Patents Assigned to Pester Refining Company
  • Asphalt rejuvenating composition and process
    Patent number: 4549834
    Abstract: The process and composition for improving asphalt paving by mining existing roads for their asphalt content, blending the mined or recycled asphalt with new asphalt which is unusually high in resin content to provide a pavement of increased ductility and improved penetration characteristics which will wear better.
    Type: Grant
    Filed: September 29, 1983
    Date of Patent: October 29, 1985
    Assignee: Pester Refining Company
    Inventor: Jerry R. Allen