Patents by Inventor Robert L. Fairbanks

Robert L. Fairbanks 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).

  • Method and apparatus for copper processing
    Patent number: 5403382
    Abstract: Copper is extracted from ore by crushing copper bearing ore followed by heap leaching with sulfuric acid and then moving the resulting solution to a tank containing scrap iron and agitating the solution to precipitate the copper. The tank possesses at least one gate for retaining the scrap iron, which gate is disposed above the bottom of the tank and has a mesh of at least one square inch.
    Type: Grant
    Filed: March 16, 1993
    Date of Patent: April 4, 1995
    Inventor: Robert L. Fairbanks