Patents by Inventor Thomas Crane Friel

Thomas Crane Friel 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).

  • Biodegradable float aid for mining beneficiation
    Patent number: 8505736
    Abstract: A biodegradable floatation aid for use in the froth floatation process for ore beneficiation has been developed to replace the current petroleum based hydrocarbons. The product described is an ester of C-8 through C-20 alcohols and C-2 through C-12 diols or triols, reacted with C-12 through C-22 carboxylic acids or C-2 through C-36 dicarboxylic acids.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: August 13, 2013
    Assignee: Bastech, LLC
    Inventors: Thomas Crane Friel, Debbie Tulkoff Petree