| Patents for C01G 7 - Compounds of gold (484) |
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| 11/02/2000 | EP1048618A1 Process for making gold salt for use in electroplating process |
| 11/02/2000 | CA2367609A1 Recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions |
| 10/30/2000 | CA2306319A1 Process for making gold salt for use in electroplating process |
| 10/03/2000 | US6126807 Dechlorination from sodium gold chloride, sulfiting; sodium gold sulfite solution can be solidified by a freeze-drying process; use in gold electroplating baths |
| 09/12/2000 | US6117330 Process of using sulfur and nitrogen-containing hydrocarbons in recovering and concentrating desired ions from solutions thereof |
| 05/31/2000 | EP1005088A1 Sintered body for and manufacture of ceramic substrates |
| 04/26/2000 | EP0951372A4 Strengthened metal halide particles and improved lamp fill material and method therefor |
| 01/05/2000 | CN1047961C Hydrogenating treatment catalyst |
| 12/07/1999 | US5997999 Sintered body for manufacturing ceramic substrate |
| 10/27/1999 | EP0951372A1 Strengthened metal halide particles and improved lamp fill material and method therefor |
| 08/17/1999 | US5939034 Complexing with the quanidyl or the quaternary amine extractants, stripping with aqueous stripping solution and demetallization |
| 02/09/1999 | CA1340385C Recovery of precious metals |
| 12/23/1998 | EP0885170A1 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 12/22/1998 | US5851499 Method for pressure oxidizing gold-bearing refractory sulfide ores having organic carbon |
| 11/17/1998 | US5837210 Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate |
| 08/26/1998 | CN1191521A Method of biotreatment for solid materials in nonstirred surface bioreactor |
| 06/23/1998 | CA2016562C Elution process for gold-iodine complex from ion-exchange resins |
| 05/19/1998 | US5752395 Golden ornament and method for production thereof |
| 04/30/1998 | WO1998017395A1 A method for processing refractory auriferous sulfide ores involving preparation of a sulfide concentrate |
| 03/19/1998 | WO1998011019A1 Method for pressure oxidizing gold-bearing refractory sulfide ores having organic carbon |
| 02/26/1998 | WO1998007537A1 Strengthened metal halide particles and improved lamp fill material and method therefor |
| 02/12/1998 | WO1998005569A1 Gold extraction from ores with chemicals regeneration |
| 12/31/1997 | WO1997049474A1 Process for the recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions |
| 12/31/1997 | CA2256764A1 Process for the recovery of precious metal values from aqueous ammoniacal thiosulfate leach solutions |
| 08/05/1997 | US5653945 Method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate |
| 06/25/1997 | CN1152487A Method for preparation of golden powder by decomposing aerosol |
| 04/01/1997 | US5616165 Method for making gold powders by aerosol decomposition |
| 03/12/1997 | EP0761349A1 Method for making gold powders by aerosol decomposition |
| 12/05/1996 | WO1996038381A1 Method of biotreatment for solid materials in a nonstirred surface bioreactor |
| 10/30/1996 | CN1134367A Golden ornament and its producing method |
| 10/24/1996 | WO1996033146A1 A method for processing gold-bearing sulfide ores involving preparation of a sulfide concentrate |
| 10/16/1996 | CN1133617A Gold lixiviation using nitrogen and sulfur beterocyclic aromatic |
| 08/21/1996 | EP0727506A1 Golden ornament and method for production thereof |
| 04/24/1996 | CN1121048A Hydrogenating treatment catalyst |
| 02/28/1996 | CN1117473A Chemical reacting tank for obtaining metal and salt |
| 01/16/1996 | US5484470 As catalyst available for coordination to surface of undissolved gold |
| 01/03/1996 | EP0690505A2 Sintered body for and manufacture of ceramic substrates |
| 11/29/1995 | CN1030401C Gold-extracting process with liquid film of soaking while grinding and its equipment |
| 10/17/1995 | US5458866 Process for preferentially oxidizing sulfides in gold-bearing refractory ores |
| 08/22/1995 | CA1336748C Reactive resins useful for precious metal recovery |
| 04/27/1995 | WO1995011319A1 Gold lixiviation using nitrogen and sulfur heterocyclic aromatic compounds |
| 02/14/1995 | CA1334453C Transition metal organosols stabilized by organometallic polymers |
| 02/14/1995 | CA1334401C Sulfur and nitrogen-containing hydrocarbon compounds and process using same in recovering and concentration desired ions from solutions thereof |
| 11/08/1994 | US5362470 Ultrafine gold and/or silver chalcogenide and production thereof |
| 10/25/1994 | US5358699 Isolation of gold, silver and/or platinum by oxidation using lignins or tannins containing ortho-quinones or catechol as oxidation promoters before treatment with other chemicals |
| 09/06/1994 | US5344625 Lignin or tannin derivatives |
| 08/02/1994 | US5334359 Apparatus for production of sparingly water-soluble salt crystal grains |
