Patents by Inventor lan C. Stewart

lan C. Stewart 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).

  • Propylene-Based Polymer Additives for Improved Tire Tread Performance
    Publication number: 20170292013
    Abstract: A tire tread composition is disclosed. The tire tread composition includes components, by weight of the composition, within the range from: 5 to 75 wt % of a diene elastomer; 0 to 40 wt % of processing oil; 20 to 80 wt % of filler; a curative agent; and 5 to 30 wt % of a propylene-ethylene-diene terpolymer containing from 2 wt % to 40 wt % of ethylene and/or C4-C20 ?-olefins derived units, from 0.5 to 10 wt % of diene derived units, and having a heat of fusion, as determined by DSC, of from 0 J/g to 80 J/g.
    Type: Application
    Filed: August 31, 2015
    Publication date: October 12, 2017
    Inventors: Edward J. Blok, Anthony J. Dias, Sunny Jacob, lan C. Stewart, Yong Yang, Jingwen Zhang