Assignee
COMINCO ENG SERVICES
CA·24 granted patents·800 citations·filing 1992–2003
Top patents by PatentIndex Score
24 records- 0197US5431788AChloride assisted hydrometallurgical copper extractionCOMINCO ENG SERVICES·Filed 1993·Granted Jul 11, 1995·83 cites·16 claims
- 0296US5902474AChloride assisted hydrometallurgical extraction of metalCOMINCO ENG SERVICES·Filed 1996·Granted May 11, 1999·79 cites·13 claims
- 0395US6171564B1Process for extraction of metal from an ore or concentrate containing nickel and/or cobaltCOMINCO ENG SERVICES·Filed 1998·Granted Jan 9, 2001·56 cites·34 claims
- 0495US5650057AChloride assisted hydrometallurgical extraction of metalCOMINCO ENG SERVICES·Filed 1995·Granted Jul 22, 1997·67 cites·18 claims
- 0594US5645708AChloride assisted hydrometallurgical copper extractionCOMINCO ENG SERVICES·Filed 1995·Granted Jul 8, 1997·47 cites·51 claims
- 0693US5869012AChloride assisted hydrometallurgical extraction of metalCOMINCO ENG SERVICES·Filed 1996·Granted Feb 9, 1999·59 cites·13 claims
- 0793US5855858AProcess for the recovery of nickel and/or cobalt from an ore or concentrateCOMINCO ENG SERVICES·Filed 1996·Granted Jan 5, 1999·48 cites·50 claims
- 0892US7169371B2Process for the treatment of molybdenum concentrateCOMINCO ENG SERVICES·Filed 2002·Granted Jan 30, 2007·29 cites·31 claims
- 0992US5223024AHydrometallurgical copper extraction processCOMINCO ENG SERVICES·Filed 1992·Granted Jun 29, 1993·45 cites·15 claims
- 1091US6455019B2Process for the extraction of copper from a sulphide copper ore or concentrateCOMINCO ENG SERVICES·Filed 2001·Granted Sep 24, 2002·24 cites·14 claims
- 1190US5316567AHydrometallurgical copper extraction processCOMINCO ENG SERVICES·Filed 1993·Granted May 31, 1994·72 cites·12 claims
- 1289US5874055AChloride assisted hydrometallurgical extraction of metalCOMINCO ENG SERVICES·Filed 1996·Granted Feb 23, 1999·42 cites·17 claims
- 1383USRE37251EChloride assisted hydrometallurgical extraction of metalCOMINCO ENG SERVICES·Filed 1999·Granted Jul 3, 2001·31 cites·39 claims
- 1477US6755891B2Process for the treatment or removal of impurities in a hydrometallurgical extraction processCOMINCO ENG SERVICES·Filed 2002·Granted Jun 29, 2004·10 cites·21 claims
- 1576US6383460B2Process for the recovery of nickel and/or cobalt from a concentrateCOMINCO ENG SERVICES·Filed 1998·Granted May 7, 2002·20 cites·21 claims
- 1665US6054105AProcess for the solvent extraction of nickel and cobalt values in the presence of magnesium ions from a solutionCOMINCO ENG SERVICES·Filed 1998·Granted Apr 25, 2000·11 cites·11 claims
- 1758US5814228AFlotation method and apparatusCOMINCO ENG SERVICES·Filed 1996·Granted Sep 29, 1998·15 cites·8 claims
- 1858US5584995AFloatation method and apparatusCOMINCO ENG SERVICES·Filed 1995·Granted Dec 17, 1996·19 cites·10 claims
- 1956US6471849B1Process for the recovery of zinc from a zinc sulphide ore or concentrateCOMINCO ENG SERVICES·Filed 2000·Granted Oct 29, 2002·1 cites·11 claims
- 2048US5693263ASparger for producing gas bubbles in a liquidCOMINCO ENG SERVICES·Filed 1995·Granted Dec 2, 1997·12 cites·5 claims
- 2146US7438874B2Pressure oxidation leaching in the presence of an acidic solution of halide and sulfate ions from copper and base metal containing ore/concentrateCOMINCO ENG SERVICES·Filed 2003·Granted Oct 21, 2008·1 cites·10 claims
- 2246US5643459AFlotation method and apparatusCOMINCO ENG SERVICES·Filed 1995·Granted Jul 1, 1997·10 cites·8 claims
- 2339US5452791ADual drive for belt conveyorCOMINCO ENG SERVICES·Filed 1994·Granted Sep 26, 1995·14 cites·13 claims
- 2431US5857516APressure reducing heat exchangerCOMINCO ENG SERVICES·Filed 1996·Granted Jan 12, 1999·5 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when COMINCO ENG SERVICES files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →