Patents by Inventor Andrew Lebovitz

Andrew Lebovitz 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).

  • Exfoliated polymer-clay nanocomposite
    Publication number: 20080176980
    Abstract: A method of producing a polymer-clay nanocomposite comprises providing a supply of polymer-clay mixture, exfoliating the mixture through solid-state shear pulverization in the presence of cooling sufficient to maintain the extruded mixture in the solid state during the pulverization, and discharging the resulting exfoliated mixture. The invention is also directed to a method of producing a polymer hybrid nanocomposite, wherein a component is dispersed throughout a polymer matrix by solid-state shear pulverization of a polymer mixed with the second component.
    Type: Application
    Filed: April 27, 2007
    Publication date: July 24, 2008
    Inventors: John Mark Torkelson, Andrew Lebovitz, Kosmas Kasimatis, Klementina Khait
  • Method of producing an exfoliated polymer-clay nanocomposite through solid-state shear pulverization
    Patent number: 7223359
    Abstract: A method of producing a polymer-clay nanocomposite comprises providing a supply of polymer-clay mixture, exfoliating the mixture through solid-state shear pulverization in the presence of cooling sufficient to maintain the extruded mixture in the solid state during the pulverization, and discharging the resulting exfoliated mixture. The invention is also directed to a method of producing a polymer hybrid nanocomposite, wherein a component is dispersed throughout a polymer matrix by solid-state shear pulverization of a polymer mixed with the second component.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: May 29, 2007
    Assignee: Northwestern University
    Inventors: John Torkelson, Andrew Lebovitz, Kosmas Kasimatis, Klementina Khait
  • Method of producing exfoliated polymer-clay nanocomposite and polymer-clay nanocomposite produced therefrom
    Publication number: 20060178465
    Abstract: A method of producing a polymer-clay nanocomposite comprises providing a supply of polymer-clay mixture, exfoliating the mixture through solid-state shear pulverization in the presence of cooling sufficient to maintain the extruded mixture in the solid state during the pulverization, and discharging the resulting exfoliated mixture. The invention is also directed to a method of producing a polymer hybrid nanocomposite, wherein a component is dispersed throughout a polymer matrix by solid-state shear pulverization of a polymer mixed with the second component.
    Type: Application
    Filed: November 5, 2003
    Publication date: August 10, 2006
    Inventors: John Torkelson, Andrew Lebovitz, Kosmas Kasimatis, Klementina Khait
  • Method of producing exfoliated polymer-clay nanocomposite and polymer-clay nanocomposite produced therefrom
    Publication number: 20050096422
    Abstract: A method of producing a polymer-clay nanocomposite comprises providing a supply of polymer-clay mixture, exfoliating the mixture through solid-state shear pulverization in the presence of cooling sufficient to maintain the extruded mixture in the solid state during the pulverization, and discharging the resulting exfoliated mixture. The invention is also directed to a method of producing a polymer hybrid nanocomposite, wherein a component is dispersed throughout a polymer matrix by solid-state shear pulverization of a polymer mixed with the second component.
    Type: Application
    Filed: November 5, 2003
    Publication date: May 5, 2005
    Inventors: John Torkelson, Andrew Lebovitz, Kosmas Kasimatis, Klementina Khait