Patents Assigned to PRI Asphalt Technologies Inc.
  • Recycled oil and rubber-modified asphalt and method of use
    Patent number: 10941296
    Abstract: A asphalt binder modifier or a stand-alone asphalt binder and the method of making the asphalt binder or binder modifier are disclosed. The asphalt modifier or binder consisting of treated re-refined engine oil bottoms/VTB's treated by injecting air into re-refining engine oil bottoms/VTB's at temperatures between 150° F. and 550° F. The re-refined engine oil can be processed with ground tire rubber. The binder modifier was blended with various paving and roofing asphalts to form performance-enhanced modified asphalt binders used in paving, roofing, and industrial products.
    Type: Grant
    Filed: March 8, 2018
    Date of Patent: March 9, 2021
    Assignee: PRI Asphalt Technologies, Inc.
    Inventor: Kenneth F. Grzybowski
  • SULFUR MODIFIED ASPHALT FOR WARM MIX APPLICATIONS
    Publication number: 20140213699
    Abstract: Disclosed herein are an asphalt concrete mixture, an asphalt binder composition, and methods of preparing the related compositions. The asphalt binder compositions include a polyphosphoric acid, a macromolecular polymer having a saturated backbone with macromolecular modifications, sulfur, and non-surfactant additives based on wax chemistry. The compositions are capable of being performance graded and being used in warm mix asphalt applications.
    Type: Application
    Filed: March 28, 2014
    Publication date: July 31, 2014
    Applicants: PRI Asphalt Technologies, Inc., Saudi Arabian Oil Company
    Inventors: Milind M. Vaidya, Anwar H. Khawajah, Rashid M. Othman, Laurand Lewandowski
  • Sulfur modified asphalt for warm mix applications
    Patent number: 8722771
    Abstract: Disclosed herein are an asphalt concrete mixture, an asphalt binder composition, and methods of preparing the related compositions. The asphalt binder compositions include a polyphosphoric acid, a macromolecular polymer having a saturated backbone with macromolecular modifications, sulfur, and non-surfactant additives based on wax chemistry. The compositions are capable of being performance graded and being used in warm mix asphalt applications.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: May 13, 2014
    Assignees: Saudi Arabian Oil Company, PRI Asphalt Technologies, Inc.
    Inventors: Milind M. Vaidya, Anwar H. Khawajah, Rashid M. Othman, Laurand Lewandowski
  • Modified asphalt compositions
    Patent number: 7202290
    Abstract: A modified asphalt composition is provided comprising at least one plastomer, at least one elastomer, at least one crosslinking agent and asphalt. More specifically, a modified asphalt composition is provided comprising an oxidized polyethylene, a styrene-butadiene-styrene block copolymer, sulfur, and asphalt. A hot mix asphalt composition is also provided comprising the modified asphalt composition and aggregate. Processes for producing the modified asphalt composition and the hot mix asphalt composition are also provided as well as articles produced from these inventive compositions.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: April 10, 2007
    Assignees: Eastman Chemical Company, PRI Asphalt Technologies Inc.
    Inventors: Richard Kingsley Stuart, Jr., Jeffery Lynn Presley, Kenneth Francis Grzybowski
  • Modified asphalt compositions
    Patent number: RE42165
    Abstract: A modified asphalt composition is provided comprising at least one plastomer, at least one elastomer, at least one crosslinking agent and asphalt. More specifically, a modified asphalt composition is provided comprising an oxidized polyethylene, a styrene-butadiene-styrene block copolymer, sulfur, and asphalt. A hot mix asphalt composition is also provided comprising the modified asphalt composition and aggregate. Processes for producing the modified asphalt composition and the hot mix asphalt composition are also provided as well as articles produced from these inventive compositions.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: February 22, 2011
    Assignees: Westlake Longview Corp., PRI Asphalt Technologies, Inc.
    Inventors: Richard Kingsley Stuart, Jr., Jeffery Lynn Presley, Kenneth Francis Grzybowski