Patents by Inventor Roland W. Lawrence

Roland W. Lawrence 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).

  • Conducting nanotubes or nanostructures based composites, method of making them and applications
    Patent number: 8424200
    Abstract: An electromagnetic interference (EMI) shielding material includes a matrix of a dielectric or partially conducting polymer, such as foamed polystyrene, with carbon nanotubes or other nanostructures dispersed therein in sufficient concentration to make the material electrically conducting. The composite is formed by dispersing the nanotube material in a solvent in which the dielectric or partially conducting polymer is soluble and mixing the resulting suspension with the dielectric or partially conducting polymer. A foaming agent can be added to produce a lightweight foamed material. An organometallic compound can be added to enhance the conductivity further by decomposition into a metal phase.
    Type: Grant
    Filed: December 19, 2006
    Date of Patent: April 23, 2013
    Assignee: University of Virginia Patent Foundation
    Inventors: Mool C. Gupta, Yonglai Yang, Kenneth L. Dudley, Roland W. Lawrence
  • Conducting Nanotubes or Nanostructures Based Composites, Method of Making Them and Applications
    Publication number: 20100000770
    Abstract: An electromagnetic interference (EMI) shielding material includes a matrix of a dielectric or partially conducting polymer, such as foamed polystyrene, with carbon nanotubes or other nanostructures dispersed therein in sufficient concentration to make the material electrically conducting. The composite is formed by dispersing the nanotube material in a solvent in which the dielectric or partially conducting polymer is soluble and mixing the resulting suspension with the dielectric or partially conducting polymer. A foaming agent can be added to produce a lightweight foamed material. An organometallic compound can be added to enhance the conductivity further by decomposition into a metal phase.
    Type: Application
    Filed: December 19, 2006
    Publication date: January 7, 2010
    Applicants: UNIVERSITY OF VIRGINIA PATENT FOUNDATION, THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
    Inventors: Mool C. Gupta, Yonglai Yang, Kenneth L. Dudley, Roland W. Lawrence