Patents Examined by Amelia B. Yorbrough
  • Asphalt and emulsions thereof for pavements
    Patent number: 4268318
    Abstract: An asphalt base stock comprising a solvent refined asphalt having a penetration less than 25 and low ductility mixed with an asphalt cement. The base stock has a low penetration, 25-45, but unexpected high ductility, 150+. The base stock is especially suited for emulsification. When mixed with soils and aggregates, as for road surfaces, the stabilized product exhibits a significant increase in bearing strength over comparable asphalt-emulsion pavements and hot-mix asphalt pavements.
    Type: Grant
    Filed: July 10, 1979
    Date of Patent: May 19, 1981
    Assignee: Penelizer Corporation
    Inventor: Eugene M. Stone