Patents by Inventor Wyman Stephens

Wyman Stephens 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).

  • High Melt Strength Polystyrene Compositions and Methods of Making and Using Same
    Publication number: 20230365773
    Abstract: A method of making foamed styrenic copolymer comprising reacting the styrenic copolymer with an ionomer to form a composition; and contacting a blowing agent with the composition to form the foamed styrenic polymer. An article formed from a composition comprising a styrenic copolymer, an ionomer and a blowing agent.
    Type: Application
    Filed: May 13, 2022
    Publication date: November 16, 2023
    Inventors: Jayna Brown, Fengkui LI, Wyman Stephens
  • Polyethylene fibers and processes of forming the same
    Patent number: 9556538
    Abstract: Fibers and methods of forming the fibers are described herein. The fibers generally include an ethylene based polymer exhibiting a molecular weight distribution of from about 2 to about 8.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: January 31, 2017
    Assignee: FINA TECHNOLOGY, INC.
    Inventors: Cyril Chevillard, Wyman Stephens, John Ashbaugh, Fengkui Li
  • Polyethylene Fibers and Processes of Forming the Same
    Publication number: 20140048963
    Abstract: Fibers and methods of forming the fibers are described herein. The fibers generally include an ethylene based polymer exhibiting a molecular weight distribution of from about 2 to about 8.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 20, 2014
    Applicant: FINA TECHNOLOGY, INC.
    Inventors: Cyril Chevillard, Wyman Stephens, John Ashbaugh, Fengkui Li
  • Polyethylene fibers and processes of forming the same
    Patent number: 8623982
    Abstract: Fibers and methods of forming the fibers are described herein. The fibers generally include an ethylene based polymer exhibiting a molecular weight distribution of from about 2 to about 8.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: January 7, 2014
    Assignee: Fina Technology, Inc.
    Inventors: Cyril Chevillard, Wyman Stephens, John Ashbaugh, Fengkui Li
  • Polyethylene Fibers and Processes of Forming the Same
    Publication number: 20100136310
    Abstract: Fibers and methods of forming the fibers are described herein. The fibers generally include an ethylene based polymer exhibiting a molecular weight distribution of from about 2 to about 8.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 3, 2010
    Applicant: Fina Technology, Inc.
    Inventors: Cyril Chevillard, Wyman Stephens, John Ashbaugh, Fengkui Li
  • FIBER PROCESSING OF HIGH ETHYLENE LEVEL PROPYLENE-ETHYLENE RANDOM COPOLYMERS BY USE OF NUCLEATORS
    Publication number: 20080061468
    Abstract: A method of processing a high ethylene random copolymer comprising nucleating a high ethylene random copolymer to form a high ethylene polymeric composition, melting and extruding a high ethylene polymeric composition, spinning a high ethylene polymeric composition to form a fiber, cooling the fiber, guiding the fiber with an aspirator, and recovering the fiber.
    Type: Application
    Filed: September 7, 2006
    Publication date: March 13, 2008
    Inventors: Frank Li, John Ashbaugh, Wyman Stephens, Michael A. McLeod