Patents by Inventor Gregory E. Keys

Gregory E. Keys 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 for producing a non-woven fabric
    Patent number: 11306415
    Abstract: A process for producing a nonwoven fabric comprising forming a polymer composition comprising a primary polypropylene and at least one secondary polyolefin; in a spunbond process, forming fibers then fabric from the polymer composition; and exposing the fabric to an heating environment within a range from 50° C. to 250° C.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: April 19, 2022
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: William M. Ferry, Luis A. Sotomayor, Gregory E. Keys
  • Polypropylene Nonwoven Fibers, Fabrics and Methods for Making Same
    Publication number: 20200010982
    Abstract: A process for producing a nonwoven fabric comprising forming a polymer composition comprising a primary polypropylene and at least one secondary polyolefin; in a spunbond process, forming fibers then fabric from the polymer composition; and exposing the fabric to an heating environment within a range from 50° C. to 250° C.
    Type: Application
    Filed: April 19, 2017
    Publication date: January 9, 2020
    Inventors: William F. Ferry, Luis A. Sotomayor, Gregory E. Keys
  • Elastic Nonwoven Materials Comprising Propylene-Based and Ethylene-Based Polymers
    Publication number: 20120329351
    Abstract: The present invention relates to elastic nonwoven materials comprising an elastic layer formed from a polymer blend comprising a propylene-based polymer and a minor amount of an ethylene-based polymer. The propylene-based polymer may comprise from about 75 to about 95 wt % propylene and from about 5 to about 25 wt % ethylene and/or a C4-C12 ?-olefin, and may have a triad tacticity greater than about 90% and a heat of fusion less than about 75 J/g. The ethylene-based polymer may comprise from about 65 to about 100 wt % ethylene and from 0 to about 35 wt % of one or more C3-C12 ?-olefins.
    Type: Application
    Filed: June 1, 2012
    Publication date: December 27, 2012
    Inventors: Aspy K. Mehta, Bin Zhao, Galen C. Richeson, Charles R. Harris, Gregory E. Keys