| Patents for C01G 7 - Compounds of gold (484) |
|---|
| 12/20/1990 | CA2018548A1 Composition |
| 12/04/1990 | US4974816 Controlling oxidation |
| 11/06/1990 | US4968346 Nonexplosive, efficient |
| 09/14/1990 | CA2012007A1 Activated carbon for recovery of gold |
| 06/27/1990 | EP0252912B1 Immobilised extractants |
| 06/20/1990 | CN1008446B Leaching process |
| 06/12/1990 | US4933204 Method of producing a gold film |
| 05/15/1990 | US4925485 Process for the isolation of noble metals |
| 04/04/1990 | EP0361060A1 Sulfur and nitrogen-containing hydrocarbon compounds and process using same in recovering and concentrating desired ions from solutions thereof |
| 04/03/1990 | US4913730 Recovery of gold from aqueous solutions |
| 03/21/1990 | CN1040572A Manufacturing method for ceramics and products thereof |
| 02/28/1990 | EP0355252A2 Manufacturing method for ceramics and products thereof |
| 02/07/1990 | CN1006722B Gold recovery process |
| 01/23/1990 | US4895597 Recovery of precious metals |
| 01/16/1990 | US4894407 Phosphorous compounds |
| 12/28/1989 | DE3920144A1 Orbital umgelagerte, monoatomare elemente, verfahrenzu ihrer herstellung und ihre weiterverarbeitung Orbital rearranged monoatomic, elements, verfahrenzu their production and their further processing |
| 12/05/1989 | CA1263641A1 Immobilised extractants |
| 11/29/1989 | EP0343455A2 Novel processes and products involving yttrium-alkaline earth-bismuth-copper oxides |
| 11/15/1989 | CN1037127A Extraction technical scheme for rock rot earth absorbent type rare and scattered valuable metals |
| 11/14/1989 | CA1262827A1 Pressurized reaction of refractory ores with heat recovery |
| 11/09/1989 | EP0294387A4 Method and apparatus for biological processing of metal-containing ores. |
| 10/11/1989 | EP0336629A1 Polymer-stabilized colloidal metal solution |
| 09/12/1989 | CA1259196A1 Method for eluting a metal adsorbed on an chelating agent |
| 09/06/1989 | CN1035321A Method using composite extractant to produce high-pure gold |
| 08/15/1989 | US4857492 Transition metal organosols stabilized by organometallic polymers |
| 03/28/1989 | US4816235 Silver and manganese recovery using acidified thiourea |
| 03/28/1989 | US4816234 Utilization of oxygen in leaching and/or recovery procedures employing carbon |
| 03/22/1989 | CN1031829A Manufacturing method for superconducting ceramics |
| 03/21/1989 | US4814007 Solvent extraction, guanidine compound |
| 03/15/1989 | EP0306973A2 Manufacturing method for superconducting ceramics and products thereof |
| 03/09/1989 | DE3729030A1 Mercury adsorbent |
| 03/08/1989 | EP0306031A2 Method and composition for forming superconducting ceramics and superconductive products therefrom |
| 02/07/1989 | US4802920 Sulfonating asphaltene extraction of metal, oxidation, recover ing gold and silver |
| 12/14/1988 | EP0294387A1 Method and apparatus for biological processing of metal-containing ores. |
| 11/22/1988 | US4786481 Method for eluting a metal adsorbed on a chelating agent |
| 11/22/1988 | CA1245057A1 Gold recovery process |
| 11/15/1988 | CA1244749A1 Method and composition for the recovery of precious metals from ores |
| 10/18/1988 | US4778519 Recovery of precious metals from a thiourea leach |
| 09/27/1988 | US4774003 Ion exchange extraction of metallic and non-metallic anions by control of the basicity of amine extractants |
| 09/07/1988 | CN87100949A Gold-extraction method from lean gold-bearing liquor |
| 08/09/1988 | US4762556 Absorption on diallylamine homo or copolymer |
| 07/19/1988 | US4758413 Reactive resins useful for precious metal recovery |
| 07/05/1988 | US4754953 Utilization of oxygen in leaching and/or recovery procedures employing carbon |
| 05/10/1988 | CA1236308A1 Process for hydrometallurgical extraction of precious metals |
| 05/03/1988 | CA1235908A1 Process for the isolation of noble metals |
| 03/29/1988 | US4734270 Sulfide treatment to inhibit mercury adsorption onto activated carbon in carbon-in-pulp gold recovery circuits |
| 03/29/1988 | US4734171 Reducing iodine to iodide while reducing and precipitating gold |
| 03/15/1988 | US4731187 Removal of heavy metals from waste water |
| 03/15/1988 | US4731113 Method for the recovery of precious metals from ores |
| 03/03/1988 | DE3711801C1 Process for separating off and purifying the platinum group metals by precipitation |
