Patents by Inventor Virgil C. Crites

Virgil C. Crites 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 of recovering fine gold from ore
    Patent number: 4019971
    Abstract: Ore bearing small particles of precious metal which forms an amalgam with mercury is passed in a water-ore pulp first over a positively charged conductive surface to neutralize particles of organic matter and then over amalgamating plates, flouring of mercury on the amalgamating plates being inhibited by the discharge of organic particles in the pulp.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: April 26, 1977
    Assignee: Peter J. Bonin
    Inventor: Virgil C. Crites