Patents by Inventor Ricardo A. Cifuentes

Ricardo A. Cifuentes 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).

  • Heap leach agglomeration/percolation extraction aids for enhanced gold and silver recovery
    Patent number: 6428597
    Abstract: Methods and compositions for increasing the recovery of precious metals from ore during heap leaching operations are disclosed. The methods add polypropylene glycol and alkylphenol ethoxylate in a paraffin oil solvent with the cyanide lixivant to the ore heap.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: August 6, 2002
    Assignee: BetzDearborn Inc.
    Inventor: Ricardo A. Cifuentes