Assignee
COMINCO LTD
110 granted patents·2,552 citations·filing 1974–1999
Top patents by PatentIndex Score
110 records- 0196US5013358AMethod for the recovery of mercury from mercury-containing materialCOMINCO LTD·Filed 1989·Granted May 7, 1991·93 cites·11 claims
- 0295US4717540AMethod and apparatus for dissolving nickel in molten zincCOMINCO LTD·Filed 1986·Granted Jan 5, 1988·150 cites·13 claims
- 0395US4297866AAsymmetrical shaping of slit segments of meshes formed in deformable stripCOMINCO LTD·Filed 1979·Granted Nov 3, 1981·64 cites·12 claims
- 0495US4291443AForming expanded mesh sheet from deformable stripCOMINCO LTD·Filed 1978·Granted Sep 29, 1981·91 cites·6 claims
- 0594US4743428AMethod for agitating metals and producing alloysCOMINCO LTD·Filed 1986·Granted May 10, 1988·158 cites·11 claims
- 0694US4097271AHydrometallurgical process for recovering copper and other metal values from metal sulphidesCOMINCO LTD·Filed 1976·Granted Jun 27, 1978·70 cites·19 claims
- 0793US5462109AMethod and apparatus for producing metal stripCOMINCO LTD·Filed 1992·Granted Oct 31, 1995·74 cites·30 claims
- 0893US4024218AProcess for hydrometallurgical upgradingCOMINCO LTD·Filed 1975·Granted May 17, 1977·49 cites·22 claims
- 0992US4315356AForming expanded mesh sheet from deformable stripCOMINCO LTD·Filed 1980·Granted Feb 16, 1982·70 cites·16 claims
- 1092US4157912AProcess for recovery of copper and zinc from complex sulphidesCOMINCO LTD·Filed 1978·Granted Jun 12, 1979·38 cites·16 claims
- 1192US3976743ATreatment of zinc plant residueCOMINCO LTD·Filed 1975·Granted Aug 24, 1976·65 cites·20 claims
- 1290US4330319AManufacture of urea sulfur fertilizerCOMINCO LTD·Filed 1981·Granted May 18, 1982·87 cites·13 claims
- 1389US3966568AElectrowinning of galliumCOMINCO LTD·Filed 1974·Granted Jun 29, 1976·59 cites·11 claims
- 1486US4838935AMethod for making tungsten-titanium sputtering targets and productCOMINCO LTD·Filed 1988·Granted Jun 13, 1989·59 cites·28 claims
- 1586US4479854AMethod and apparatus for stripping cathodesCOMINCO LTD·Filed 1984·Granted Oct 30, 1984·38 cites·31 claims
- 1686US4082629AHydrometallurgical process for treating metal sulfides containing lead sulfideCOMINCO LTD·Filed 1977·Granted Apr 4, 1978·25 cites·22 claims
- 1785US4169170AControl of dust during coal transportationCOMINCO LTD·Filed 1977·Granted Sep 25, 1979·49 cites·5 claims
- 1885US4035280AContact bar for electrolytic cellsCOMINCO LTD·Filed 1975·Granted Jul 12, 1977·30 cites·18 claims
- 1984US5167274AMethod and apparatus for cooling particulate solidsCOMINCO LTD·Filed 1991·Granted Dec 1, 1992·55 cites·7 claims
- 2083US4636295AMethod for the recovery of lithium from solutions by electrodialysisCOMINCO LTD·Filed 1985·Granted Jan 13, 1987·53 cites·27 claims
- 2181US4564508AProcess for the recovery of sodium carbonate from salt mixturesCOMINCO LTD·Filed 1984·Granted Jan 14, 1986·28 cites·10 claims
- 2281US4094753ARecovery of gallium from gallium compoundsCOMINCO LTD·Filed 1977·Granted Jun 13, 1978·24 cites·25 claims
- 2380US3998610ARotating concentric homogeneous turbulence centrifugeCOMINCO LTD·Filed 1974·Granted Dec 21, 1976·31 cites·14 claims
- 2480US3997421ATop-mounted anode spacer clipCOMINCO LTD·Filed 1976·Granted Dec 14, 1976·32 cites·18 claims
