Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9920397 | Removal of ferric iron as hematite at atmospheric pressure | Renato Antonio Loaiza Aguilar, Carolina Isabel Meneses Rodríguez, Ruben Rangel De Hoyos | 2018-03-20 |
| 9481919 | Production of high grade nickel product | Omar Yesid Caceres Hernandez, Renato Antonio Loaiza Aguilar, Carolina Isabel Meneses Rodríguez, Ruben Rangel De Hoyos, Illich Alvarez Mercado | 2016-11-01 |
| 8758479 | Nickel recovery from a high ferrous content laterite ore | Omar Yesid Caceres Hernandez, Harald Theowald Muller, Graham A. Reynolds | 2014-06-24 |
| 8454723 | Saprolite neutralisation of heap leach process | Eric Roche | 2013-06-04 |
| 8366801 | Atmospheric acid leach process for laterites | Anthony Chamberlain, Chad James Otto Czerny, Harald Theowald Muller | 2013-02-05 |
| 8268039 | Process for atmospheric leaching of laterite ores using hypersaline leach solution | Graham A. Reynolds | 2012-09-18 |
| 7988938 | Selectively leaching cobalt from lateritic ores | Eric Roche, Adam Sean Moroney | 2011-08-02 |
| 7935171 | Production of metallic nickel with low iron content | Ivan Ratchev, Alexey Duarte, Harald Theowald Muller | 2011-05-03 |
| 7871584 | Consecutive or simultaneous leaching of nickel and cobalt containing ores | Alexey Duarte, Wolf Meihack | 2011-01-18 |
| 7758669 | Process for recovery of nickel and cobalt by heap leaching of low grade nickel or cobalt containing material | Geoffrey William Miller | 2010-07-20 |
| 7597738 | Production of ferro-nickel or nickel matte by a combined hydrometallurgical and pyrometallurgical process | Alexey Duarte, Wolf Meihack, Ivan Ratchev | 2009-10-06 |
| 7585350 | Production of ferronickel | Alexey Duarte, Ivan Ratchev | 2009-09-08 |
| 7559972 | Process for enhanced acid leaching of laterite ores | Damien Krebs | 2009-07-14 |
| 7485268 | Production of titania | Eric Roche, Alan David Stuart, Ernest Philip Grazier | 2009-02-03 |
| 7416711 | Atmospheric pressure leach process for lateritic nickel ore | James D. Gillaspie, Coralie Lewis, David Neudorf, Steven Barnett | 2008-08-26 |
| 6395061 | Process for organic acid bioleaching of ore | Willem P. C. Duyvesteyn | 2002-05-28 |
| 6312500 | Heap leaching of nickel containing ore | Willem P. C. Duyvesteyn, Michael J. Davis | 2001-11-06 |
| 5571308 | Method for recovering nickel from high magnesium-containing Ni-Fe-Mg lateritic ore | Willem P. C. Duyvesteyn, Manuel R. Lastra | 1996-11-05 |
| 5328035 | Lithium metatungstate | Willem P. C. Duyvesteyn, Nicholas L. Labao, Purusotam L. Shrestha | 1994-07-12 |
| 5304359 | Dissolution of platinum group metals from materials containing said metals | Willem D. C. Duyvesteyn, Saskia Duyvesteyn | 1994-04-19 |
| 5292490 | Recovery platinum group metals from oxides ores | Willem P. C. Duyvesteyn, Saskia Duyvesteyn | 1994-03-08 |
| 5236491 | Boron recovery from geothermal brines | Willem P. C. Duyvesteyn, Manuel R. Lastra | 1993-08-17 |
| 5178848 | Lithium metatungstate | Willem P. C. Duyvesteyn, Nicholas L. Labao, Purusotam L. Shrestha | 1993-01-12 |