Patents by Inventor Simon Hesp

Simon Hesp 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).

  • In-situ stabilized compositions
    Patent number: 5708061
    Abstract: Insoluble particulate materials, which may be in solid or liquid form, are dispersed in a continuous non-aqueous phase and the dispersion rendered stable and resistant to phase separation by an in-situ stabilization procedure involving the formation of chemical bonds among the stabilizer components and to dispersed phases to form a network surrounding the particles which is compatible with the continuous phase. The invention has particular application for the formation of stabilized polyolefin-modified bitumen compositions for paving and other applications.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: January 13, 1998
    Assignee: University of Toronto Innovations Foundation
    Inventors: Simon Hesp, Zhizhong Liang, Raymond T. Woodhams
  • In-situ stabilized compositions
    Patent number: 5494966
    Abstract: Insoluble particulate materials, which may be in solid or liquid form, are dispersed in a continuous non-aqueous phase and the dispersion rendered stable and resistant to phase separation by an in-situ stabilization procedure involving the formation of chemical bonds among the stabilizer components and to dispersed phases to form a network surrounding the particles which is compatible with the continuous phase. The invent ion has particular application for the formation of stabilized polyolefin-modified bitumen compositions for paving and other applications.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: February 27, 1996
    Inventors: Simon Hesp, Zhizhong Liang, Raymond T. Woodhams
  • Bitumen-polymer stabilizer, stabilized bitumen-polymer compositions and methods for the preparation thereof
    Patent number: 5280064
    Abstract: A stabilizer for bitumen-polymer compositions. Polyethylene-bitumen compositions having the polyethylene component dispersed throughout the solution and stabilized against gross phase separation are described. A method for preparation of the stabilizer includes vulcanization of a bitumen and amine-terminated poly(butadiene-co-acrylonitrile). Carboxylated polyethylene is coupled with the vulcanization product to obtain the stabilizer. Polyethylene dispersed in bitumen containing the stabilizer does not undergo gross phase separation and droplets in the 1 to 5 micron range are observed microscopically.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: January 18, 1994
    Inventors: Simon Hesp, Zhizhong Liang, Raymond T. Woodhams