| Patents for C22B 58 - Obtaining gallium or indium (821) |
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| 11/07/1989 | CA1262635A1 Method for recovering gallium |
| 10/04/1989 | EP0335147A1 Process and apparatus for manufacturing of galliumchloride from gallium-containing compounds |
| 09/27/1989 | EP0334730A1 Process for the liquid-liquid extraction of gallium from basic aqueous solutions using an organic phase |
| 08/08/1989 | US4855114 Using hydroxyquinoline |
| 07/04/1989 | US4844808 Liquid/liquid extraction of gallium values |
| 06/01/1989 | WO1989004878A1 Process for hydrometallurgical treatment of a solution of galliferous substances |
| 06/01/1989 | WO1989004877A1 Process for hydrometallurgical treatment of an indium chloride solution |
| 05/31/1989 | EP0318384A1 Hydrometallurgical treatment of indium chloride-containing solutions |
| 05/31/1989 | EP0318383A1 Hydrometallurgical treatment of gallium-containing solutions |
| 05/09/1989 | US4828608 Small diameter stream of liquefied metal, high vacuum heating to vaporize volatiles |
| 04/26/1989 | CN1032554A Process for recovtry of gallium using liquid-liquid extraction |
| 03/29/1989 | EP0309312A1 Process for the recuperation of gallium by liquid-liquid extraction |
| 03/15/1989 | CN1031720A Indium recovery technology from ferrous solution with high-indium content |
| 03/14/1989 | US4812167 Drying, aggregation, calcination, vacuum thermal cracking |
| 02/21/1989 | US4806249 Process for the separation of indium from anidic solutions containing it |
| 01/04/1989 | EP0297998A1 Process for extracting and purifying gallium from Bayer liquors |
| 12/21/1988 | CN88103282A Method for extractting and purifying gallium from bayer-liquid |
| 12/06/1988 | US4789446 Method of processing residues from the hydrometallurgical production of zinc |
| 10/05/1988 | EP0285055A2 Process for recovery of gallium by chelate resin |
| 06/22/1988 | EP0271845A1 Process for recovering gallium trichloride from gallium-containing waste |
| 05/11/1988 | CN87106967A Extract ga from bar solution using soaking and adsorbing resin |
| 04/27/1988 | EP0265356A1 Extraction of gallium from Bayer solutions using an impregnated adsorbing resin |
| 04/13/1988 | EP0263539A1 Process for treating zinc hydrometallurgy residues |
| 03/02/1988 | EP0258146A1 Process for recovering the gallium contained in a sodium aluminate solution |
| 03/01/1988 | US4728505 Leaching in presence of oxidizer |
| 02/25/1988 | WO1988001307A1 Method for the recovery of gallium contained in a sodium aluminate solution |
| 02/23/1988 | CA1233026A1 Process for eluting indium from a chelate resin containing adsorbed indium |
| 02/16/1988 | US4725414 Roasting, leaching, filtration, separation |
| 02/09/1988 | US4724129 Method of recovering gallium from very basic solutions by liquid/liquid extraction |
| 12/16/1987 | EP0249520A1 Process for recovering indium, germanium and/or gallium using ion exchangers containing phosphonic groups |
| 08/11/1987 | US4686031 Beneficiation of gallium in fly ash |
| 07/07/1987 | US4678647 Process for the recovery of gallium and germanium from coal fly ash |
| 05/19/1987 | US4666575 Method of recovering gallium from scrap containing gallium |
| 05/13/1987 | EP0221760A2 Method for recovering metal values from mixed-metal aqueous solutions by selective phosphate precipitation |
| 04/22/1987 | EP0219213A2 Method of recovering gallium from scrap containing gallium |
| 03/03/1987 | CA1218529A1 Method of selective separation and concentration of gallium and/or indium from solutions containing low levels of them and high levels of other metal ions |
| 02/17/1987 | US4643110 Direct fuel-fired furnace arrangement for the recovery of gallium and germanium from coal fly ash |
| 01/27/1987 | US4639355 Process for recovering gallium from aluminum smelting dust |
| 12/30/1986 | EP0206081A1 Recovery of gallium |
| 12/23/1986 | US4631177 Absorption on polymer containing quinolinol, then elution |
| 12/23/1986 | CA1215544A1 Process for separating gallium and indium from aqueous solutions |
| 11/18/1986 | CA1214045A1 Process for the recovery of indium and tin |
| 11/12/1986 | CN85103711A Extraction of gallium from strongly basic sodium aluminate solution |
| 09/30/1986 | CA1212077A1 Process for producing metallic gallium |
| 09/24/1986 | CN85102460A Electrolysis-crystalization method for producing high purity gallium |
| 07/30/1986 | CN85100163A Method of extracting gallium from dissociation mother liquor from the production of alumina |
| 01/21/1986 | US4565673 Using a halogen-free acid followed by a halogen-containing solution for selective separation from other metals |
