Patents by Inventor Felipe Sanchez-Chavez

Felipe Sanchez-Chavez 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).

  • PROCESS TO MODIFY BITUMEN
    Publication number: 20180030276
    Abstract: Provided herein is an asphalt composition comprising or produced from asphalt, a solution of ethylene copolymer dissolved in flux oil or liquid plasticizer, and optionally a sulfur source or acid, wherein the ethylene copolymer comprises repeat units derived from ethylene and from an epoxy-containing comonomer. Further provided are processes for making the solution of ethylene copolymer in flux oil or liquid plasticizer and the asphalt composition comprising or produced from this solution.
    Type: Application
    Filed: February 26, 2016
    Publication date: February 1, 2018
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: James R. De Garavilla, Charles J. DuBois, George Wyatt Prejean, Sara Luisa Reynoso Gomez, Felipe Sanchez-Chavez
  • Composition comprising asphalt and epoxy (Meth)acrylate copolymer
    Publication number: 20070027261
    Abstract: Disclosed is a composition comprising or produced from asphalt, a first ethylene copolymer, and optionally a second ethylene copolymer, a polymer comprising repeat units derived from styrene, a sulfur source, or combinations of two or more thereof wherein the first ethylene copolymer comprises repeat units derived from ethylene and an epoxy-containing comonomer and the second ethylene copolymer comprises ethylene and an ester of an unsaturated carboxylic acid. Also disclosed is a process for making an asphalt composition having improved R&B softening points.
    Type: Application
    Filed: July 28, 2006
    Publication date: February 1, 2007
    Inventors: George Prejean, Felipe Sanchez-Chavez, Gregg Babcock