Patents by Inventor Oliver Renato de Araujo Gobbo

Oliver Renato de Araujo Gobbo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7964016
    Abstract: The present invention embodies a process for extraction of nickel, cobalt, and other metals from laterite ores by heap leaching, and of the product obtained as well, characterized by the fact that it is comprised of crushing (I), agglomeration (II), stacking (III), and heap leaching (IV) stages, with this last stage being a continuous, counter-current, heap leaching system with two or more stages, comprised of two phases, one of which is composed of the ore (solute), and the other is composed of the leaching solution, or solvent, which are supplied at opposite ends of a series of stages and flow in opposite directions. Upon cessation of leaching in the last stage, its solute is removed and a new stage is introduced at the first position, formed by new ore (solute) to be leached by the solvent solution, which is introduced from the last stage, percolating or flowing though all the previous stages until it reaches the first stage, being separated if loaded with target metals (PLS).
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: June 21, 2011
    Assignee: Companhia Vale Do Rio Doce
    Inventors: Geysa Santos de Pontes Pereira, Oliver Renato de Araujo Gobbo