Inventor · disambiguated record
Donald R. Weir
Also filed as: GENIK-SAS-BEREZOWSKY ROMAN M · WEIR DONALD R · WEIR DONALD ROBERT
30 granted patents·793 citations·filing 1974–1985
98Inventor score
Top patents by PatentIndex Score
30 records- 0197US4571264ARecovery of gold from refractory auriferous iron-containing sulphidic oreSHERRITT GORDON MINES LTD·Filed 1985·Granted Feb 18, 1986·89 cites·11 claims
- 0296US4605439ARecovery of gold from refractory auriferous iron-containing sulphidic materialSHERRITT GORDON MINES LTD·Filed 1985·Granted Aug 12, 1986·59 cites·7 claims
- 0394US4606763AProcess for the pressure oxidation acid leaching of non-ferrous metal and iron-containing sulphidic materialSHERRITT GORDON MINES LTD·Filed 1985·Granted Aug 19, 1986·53 cites·17 claims
- 0492US4157912AProcess for recovery of copper and zinc from complex sulphidesCOMINCO LTD·Filed 1978·Granted Jun 12, 1979·38 cites·16 claims
- 0591US4632701AProcess for the recovery of silver from a residue essentially free of elemental sulphurSHERRITT GORDON MINES LTD·Filed 1985·Granted Dec 30, 1986·40 cites·19 claims
- 0691US4571263ARecovery of gold from refractory auriferous iron-containing sulphidic concentratesSHERRITT GORDON MINES LTD·Filed 1985·Granted Feb 18, 1986·42 cites·11 claims
- 0791US4366128ARemoval of arsenic from aqueous solutionsSHERRITT GORDON MINES LTD·Filed 1980·Granted Dec 28, 1982·44 cites·14 claims
- 0890US4832925ARecovery of zinc from zinc-containing sulphidic materialSHERRITT GORDON MINES LTD·Filed 1983·Granted May 23, 1989·35 cites·4 claims
- 0988US4610724ARecovery of gold from refractory auriferous iron-containing sulphidic materialSHERRITT GORDON MINES LTD·Filed 1985·Granted Sep 9, 1986·33 cites·9 claims
- 1088US4571262ARecovery of platinum group metals from nickel-copper-iron matteSHERRITT GORDON MINES LTD·Filed 1985·Granted Feb 18, 1986·50 cites·9 claims
- 1184US4545963AProcess for separately recovering zinc and lead values from zinc and lead containing sulphidic oreSHERRITT GORDON MINES LTD·Filed 1983·Granted Oct 8, 1985·25 cites·9 claims
- 1281US4440569ARecovery of zinc from zinc-containing sulphidic materialSHERRITT GORDON MINES LTD·Filed 1983·Granted Apr 3, 1984·36 cites·6 claims
- 1377US4505744ARecovery of zinc from zinc containing sulphidic materialSHERRITT GORDON MINES LTD·Filed 1983·Granted Mar 19, 1985·18 cites·14 claims
- 1474US4594102ARecovery of cobalt and nickel from sulphidic materialSHERRITT GORDON MINES LTD·Filed 1983·Granted Jun 10, 1986·23 cites·6 claims
- 1573US4657944ACO2 -induced in-situ gelation of polymeric viscosifiers for permeability contrast correctionPHILLIPS PETROLEUM CO·Filed 1985·Granted Apr 14, 1987·25 cites·10 claims
- 1673US4606766AProcess for separately recovering gold and silver from solution by carbon adsorptionSHERRITT GORDON MINES LTD·Filed 1985·Granted Aug 19, 1986·17 cites·2 claims
- 1769US4510028AProcess for recovering zinc from zinc ferrite materialSHERRITT GORDON MINES LTD·Filed 1983·Granted Apr 9, 1985·14 cites·11 claims
- 1868US4108640AHydrometallurgical process for the production of cobalt powder from mixed metal sulphidesSHERRITT GORDON MINES LTD·Filed 1976·Granted Aug 22, 1978·16 cites·9 claims
- 1966US4443253ARecovery of zinc from zinc containing sulphidic materialsSHERRITT GORDON MINES LTD·Filed 1982·Granted Apr 17, 1984·12 cites·12 claims
- 2065US4405570ARemoval of dissolved cadmium and copper from sulphate solution with hydrogen sulfideSHERRITT GORDON MINES LTD·Filed 1982·Granted Sep 20, 1983·14 cites·9 claims
- 2163US4279867AProcess for the recovery of copper and zinc values from sulphidic oreSHERRITT GORDON MINES LTD·Filed 1980·Granted Jul 21, 1981·13 cites·12 claims
- 2260US4148632ATreatment of dissolved basic nickel carbonate to obtain nickelSHERRITT GORDON MINES LTD·Filed 1978·Granted Apr 10, 1979·15 cites·8 claims
- 2358US4406864ARecovery of uranium from material containing iron, arsenic and siliceous matterSHERRITT GORDON MINES LTD·Filed 1980·Granted Sep 27, 1983·8 cites·8 claims
- 2457US4423007ARemoval of radium from aqueous sulphate solutionsSHERRITT GORDON MINES LTD·Filed 1981·Granted Dec 27, 1983·20 cites·8 claims
- 2555US4405566ARemoval of uranium from sulphate solutions containing molybdenumSHERRITT GORDON MINES LTD·Filed 1980·Granted Sep 20, 1983·8 cites·12 claims
- 2655US4330508ARemoval of selenium (IV) and (VI) from acidic copper sulphate solutionsSHERRITT GORDON MINES LTD·Filed 1980·Granted May 18, 1982·10 cites·6 claims
- 2754US4222999ARemoval of selenium from sulphate solutionsSHERRITT GORDON MINES LTD·Filed 1978·Granted Sep 16, 1980·7 cites·4 claims
- 2852US4645532AProduction of fine spherical copper powderSHERRITT GORDON MINES LTD·Filed 1985·Granted Feb 24, 1987·18 cites·20 claims
- 2948US4374808ARemoval of selenium from acidic copper/nickel solutionsSHERRITT GORDON MINES LTD·Filed 1982·Granted Feb 22, 1983·7 cites·11 claims
- 3045US3998627AProcess for recovering metals from metal ammine bearing ammonium salt solutions using ion exchange resinSHERRITT GORDON MINES LTD·Filed 1974·Granted Dec 21, 1976·4 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →