Inventor · disambiguated record
Joanna M. Robertson
Also filed as: BREWER LEGAL REPRESENTATIVE SUSAN R · ROBERTSON JOANNA M
34 granted patents·6 pending applications·332 citations·filing 1997–2025
97Inventor score
Files withPHELPS DODGE CORP21FREEPORT MINERALS CORP9FREEPORT MCMORAN CORP8PHELPHS DODGE CORP1SANDIA CORP1
Top patents by PatentIndex Score
40 records- 0196US7517384B2Method for improving metals recovery using high temperature pressure leachingPHELPS DODGE CORP·Filed 2006·Granted Apr 14, 2009·11 cites·19 claims
- 0296US7125436B2Method for improving metals recovery using high temperature pressure leachingPHELPS DODGE CORP·Filed 2005·Granted Oct 24, 2006·13 cites·7 claims
- 0396US6451088B1Method for improving metals recovery using high temperature leachingPHELPS DODGE CORP·Filed 2001·Granted Sep 17, 2002·34 cites·15 claims
- 0495US7485216B2Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extractionPHELPS DODGE CORP·Filed 2005·Granted Feb 3, 2009·14 cites·20 claims
- 0593US6626979B2Method for improving metals recovery using high temperature pressure leachingPHELPS DODGE CORP·Filed 2002·Granted Sep 30, 2003·23 cites·19 claims
- 0692US8012318B2Process for multiple stage direct electrowinning of copperFREEPORT MCMORAN CORP·Filed 2010·Granted Sep 6, 2011·8 cites·11 claims
- 0792US6680034B2Method for recovering metal values from metal-containing materials using high temperature pressure leachingPHELPS DODGE CORP·Filed 2001·Granted Jan 20, 2004·22 cites·20 claims
- 0892US6451089B1Process for direct electrowinning of copperPHELPS DODGE CORP·Filed 2001·Granted Sep 17, 2002·24 cites·23 claims
- 0991US7041152B2Method for processing elemental sulfur-bearing materials using high temperature pressure leachingPHELPS DODGE CORP·Filed 2005·Granted May 9, 2006·6 cites·13 claims
- 1091US6972107B2System for direct electrowinning of copperPHELPS DODGE CORP·Filed 2003·Granted Dec 6, 2005·20 cites·14 claims
- 1190US7666371B2Method for recovering metal values from metal-containing materials using high temperature pressure leachingFREEPORT MCMORAN CORP·Filed 2007·Granted Feb 23, 2010·6 cites·4 claims
- 1290US7462272B2Process for multiple stage direct electrowinning of copperPHELPS DODGE CORP·Filed 2005·Granted Dec 9, 2008·9 cites·19 claims
- 1389US6663689B2Process for direct electrowinning of copperPHELPS DODGE CORP·Filed 2002·Granted Dec 16, 2003·17 cites·11 claims
- 1488US7736488B2Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solvent/solution extractionFREEPORT MCMORAN CORP·Filed 2008·Granted Jun 15, 2010·6 cites·20 claims
- 1588US7722756B2Process for multiple stage direct electrowinning of copperFREEPORT MCMORAN CORP·Filed 2008·Granted May 25, 2010·5 cites·12 claims
- 1688US7341700B2Method for recovery of metals from metal-containing materials using medium temperature pressure leachingPHELPS DODGE CORP·Filed 2004·Granted Mar 11, 2008·23 cites·15 claims
- 1788US6893482B2Method for improving metals recovery using high temperature pressure leachingPHELPS DODGE CORP·Filed 2003·Granted May 17, 2005·14 cites·21 claims
- 1887US10767242B2Methods and systems for leaching a metal-bearing ore using a bio-augmentation processFREEPORT MINERALS CORP·Filed 2019·Granted Sep 8, 2020·2 cites·15 claims
- 1987US9187803B2Systems and methods for improved metal recovery using ammonia leachingFREEPORT MCMORAN CORP·Filed 2013·Granted Nov 17, 2015·3 cites·12 claims
