Patents Assigned to Bitumar R. & D. (2768836 Canada Inc.)
  • Asphalt composition and process for obtaining same
    Patent number: 5270361
    Abstract: In accordance with the present invention, there is provided an asphalt composition which incorporates asphalt in admixture with synthetic or natural rubber and elemental selenium or an organo-selenium. There is also provided a process for preparing the above asphalt composition. Preferably, the rubber is obtained from waste tires or tubes.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: December 14, 1993
    Assignee: Bitumar R. & D. (2768836 Canada Inc.)
    Inventors: Quoc D. Duong, Rheal Boisvert