| 07/12/1994 | US5328669 Extraction of precious metals from ores and other precious metal containing materials using halogen salts |
| 06/07/1994 | CA1329989C Method and apparatus for biological processing of metal-containing ores |
| 05/03/1994 | US5308381 Adding oxidant and heat treatment, forming gold ammine or silver ammine solutions |
| 02/08/1994 | US5284633 Solvent extraction of precious metals with hydroxyquinoline and stripping with acidified thiourea |
| 02/02/1994 | EP0580780A1 Inorganic perbromide compositions and methods of use thereof |
| 01/18/1994 | US5279803 Precious metal recovery process from carbonaceous ores |
| 01/18/1994 | US5279802 Oxidation of metal sulfide at alkaline pH; complexing |
| 10/05/1993 | CA1322658C Sulfide treatment to inhibit mercury adsorption onto activated carbon in carbon-in-pulp gold recovery circuits |
| 09/21/1993 | CA2063694A1 Ammonia extraction of gold and silver from ores and other materials |
| 08/03/1993 | US5232490 Oxidation/reduction process for recovery of precious metals from MnO2 ores, sulfidic ores and carbonaceous materials |
| 07/20/1993 | US5229085 Using pure oxygen gas instead of air |
| 04/28/1993 | CN1071465A Gold-extracting process with liquid film of soaking while grinding |
| 01/20/1993 | EP0523842A1 Apparatus for production of sparingly water-soluble salt crystal grains |
| 01/19/1993 | CA1312842C Extraction of noble metal in alternating field from ore slurry |
| 01/12/1993 | CA1312624C Extraction of metals |
| 01/07/1993 | EP0521612A1 Ultrafine gold and/or silver chalcogenide and production thereof |
| 11/19/1992 | DE4116000A1 Sepg. gold and silver complexes from aq. systems of cyanide or halogen - by absorption on strongly basic anion exchanger based on polymeric crosslinked organo:siloxane ammonium cpds. |
| 10/29/1992 | WO1992018422A1 Inorganic perbromide compositions and methods of use thereof |
| 10/29/1992 | CA2107895A1 Inorganic perbromide compositions and methods of use thereof |
| 10/20/1992 | US5156825 Pumping plating rinse water over basic ion exchange resin, then two-step elution with basic aqueous solution, evaporation and crystallization of gold cyanide salts |
| 09/22/1992 | US5149682 Manufacturing method for superconducting ceramics and products thereof |
| 09/15/1992 | US5147618 Ion exchange resin |
| 09/15/1992 | US5147617 Process for recovery of gold from gold ores using a complexing pretreatment and sulfurous acid leaching |
| 08/25/1992 | CA1306613C Recovery of gold from aqueous solutions |
| 08/18/1992 | US5139752 Pulverizing ore, complexing metal, dissolving complex |
| 08/12/1992 | EP0223837B1 Method and apparatus for purification of gold |
| 08/11/1992 | US5137700 Processes employing iodine-iodide etching solutions |
| 07/15/1992 | EP0294387B1 Method and apparatus for biological processing of metal-containing ores |
| 05/19/1992 | US5114687 Using ammonia and ammonium salts for extraction followed by oxidation and heating |
| 02/11/1992 | CA1295486C Extraction of transition metals from organic solutions |
| 01/26/1992 | CA2041719A1 Process for the enhanced production of silver from gold and silver bearing ore |
| 12/10/1991 | US5071819 Sulfur and nitrogen-containing hydrocarbons and process of using same in recovering and concentrating desired ions from solutions thereof |
| 10/22/1991 | CA1291063C Method and apparatus for purification of gold |
| 09/24/1991 | US5051394 Precipitation and roasting |
| 09/24/1991 | US5051128 Adsorption of a gold-iodine complex on an ion exchange resin, adding sulfuric acid and sodium nitrite and adding sodium sulf ite |
| 08/21/1991 | EP0232380B1 Process for purifying silver refinery slimes |
| 07/23/1991 | US5034055 Process for the enhanced production of silver from gold and silver bearing ore |
| 07/02/1991 | US5028585 Superconducting oxide FCC oxide composite compositions and method of making such compositions |
| 07/02/1991 | US5028260 Recovery of gold from acidic solutions |
| 06/11/1991 | US5023067 Aqueous slurry consisting of homogeneous dispersion of coprecipitated metal carbonates and quaternary ammonium salts |
| 05/28/1991 | US5019162 Activated carbon for recovery of gold |
| 05/22/1991 | CN1051590A Technology for extracting chloroauric acid (gold chloride) from gravel |
| 05/02/1991 | EP0425102A1 Method for eluting adsorbed gold from carbon |
| 03/30/1991 | CA2026249A1 Method for eluting adsorbed gold from carbon |
| 03/26/1991 | US5002926 Thallium-Calcium-Barium-Copper Oxide Superconductors |
| 02/12/1991 | US4992207 Composition for extraction of metal ions and oxanions |
| 02/12/1991 | US4992200 Recovery of precious metals |
| 01/30/1991 | CN1011420B Method using composite extractant to produce high-pure gold |
| 01/22/1991 | CA1279196C Process for purifying silver refinery slimes |
| 01/16/1991 | EP0408185A2 Recovery of gold from acidic solutions |
| 12/27/1990 | EP0404374A2 Composition |
| 12/25/1990 | US4980134 Leaching process |
| 12/25/1990 | US4979987 Precious metals recovery from refractory carbonate ores |