| Patents for C01G 9 - Compounds of zinc (4,420) |
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| 08/04/1981 | US4282190 Process for the manufacture of iron and aluminum-free zinc chloride solutions |
| 08/04/1981 | US4282189 Precipitation of metal values from organic media |
| 08/04/1981 | US4282117 Calcining with an aluminum compound in presence of solid carbon |
| 07/28/1981 | US4280925 Ion exchanging with zinc sulfide |
| 07/14/1981 | CA1104838A1 Leaching of metal sulphides |
| 06/30/1981 | CA1103939A1 Hydrometallurgical process for the treatment of soluble silicate-bearing materials |
| 06/09/1981 | US4272397 Method of preparing flake-like ceramic particle of zinc sulfide phosphor |
| 06/09/1981 | CA1102525A1 Chlorides of lead, zinc, copper, silver and gold |
| 05/06/1981 | EP0028158A1 Methods and systems of removal of metals from solution and of purification of metals and purified solutions and metals so obtained |
| 04/28/1981 | US4264568 By contacting with gaseous chlorine or hydrogen chloride |
| 04/21/1981 | US4263451 Removing carbonaceous contaminant from zinc oxide |
| 04/21/1981 | US4263109 Reacting with silver, filtration |
| 04/14/1981 | US4261965 Precipitation of basic zinc sulfate by gradual addition of urea to aqueous solution |
| 04/07/1981 | CA1098719A1 Solvent extraction of non-ferrous metals from iron- containing solutions |
| 03/24/1981 | US4257914 Method for the regeneration of spent molten zinc chloride |
| 03/17/1981 | US4256722 Process for producing porous spinel materials |
| 03/17/1981 | CA1097507A1 Process of treating residues from the leaching of roasted zinc blende |
| 02/24/1981 | CA1096328A1 Plasma method of producing selective particle sized oxide, product produced thereby and apparatus therefor |
| 02/10/1981 | CA1095262A1 Method for the removal of ferric ions from a concentrated aqueous zinc solution |
| 02/03/1981 | US4248850 From basic metal compound and bromine, formaldehyde reducing agent |
| 01/27/1981 | CA1094293A1 Particulate zinc oxide shapes of high surface area and improved strength |
| 01/07/1981 | EP0021809A1 Chloride leaching |
| 12/23/1980 | CA1092084A1 Method and a reagent mixture for removing metal ions from an aqueous solution by means of liquid-liquid extraction |
| 12/16/1980 | US4239699 Sulfonamidophenols, metal complexes thereof, and solutions containing such compounds for use in extraction of metal values |
| 12/09/1980 | CA1091042A1 Solvent-extraction process for recovery and separation of metal values |
| 12/02/1980 | US4237062 Sulfonylthiosemicarbazides, metal complexes thereof, and solutions containing such compounds for use in extraction of metal values |
| 11/25/1980 | CA1090143A1 Method of recovering zinc from a material containing zinc and iron |
| 11/18/1980 | CA1089653A1 Selective recovery of nickel and cobalt or copper and zinc from solution |
| 11/11/1980 | CA1089196A1 Process of thermally treating solids |
| 10/21/1980 | US4229506 Piezoelectric crystalline film of zinc oxide and method for making same |
| 10/07/1980 | CA1086963A1 Process for the recovery of non-ferrous metals from acidic hydrometallurgical leach liquors with a chelate exchange resin |
| 09/02/1980 | US4220726 Polystyrene or copolymer; complexing |
| 08/26/1980 | CA1084505A1 Certain sulfonamidoquinolines, metal complexes thereof, and solutions containing such sulfonamidoquinolines and metal complexes |
| 08/20/1980 | EP0014557A1 Process for precipitating metal values from organic media |
| 08/19/1980 | CA1084178A1 Process for recovering zinc sulphide from zinc sulphide containing concentrates |
| 07/09/1980 | EP0013098A1 Removal of manganese ions from zinc and manganese containing solutions |
| 07/01/1980 | US4210759 Stripping metal values from hydrocarbon solvents |
| 06/24/1980 | US4209501 Chlorination of sulfides in a fused salt bath |
| 06/24/1980 | US4209419 Certain sulfonamidoquinolines, metal complexes thereof, and solutions containing such sulfonamidoquinolines and metal complexes |
| 06/03/1980 | US4206023 Zinc recovery by chlorination leach |
| 05/27/1980 | US4205117 Piezoelectric crystalline film of zinc oxide and method for making same |
| 05/13/1980 | US4202864 Geothermal |
| 04/29/1980 | US4200504 Hydrometallurgy |
| 04/22/1980 | CA1075912A1 Process for the purification of an aqueous solution of zinc sulphate |
| 04/15/1980 | CA1075636A1 Recovery of zinc from residual solutions of electroplating |
| 04/08/1980 | CA1075015A1 Process for working up manganese modules and recovery of the contained valuable constituents |
| 03/25/1980 | US4194905 Solvent-extraction process for recovery and separation of metal values |