- 2577US5084180AMethod for treating zinc-containing sulfate solutionCOMINCO LTD·Filed 1990·Granted Jan 28, 1992·45 cites·29 claims
- 2676US5135652AMethod for the solvent extraction of zincCOMINCO LTD·Filed 1990·Granted Aug 4, 1992·43 cites·27 claims
- 2775US4479863ACell top insulatorCOMINCO LTD·Filed 1984·Granted Oct 30, 1984·20 cites·8 claims
- 2875US3961752AMethod and apparatus for dust control treatmentCOMINCO LTD·Filed 1975·Granted Jun 8, 1976·45 cites·9 claims
- 2973US4193970AProcess for the precipitation of iron as jarositeCOMINCO LTD·Filed 1978·Granted Mar 18, 1980·19 cites·3 claims
- 3072US5449563AGalvanic protection of rebar by zinc wireCOMINCO LTD·Filed 1994·Granted Sep 12, 1995·31 cites·16 claims
- 3171US4071422AProcess for concentrating and recovering galliumCOMINCO LTD·Filed 1976·Granted Jan 31, 1978·16 cites·24 claims
- 3270US4389356ASulfur prillingCOMINCO LTD·Filed 1982·Granted Jun 21, 1983·22 cites·19 claims
- 3370US4324621AMethod and apparatus for controlling the quality of electrolytesCOMINCO LTD·Filed 1980·Granted Apr 13, 1982·27 cites·38 claims
- 3470US4217189AMethod and apparatus for control of electrowinning of zincCOMINCO LTD·Filed 1979·Granted Aug 12, 1980·16 cites·24 claims
- 3569US4888051AMethod for the zone refining of galliumCOMINCO LTD·Filed 1988·Granted Dec 19, 1989·21 cites·19 claims
- 3668US4719009ASilica depressant in froth flotation of sulfide oresCOMINCO LTD·Filed 1986·Granted Jan 12, 1988·31 cites·9 claims
- 3767US5002748AMethod for the preparation of copper arsenateCOMINCO LTD·Filed 1988·Granted Mar 26, 1991·13 cites·23 claims
- 3867US4137130AAutomatic stripping of cathode zincCOMINCO LTD·Filed 1977·Granted Jan 30, 1979·14 cites·18 claims
- 3966US4640438ACover for semiconductor device packagesCOMINCO LTD·Filed 1986·Granted Feb 3, 1987·26 cites·19 claims
- 4065US4715939AMethod for removal of monovalent ions from ZnSO4 electrolyte by electrodialysisCOMINCO LTD·Filed 1987·Granted Dec 29, 1987·27 cites·25 claims
- 4164US4969502AMethod and apparatus for the casting of metalsCOMINCO LTD·Filed 1989·Granted Nov 13, 1990·11 cites·10 claims
- 4263US4430178AMethod and apparatus for effecting current reversal in electro-deposition of metalsCOMINCO LTD·Filed 1982·Granted Feb 7, 1984·15 cites·18 claims
- 4362US4976832AMethod for making arsenic acidCOMINCO LTD·Filed 1989·Granted Dec 11, 1990·12 cites·13 claims
- 4462US4443301AControlling metal electro-deposition using electrolyte containing two polarizing agentsCOMINCO LTD·Filed 1982·Granted Apr 17, 1984·12 cites·17 claims
- 4561US4447308AElectrode brushing apparatusCOMINCO LTD·Filed 1983·Granted May 8, 1984·12 cites·10 claims
- 4660US4234318AProcess for granulation of sulfurCOMINCO LTD·Filed 1978·Granted Nov 18, 1980·16 cites·4 claims
- 4759US4288312ACathode and edge stick assemblyCOMINCO LTD·Filed 1979·Granted Sep 8, 1981·12 cites·14 claims
- 4858US5383951AProduction of granular ammonium sulphate using stripped zinc electrolyte as a granulating aidCOMINCO LTD·Filed 1993·Granted Jan 24, 1995·17 cites·8 claims
- 4958US4218425AProcess for extracting arsenic from oxidic materialsCOMINCO LTD·Filed 1978·Granted Aug 19, 1980·10 cites·5 claims
- 5058US4177117ABipolar refining of leadCOMINCO LTD·Filed 1978·Granted Dec 4, 1979·10 cites·38 claims
Showing the top 50 of 110 patent records by PatentIndex Score.
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