Patents by Inventor John M. Rowland

John M. Rowland 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).

  • Performance modifiers for bitumen comprising straight and branched chain fatty amide waxes
    Patent number: 9493633
    Abstract: The present invention generally relates to the discovery that a blend of linear and branched amide wax additives can be used to enhance the performance of asphalt binders and asphalt emulsion residues. In particular, high temperature properties of asphalt pavement can be improved while maintaining or improving low temperature properties. The additives also improve workability and lower processing temperatures for asphalt paving (e.g. warm mix) or for roofing. These amide wax additives can reduce the tracking of tack coats, by decreasing binder penetration and forming a non-tacky surface layer.
    Type: Grant
    Filed: March 11, 2014
    Date of Patent: November 15, 2016
    Assignee: AKZO NOBEL CHEMICALS INTERNATIONAL B.V.
    Inventors: John M. Rowland, Ralph Franklin, Stephanie Hogendoorn
  • Performance Modifiers for Bitumen Comprising Straight and Branched Chain Fatty Amide Waxes
    Publication number: 20160002442
    Abstract: The present invention generally relates to the discovery that a blend of linear and branched amide wax additives can be used to enhance the performance of asphalt binders and asphalt emulsion residues. In particular, high temperature properties of asphalt pavement can be improved while maintaining or improving low temperature properties. The additives also improve workability and lower processing temperatures for asphalt paving (e.g. warm mix) or for roofing. These amide wax additives can reduce the tracking of tack coats, by decreasing binder penetration and forming a non-tacky surface layer.
    Type: Application
    Filed: March 11, 2014
    Publication date: January 7, 2016
    Inventors: John M. Rowland, Ralph Franklin, Stephanie Hogendoorn