Assignee
FREEPORT MINERALS CO
US·30 granted patents·758 citations·filing 1974–1986
Top patents by PatentIndex Score
30 records- 0194US4105741AProcess for recovery of uranium from wet process phosphoric acidFREEPORT MINERALS CO·Filed 1976·Granted Aug 8, 1978·39 cites·11 claims
- 0292US4723998ARecovery of gold from carbonaceous ores by simultaneous chlorine leach and ion exchange resin adsorption processFREEPORT MINERALS CO·Filed 1985·Granted Feb 9, 1988·76 cites·18 claims
- 0391US3962402AOxidation-leaching of chalcopyriteFREEPORT MINERALS CO·Filed 1974·Granted Jun 8, 1976·44 cites·4 claims
- 0490US4738718AMethod for the recovery of gold using autoclavingFREEPORT MINERALS CO·Filed 1985·Granted Apr 19, 1988·70 cites·16 claims
- 0590US4172879AFerric iron removal from aluminum fluoride solutionsFREEPORT MINERALS CO·Filed 1978·Granted Oct 30, 1979·30 cites·11 claims
- 0689US4510027ASimultaneous leaching and electrodeposition of precious metalsFREEPORT MINERALS CO·Filed 1984·Granted Apr 9, 1985·34 cites·28 claims
- 0788US4289532AProcess for the recovery of gold from carbonaceous oresFREEPORT MINERALS CO·Filed 1980·Granted Sep 15, 1981·95 cites·6 claims
- 0888US3961908AAutoclave system for leaching sulfide concentratesFREEPORT MINERALS CO·Filed 1974·Granted Jun 8, 1976·34 cites·9 claims
- 0982US3981968ASolvent extraction of nickel from ammoniacal solutionsFREEPORT MINERALS CO·Filed 1974·Granted Sep 21, 1976·21 cites·22 claims
- 1082US3961030AProduction of alumina from oresFREEPORT MINERALS CO·Filed 1974·Granted Jun 1, 1976·21 cites·8 claims
- 1179US4035023AApparatus and process for hydraulic miningFREEPORT MINERALS CO·Filed 1975·Granted Jul 12, 1977·27 cites·14 claims
- 1266US4345785ADielectric pipe coupling for use in high temperature, corrosive environmentsFREEPORT MINERALS CO·Filed 1980·Granted Aug 24, 1982·34 cites·4 claims
- 1366US3975497AEnhanced selectivity in the separation of nickel and cobalt from ammoniacal solutionsFREEPORT MINERALS CO·Filed 1975·Granted Aug 17, 1976·11 cites·19 claims
- 1463US4190633ACrud handling circuitFREEPORT MINERALS CO·Filed 1977·Granted Feb 26, 1980·13 cites·7 claims
- 1563US4126551AMethod and apparatus for handling solvent extraction crudFREEPORT MINERALS CO·Filed 1977·Granted Nov 21, 1978·23 cites·10 claims
- 1662US4241953ASulfur mine bleedwater reuse systemFREEPORT MINERALS CO·Filed 1979·Granted Dec 30, 1980·31 cites·17 claims
- 1761US4577804AWet grinding phosphate rock in an acidic slurryFREEPORT MINERALS CO·Filed 1984·Granted Mar 25, 1986·15 cites·16 claims
- 1860US4605537ASulfide as a hypochlorite kill agentFREEPORT MINERALS CO·Filed 1984·Granted Aug 12, 1986·10 cites·18 claims
- 1960US4123107AIntegrated sulfur mining - sulfuric acid production systemFREEPORT MINERALS CO·Filed 1977·Granted Oct 31, 1978·16 cites·9 claims
- 2057US4207302AMethod of treating phosphoric acid to prevent crud formation during solvent extractionFREEPORT MINERALS CO·Filed 1976·Granted Jun 10, 1980·10 cites·21 claims
- 2156US4710366AMethod for producing stabilized wet process phosphoric acid with low content of magnesium and aluminumFREEPORT MINERALS CO·Filed 1986·Granted Dec 1, 1987·12 cites·20 claims
- 2256US4487750AStabilization of wet process phosphoric acidFREEPORT MINERALS CO·Filed 1983·Granted Dec 11, 1984·11 cites·11 claims
- 2355US3975507AOxidation-resistant nickel and cobalt sulfides and method for preparing sameFREEPORT MINERALS CO·Filed 1975·Granted Aug 17, 1976·12 cites·27 claims
- 2449US4721566ATilting pan filters and cam thereforFREEPORT MINERALS CO·Filed 1985·Granted Jan 26, 1988·16 cites·20 claims
- 2545US4675107ATilting pan filtersFREEPORT MINERALS CO·Filed 1985·Granted Jun 23, 1987·16 cites·20 claims
- 2637US4671833AProcess for applying a heat-shrinkable material over sulfur well pipingFREEPORT MINERALS CO·Filed 1984·Granted Jun 9, 1987·15 cites·15 claims
- 2737US3965248ARemoval of P2 O5 from aluminum fluoride enriched crystallization mother liquorsFREEPORT MINERALS CO·Filed 1974·Granted Jun 22, 1976·2 cites·7 claims
- 2835US4157847AMethod and apparatus for utilizing accumulated underground water in the mining of subterranean sulphurFREEPORT MINERALS CO·Filed 1977·Granted Jun 12, 1979·10 cites·20 claims
- 2925US4124253ASulfur well sealing methodFREEPORT MINERALS CO·Filed 1977·Granted Nov 7, 1978·7 cites·9 claims
- 3021US4156545AProcess for heating and chemically treating an aqueous process fluidFREEPORT MINERALS CO·Filed 1977·Granted May 29, 1979·3 cites·8 claims
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