- 2087US8920773B2Systems and methods for metal recoveryFREEPORT MCMORAN CORP·Filed 2012·Granted Dec 30, 2014·4 cites·20 claims
- 2185US6676909B2Method for recovery of metals from metal-containing materials using medium temperature pressure leachingPHELPHS DODGE CORP·Filed 2001·Granted Jan 13, 2004·26 cites·9 claims
- 2285US6497745B2Method for processing elemental sulfur-bearing materials using high temperature pressure leachingPHELPS DODGE CORP·Filed 2001·Granted Dec 24, 2002·12 cites·18 claims
- 2383US10370738B2Methods and systems for leaching a metal-bearing oreFREEPORT MINERALS CORP·Filed 2013·Granted Aug 6, 2019·3 cites·9 claims
- 2478US12492445B2Systems and methods for subsurface metal recoveryFREEPORT MINERALS CORP·Filed 2023·Granted Dec 9, 2025·0 cites·20 claims
- 2578US7476308B2Process for multiple stage direct electrowinning of copperPHELPS DODGE CORP·Filed 2004·Granted Jan 13, 2009·11 cites·50 claims
- 2677US12378634B2Systems and methods for improved raffinate injectionFREEPORT MINERALS CORP·Filed 2023·Granted Aug 5, 2025·0 cites·20 claims
- 2776US2025333815A1Systems and methods for improved raffinate injectionFREEPORT MINERALS CORP·Filed 2025·Application pending·0 cites
- 2875US7473413B2Method for recovering metal values from metal-containing materials using high temperature pressure leachingPHELPS DODGE CORP·Filed 2004·Granted Jan 6, 2009·6 cites·9 claims
- 2974US2019177864A1Systems and methods for metal recoveryFREEPORT MINERALS CORP·Filed 2019·Application pending·0 cites
- 3073US10662502B2Systems and methods for improved metal recovery using ammonia leachingFREEPORT MINERALS CORP·Filed 2018·Granted May 26, 2020·0 cites·14 claims
- 3173US9175366B2Systems and methods for improved metal recovery using ammonia leachingFREEPORT MCMORAN CORP·Filed 2013·Granted Nov 3, 2015·1 cites·10 claims
- 3273US6890371B2Method for processing elemental sulfur-bearing materials using high temperature pressure leachingPHELPS DODGE CORP·Filed 2002·Granted May 10, 2005·5 cites·18 claims
- 3367US10246789B2Systems and methods for copper recovery via roasting and leachingFREEPORT MINERALS CORP·Filed 2016·Granted Apr 2, 2019·0 cites·19 claims
- 3466US10006133B2Systems and methods for improved metal recovery using ammonia leachingFREEPORT MINERALS CORP·Filed 2015·Granted Jun 26, 2018·0 cites·13 claims
- 3562US9340849B2Systems and methods for metal recoveryFREEPORT MCMORAN CORP·Filed 2012·Granted May 17, 2016·0 cites·11 claims
- 3661US2008216606A1Method for recovery of metals from metal-containing materials using medium temperature pressure leachingPHELPS DODGE CORP·Filed 2008·Application pending·0 cites
- 3760US2006191377A1Method for processing elemental sulfur-bearing materials using high temperature pressure leachingPHELPS DODGE CORP·Filed 2006·Application pending·0 cites
- 3858US2006196313A1Method for recovering copper from copper-containing materials using direct electrowinningPHELPS DODGE CORP·Filed 2005·Application pending·0 cites
- 3944US2005126923A1Process for recovery of copper from copper-bearing material using medium temperature pressure leaching, direct electrowinning and solvent/solution extractionPHELPS DODGE CORP·Filed 2004·Application pending·0 cites
- 4034US6019811AMetals processing control by counting molten metal dropletsSANDIA CORP·Filed 1997·Granted Feb 1, 2000·4 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →