Patents by Inventor Ingrid Stepanek-Basset

Ingrid Stepanek-Basset 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).

  • Method and apparatus for determining the length of single-walled carbon nanotubes
    Patent number: 6962092
    Abstract: The present invention is directed to at least one method and at least one apparatus for determining the length of single-wall carbon nanotubes (SWNTs). The method generally comprises the steps of: dispersing a sample of SWNTs into a suitable dispersing medium to form a solvent-suspension of solvent-suspended SWNTs; determining the mean SWNT diameter of the solvent-suspended SWNTs; introducing the solvent-suspended SWNTs into a viscosity-measuring device; obtaining a specific viscosity for the SWNT solvent-suspension; and determining the length of the SWNTs based upon the specific viscosity by solving, for example, the Kirkwood-Auer equation corrected by Batchelor's formula for the drag on a slender cylinder for “L,” to determine the length of the SWNTs.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: November 8, 2005
    Assignee: William Marsh Rice University
    Inventors: Matteo Pasquali, Virginia A. Davis, Ingrid Stepanek-Basset, A. Nicholas G. Parra-Vasquez, Robert H. Hauge
  • METHOD AND APPARATUS FOR DETERMINING THE LENGTH OF SINGLE-WALLED CARBON NANOTUBES
    Publication number: 20050160798
    Abstract: The present invention is directed to at least one method and at least one apparatus for determining the length of single-wall carbon nanotubes (SWNTs). The method generally comprises the steps of: dispersing a sample of SWNTs into a suitable dispersing medium to form a solvent-suspension of solvent-suspended SWNTs; determining the mean SWNT diameter of the solvent-suspended SWNTs; introducing the solvent-suspended SWNTs into a viscosity-measuring device; obtaining a specific viscosity for the SWNT solvent-suspension; and determining the length of the SWNTs based upon the specific viscosity by solving, for example, the Kirkwood-Auer equation corrected by Batchelor's formula for the drag on a slender cylinder for “L,” to determine the length of the SWNTs.
    Type: Application
    Filed: April 30, 2004
    Publication date: July 28, 2005
    Applicant: William Marsh Rice University
    Inventors: Matteo Pasquali, Virginia Davis, Ingrid Stepanek-Basset, A. Nicholas Parra-Vasquez, Robert Hauge