| 03/03/1988 | DE3711800C1 Process for separating off and purifying the platinum group metals by solvent extraction |
| 02/23/1988 | US4726841 Solvent extraction using an secondary amide |
| 02/02/1988 | US4722831 Leaching with hydrochloric acid, leaving gold in residues |
| 02/02/1988 | CA1232139A1 Process for separately recovering gold and silver from solution by carbon adsorption |
| 12/08/1987 | US4711863 Immobilized extractants |
| 09/16/1987 | EP0223837A4 Method and apparatus for purification of gold. |
| 08/13/1987 | WO1987004694A1 Method and apparatus for biological processing of metal-containing ores |
| 08/11/1987 | CA1225241A1 Process of recovering copper and of optionally recovering silver and gold by a leaching of oxide- and sulfide-containing materials with water-soluble cyanides |
| 08/05/1987 | CN86106986A Leaching process |
| 08/04/1987 | US4684404 Extraction of gold from ores |
| 07/14/1987 | US4680168 Extraction of Group 8 metals from organic solutions |
| 06/30/1987 | US4676909 Process for recovering noble metals from their cyanide complexes |
| 06/23/1987 | CA1223185A1 Dissolution of noble metals |
| 06/18/1987 | WO1987003623A1 An electrolytic process for the simultaneous deposition of gold and replenishment of elemental iodine |
| 06/03/1987 | EP0223837A1 Method and apparatus for purification of gold. |
| 05/12/1987 | US4664700 Water pollution control |
| 04/28/1987 | EP0203189A4 Method of recovery of gold and other metals. |
| 04/15/1987 | CN86101940A Gold recovered by the method of floatation and absorption |
| 04/14/1987 | US4657642 Direct gold electrolysis from a loaded organic phase |
| 03/12/1987 | WO1987001366A1 Process for purifying silver refinery slimes |
| 02/25/1987 | EP0211305A2 Metal scavenging process |
| 02/24/1987 | US4645535 Method for the recovery of precious metals from ores |
| 01/28/1987 | EP0210004A1 Solvent extraction process for separation of precious metals |
| 12/30/1986 | EP0206377A2 Extraction of transition metals from organic solutions |
| 12/16/1986 | US4629502 Pressurized reaction of refractory ores with heat recovery |
| 12/04/1986 | WO1986007046A1 Method and apparatus for purification of gold |
| 12/03/1986 | EP0203189A1 Method of recovery of gold and other metals |
| 11/12/1986 | CA1213735A1 Chlorination of copper, lead, zinc, iron, silver and gold |
| 10/28/1986 | US4619744 Soluble crosslinkable polyelectrolyte |
| 10/28/1986 | CA1213150A1 Recovery of precious metals |
| 10/14/1986 | CA1212550A1 Recovering gold and silver from an aqueous solution containing cyanic compounds of gold and silver |
| 09/25/1986 | WO1986005521A1 Immobilised extractants |
| 09/24/1986 | CN85109224A Gold recovery process |
| 09/16/1986 | US4612093 Method and apparatus for purification of gold |
| 08/19/1986 | US4606766 Process for separately recovering gold and silver from solution by carbon adsorption |
| 06/19/1986 | WO1986003480A1 Method of recovery of gold and other metals |
| 06/17/1986 | US4595572 Adding mineral acid to reduce ph to 6 or less, passing solution through bed of active carbon |
| 06/17/1986 | CA1205983A1 Elution process and apparatus and extraction of particulate material from a vessel |
| 05/14/1986 | EP0180803A1 Process for recovering noble metals from their cyanides |
| 05/06/1986 | US4587110 Process of recovering copper and of optionally recovering silver and gold by a leaching of oxide- and sulfide-containing materials with water-soluble cyanides |
| 04/09/1986 | EP0177293A2 Process for separately recovering gold and silver from solution by carbon adsorption |
| 03/25/1986 | US4578163 Gold recovery process |
| 03/18/1986 | US4576812 Chlorination of copper, lead, zinc, iron, silver and gold |
| 02/19/1986 | EP0171704A1 Method for eluting a metal adsorbed on a chelating agent |
| 12/31/1985 | US4561887 Process for recovering metals from solution through solvent extraction and pyrometallurgical reduction |
| 12/10/1985 | US4557759 Iodine leach for the dissolution of gold |
| 11/26/1985 | US4555385 Stripping |
| 11/12/1985 | US4552589 Process for the recovery of gold from refractory ores by pressure oxidation |
| 10/30/1985 | EP0159842A2 Method of winning precious metals from geological brines |
| 09/24/1985 | US4543169 Ion exchanging |