control of acid mists over electrolytic cells |
| 04/06/1976 | US3948738 Process for the regeneration of exhausted chromium-plating solutions by two-stage diaphragm electrolysis |
| 01/20/1976 | US3933601 Electroplating method and apparatus |