| 10/08/1985 | CA1194699A1 Method for recovery of gallium |
| 07/10/1985 | EP0148158A2 Process for eluting indium from a chelate resin containing adsorbed indium |
| 06/25/1985 | US4525333 Process for separating gallium and indium from aqueous solutions |
| 06/04/1985 | CA1188105A1 Process for the recovery of indium from lead- containing materials |
| 05/14/1985 | US4517096 Method of selective separation and concentration of gallium and/or indium from solutions containing low levels of them and high levels of other metal ions |
| 10/09/1984 | US4475993 Extraction of trace metals from fly ash |
| 09/11/1984 | CA1174054A1 Recovery of indium in conjunction with the removal of cadmium, zinc and copper from lead, copper and zinc smelter or refinery dusts |
| 08/28/1984 | US4468374 Method for recovery of gallium |
| 08/14/1984 | CA1172426A1 Process for the purification of a gallium solution using liquid-liquid extraction with alcohols |
| 04/25/1984 | EP0106117A1 Process for the separation of gallium and indium from aqueous solutions |
| 04/24/1984 | CA1165977A1 Purification process for gallium solutions |
| 04/17/1984 | CA1165534A1 Process for purifying a gallium solution by liquid/ liquid extraction using quaternary ammonium salts |
| 03/20/1984 | US4438078 Forming the oxalate of gadolinium, precipitation, pyrolysis; elution of filtrate, precipitation of oxalate, pyrolysis |
| 01/03/1984 | CA1159652A1 Semiconductor materials |
| 12/20/1983 | US4421615 Process for producing metallic gallium |
| 10/18/1983 | US4410357 Method of purifying indium |
| 09/13/1983 | US4404174 Purification of solutions of gallium values by serial ion exchange-liquid/liquid extraction |
| 06/21/1983 | CA1148366A1 Process for purifying low-melting metals from impurities |
| 05/24/1983 | CA1146762A1 Recovery process for indium |
| 05/24/1983 | CA1146761A1 Treatment for rare earthes and gallia oxides mixtures |
| 04/13/1983 | EP0076404A1 Method for recovery of gallium |
| 04/06/1983 | EP0076163A2 Process for producing metallic gallium |
| 02/08/1983 | US4372923 Quaternary ammonium chloride extractant |
| 02/08/1983 | US4372922 Process for the recovery of indium |
| 01/18/1983 | US4369166 Purification of solutions of gallium values by liquid/liquid extraction |
| 01/11/1983 | CA1139084A1 Indium extraction process |
| 12/07/1982 | US4362560 Decomposition of gallium-arsenic semiconductor waste, arsenic sublimation and condensation, hydrochemical treatment |
| 12/01/1982 | EP0021990B1 Process for treating mixtures of rare earth oxides and gallium oxides |
| 11/23/1982 | CA1136086A1 Electrolytic extraction of gallium from alkali metal aluminate including two-stage carbonatation |
| 10/05/1982 | CA1132802A1 Process for recovering gallium |
| 08/10/1982 | CA1129211A1 Recovery and separation of gadolinium and gallium |
| 07/13/1982 | US4339302 Semiconductor materials |
| 06/29/1982 | CA1126683A1 Recovery of gallium from alkali metal aluminate by liquid alloy treatment and electrolysis |
| 06/23/1982 | EP0054461A1 Process for purifying gallium solutions |
| 06/16/1982 | EP0053971A1 Process for purifying a gallium solution by liquid-liquid extraction |
| 02/09/1982 | CA1117767A1 Process for liquid/liquid extraction recovery of gallium contained in very basic solutions |
| 08/11/1981 | CA1106614A1 Process for the separation of gallium |
| 07/28/1981 | US4280980 Protection from melting |
| 06/03/1981 | EP0029756A1 Process and device for handling and/or storing gallium in the metallic state |
| 04/21/1981 | CA1099522A1 Method of recovering gallium from very basic solutions by liquid/liquid extraction |
| 03/25/1981 | EP0025668A1 Process for purifying group III elements and epitaxial growth of semiconductor compounds |
| 01/27/1981 | CA1094328A1 Recovery of gallium from gallium compounds |
| 01/07/1981 | EP0021990A1 Process for treating mixtures of rare earth oxides and gallium oxides |
| 12/23/1980 | US4241029 Hydroxyquinoline |
| 04/29/1980 | CA1076364A1 Process for concentrating and recovering gallium |
| 04/15/1980 | US4198231 Recovery and separation of gadolinium and gallium |
| 03/19/1980 | EP0008992A1 Process for recovering indium |
| 03/18/1980 | US4193968 Process for recovering gallium |
| 02/19/1980 | CA1072043A1 Method of extracting gallium from aluminate solutions |
| 09/11/1979 | CA1062017A1 Recovery of gallium |
| 07/11/1979 | EP0002970A1 Process for the extraction of gallium and gallium recovered thereby |
| 06/05/1979 | CA1055882A1 Process for the electrolytic recovery of gallium and/or alkali metals |
| 05/22/1979 | CA1054801A1 Process for extraction of gallium from sodium |