Patents Assigned to EPROPP, LLC
  • Proppant material incorporating fly ash and method of manufacture
    Patent number: 9587170
    Abstract: A relatively low density, high strength round proppant material having (i) a round core made of a sintered mixture of fly ash and clay or, in some instances, fly ash, clay, and bauxite; and (ii) an outer shell made of sintered bauxite, and a method of making the same.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: March 7, 2017
    Assignee: EPROPP, LLC
    Inventor: Ralph Enderle