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"During my service in the United States Congress, I took the initiative in creating the Internet."
Al Gore ; The basis for the later misquote by US Republicans that Gore had "invented" the Internet. Gore was the leading political champion of the modern-day Internet.
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| Number | Title | Issue Date |
| 6156186 | Method for removing contaminants from process streams in metal recovery processes The present invention is directed to a process for removing various contaminants (e.g., organic collectors, contaminant metals or spectator ions, and/or suspended and colloidal solids) from process streams in leaching processes. The contaminant removal is... | 12/05/2000 |
| 5874055 | Chloride assisted hydrometallurgical extraction of metal A process for the extraction of a metal from an ore or concentrate comprises subjecting the ore or concentrate to pressure oxidation in the presence of oxygen and an acidic solution containing halogen ions and a source of bisulphate or sulphate ions, such... | 02/23/1999 |
| 5869012 | Chloride assisted hydrometallurgical extraction of metal A process for the extraction of zinc from a sulphide ore or concentrate containing copper and zinc includes subjecting the concentrate to pressure oxidation in the presence of oxygen and an acidic halide solution to obtain a resulting pressure oxidation s... | 02/09/1999 |
| 5542957 | Recovery of platinum group metals and rhenium from materials using halogen reagents Platinum group metals and rhenium are extracted from their elemental state, complex ores, and other materials such as catalysts by leaching them with a solution containing ammonium halogen salts--iodide and bromide in the presence oxygen and/or sulfuric a... | 08/06/1996 |
| 5487819 | Production of metals from minerals A process for producing one or more metals from a mineral feedstock (12) is defined. The mineral is fed to a leaching apparatus (10) wherein it is contacted with electrolyte (14). The leaching apparatus has zones of decreasing oxidation potential (17, 18,... | 01/30/1996 |
| 5389212 | Method for recovering photographic and industrial waste Exposed photographic or X-ray film is agitated in a warm leaching bath which causes the silver-bearing emulsion to be removed from the film's plastic substrate in the form of a liquid concentrate which is cycled repeatedly through a first electrolytic ext... | 02/14/1995 |
| 5156721 | Process for extraction and concentration of rhodium Enclosed herein is a process for extracting and concentrating rhodium metal from its ores or from secondary sources which comprises electrolysis of an aqueous solution of halide ions at a selected pH so as to generate a reactive species and causing metall... | 10/20/1992 |
| 5135624 | Electrolytic hydrometallurgical silver refining An efficient hydrometallurgical refining method is disclosed for the production of high purity silver. The method comprises: casting an anode of raw silver; subjecting the cast anode to an electrorefining stage wherein the raw silver is directly electrore... | 08/04/1992 |
| 4997532 | Process for extracting noble metals The invention provides a hydrometallurgical process for extracting noble metals from raw materials containing the same, comprising (a) leaching the raw materials with a mineral acid to leave a residue containing the noble metals, (b) treating said residue with... | 03/05/1991 |
| 4980134 | Leaching process Noble metals, particularly gold, are recovered from ores by a leaching process in which a slurry of ground ore containing an oxidant and a lixiviant for dissolving the noble metal is subjected to an alternating electric field which accelerates and promote... | 12/25/1990 |
| 4904358 | Gold and silver recovery processes by electrolytic generation of active bromine The invention comprises leaching of ore or other materials containing gold and/or silver with an electrolyzed sodium bromide solution. A quantity of electric current is passed through a volume of 5% to 50% by weight sodium bromide solution to generate a q... | 02/27/1990 |
| 4734171 | Electrolytic process for the simultaneous deposition of gold and replenishment of elemental iodine An improved process for recovering gold from gold-containing materials by iodide/iodine leaching is provided wherein the pregnant lixiviant containing solubilized gold and iodine is treated in an electrolytic cell to reduce gold in solution to elemental g... | 03/29/1988 |
| 4668289 | Method for reclaiming gold A method for reclaiming gold in metallic form from gold-containing scrap, including gold-containing base metal alloys and articles in which base metals are at least partially covered with a layer of gold. The method includes the steps of exposing the gold... | 05/26/1987 |
| 4557759 | Iodine leach for the dissolution of gold A process for the hydrometallurgical recovery of gold from materials containing gold comprising leaching the materials with a lixiviant containing iodine. To a solution concentrated with natural salts is added elemental iodine until saturated, whereupon m... | 12/10/1985 |
| 4299676 | Recovery of silver from photographic film A process is provided for recovering silver and plastics material from photographic film. For exposed film, film is shredded or chopped, subjected to bleach treatment, washed, and subjected to fixing treatment, the fixing solution being circulated in clos... | 11/10/1981 |
| 4288304 | Hydrometallurgical process for treatment of sulphur ores The invention provides a process for extracting zinc from a sulphur- and zinc-containing ore which involves (a) leaching the sulphur ore or concentrate with an aqueous solution of cupric chloride, which can be regenerated by means of a regenerating agent ... | 09/08/1981 |
| 4173519 | Method, process, system, and apparatus for recovering metal values from ores A method, process, system, and apparatus for recovering metal values such as gold and silver from ores. The process contemplates the prior separation, through appropriate apparatus, of primary slimes from the coarse fraction of ores and each fraction is p... | 11/06/1979 |
| 4159930 | Process for recovering heavy metal ions from dilute aqueous solution A process for treating very dilute solutions containing ecologically noxious heavy metal ions, in which the solutions are made acceptable for return to the environment, and the typically valuable heavy metal present in the solution is recovered at an econ... | 07/03/1979 |
