Patents by Inventor Chris A. Fleming

Chris A. Fleming 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).

  • Recycling of solids in oxidative pressure leaching of metals using halide ions
    Patent number: 9039806
    Abstract: The invention provides a recycling step in an oxidative pressure leaching process for recovery of metals using halide ions, in which a portion of the leached solids are recycled back to the feed to the autoclave, to allow two or more passes through the high temperature leaching step.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: May 26, 2015
    Assignee: International PGM Technologies
    Inventors: David B. Dreisinger, Chris A. Fleming