| 03/18/1980 | US4193769 In a dispersant-containing fluid |
| 03/11/1980 | US4192852 Process for precipitating iron as jarosite with a low non-ferrous metal content |
| 03/11/1980 | US4192851 Leaching of metal sulphides |
| 03/11/1980 | CA1073216A1 Method of separating zinc and copper from aqueous solutions |
| 03/04/1980 | CA1072778A1 Transport system for analytical equipment |
| 02/19/1980 | CA1071837A1 Process for preparing metallic sulphates |
| 02/12/1980 | CA1071429A1 Method and apparatus for purification of aqueous zinc sulphate solution used in electrolytical production of zinc |
| 01/22/1980 | CA1070122A1 Process for manganese removal from metal bearing solutions |
| 11/27/1979 | US4176160 Rapidly washing a filter cake of solids obtained by treating a coasted iron-containing zinc ore with sulfuric acid |
| 11/20/1979 | CA1066658A1 Recovery of zinc |
| 10/09/1979 | CA1063794A1 Electrophotographic grade zinc oxide |
| 08/14/1979 | US4164676 Piezoelectric crystalline film of zinc oxide containing additive elements |
| 07/31/1979 | CA1059441A1 Continuous separation of solid metal impurities from zinc sulphate solutions |
| 07/10/1979 | US4160668 Electrophotographic grade zinc oxide |
| 05/29/1979 | US4156711 Process for the removal of impurities contained in a zinc and cadmium sulfate solution |
| 05/22/1979 | US4156050 Piezoelectric crystalline films and method of preparing the same |
| 05/08/1979 | CA1053914A1 Metal recovery from sulfate solutions |
| 04/17/1979 | CA1052585A1 Liquid ion exchange extraction of zinc |
| 04/10/1979 | US4148862 Hydrometallurgical treatment of soluble silicate-bearing zinc materials |
| 03/06/1979 | CA1049796A1 Process for the extraction of metal ions from an aqueous solution |
| 02/13/1979 | US4139678 Piezoelectric crystalline films and method of preparing the same |
| 02/06/1979 | CA1048176A1 Process for purifying aqueous solutions, of metal ions precipitating as arsenides, antimonides, tellurides, selenides, and tin and mercury alloys |
| 01/16/1979 | CA1046288A1 Purification of zinc sulphate solutions |
| 01/09/1979 | US4133865 Multistage; from the metal sulfide and ammonium sulfate; preventing agglomeration |
| 01/09/1979 | CA1045829A1 Process for zinc and silicium bearing materials to recuperate the zinc content |
| 12/05/1978 | US4128617 Treatment of zinc calcines for zinc recovery |
| 12/05/1978 | US4128493 Compositions useful in process for extraction of metal values from acidic solutions |
| 11/14/1978 | CA1042195A1 Process for the preparation of a panchromatically-sensitive zinc oxide |
| 11/07/1978 | US4124462 Solvent extraction |
| 10/31/1978 | US4123260 Chelating ion exchange resin having aminocarboxylic acid functional groups |
| 10/24/1978 | CA1040867A1 Separation of iron from zinc solutions or slurries |
| 10/10/1978 | CA1040325A1 Process of obtaining zinc oxide having improved filtering characteristics |
| 10/03/1978 | US4118458 Leaching with sulfur dioxide |
| 08/22/1978 | US4108744 Dialyzing, complexing with sodium chloride, ion exchanging |
| 08/22/1978 | US4108635 Solder skimmings recovery process |
| 08/22/1978 | US4108634 Using cyclone chamber |
| 08/15/1978 | US4107265 Treating residues from the leaching of roasted zinc blende |
| 08/08/1978 | US4105747 Method for dehydrating metal chlorides |
| 08/08/1978 | US4105743 Selectively extracting copper, zinc, nickel from a mixture of metal hydroxides |
| 07/11/1978 | US4100163 Substituted 8-sulfonamidoquinolines |
| 06/20/1978 | US4096233 Peroxymonosulfuric acid, precipitation |
| 03/07/1978 | US4078040 Method of employing elemental zinc for the purification of aqueous solutions of metallic salts |
| 02/14/1978 | US4073860 Heating, acidity, hydrogen sulfide |
| 01/31/1978 | US4071609 Method for preparing particulate zinc oxide shapes of high surface area and improved strength |
| 01/24/1978 | US4070260 Process of sulfuric acid leaching silicated zinc ores |
| 01/10/1978 | US4067789 Oxidation to manganese dioxide, precipitation |
| 11/15/1977 | US4058585 Solvent extraction of metals from acidic solutions with quaternary ammonium salts of hydrogen ion exchange agents |
| 07/05/1977 | US4033873 Filtration apparatus and pressure seal |
| 05/10/1977 | US4022579 Transport system for analytical equipment |
| 05/03/1977 | US4021199 Automatic cleaning apparatus for electrodes of pH meter |
| 04/19/1977 | US4018865 A-hydroxyoximes, sulfonic acids |
| 03/22/1977 | US4013783 Reacting zinc oxide, ammonia, and carbon dioxide |
| 03/22/1977 | US4013412 Method for judging purity of purified zinc sulphate solution used for electrolytic production of zinc |