Patents by Inventor Rene Maheas

Rene Maheas 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).

  • Patent number: 4978393
    Abstract: A process for the manufacture of stockable dense road asphalt that is comprised of materials, having elements of a diameter from essentially zero to 10-30 mm, coated in a cutback or fluidified bitumen-based binder. The materials are separated into at least two granulometries. The first group is a grouping of the smallest elements. The second group is a grouping of the remaining elements. The first group is coated with a first bituminous binder emulsion which is a cationic cutback or fluidified bitumen emulsion with a fracture index greater than zero and having a residual binder viscosity measured on a Standard Tar Viscosimeter (10 mm, 25.degree. C.) of less than 50 seconds. The second group is coated with a second bituminous binder emulsion which is a cationic cutback or fluidified bitumen emulsion with a residual binder viscosity measured on a Standard Tar Viscosimeter (10 mm, 25.degree. C.) of between 1000 and 2000 seconds. Both the coated groups are then mixed together for a few seconds.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: December 18, 1990
    Inventor: Rene Maheas