Patents by Inventor Daniel Vennerberg

Daniel Vennerberg 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, apparatus, and system for producing buckypaper or similar sheet or layer of elongated nanostructures with a degree of nanostructure alignment
    Patent number: 10351430
    Abstract: A method, apparatus, and system for fabricating buckypaper or similar sheets of nanostructures having relatively high aspect ratios. A dispersion of nanostructures such as nanotubes is subjected to fluid dynamics/forces which promote alignment of their axes of elongation while in suspension in the flow. An agglomeration of better aligned nanostructures is isolated from the carrier fluid into a useable form. In the case of nanotubes, one form is buckypaper. One example of alignment forces is Taylor-Couette flow shear forces. One example of isolation is filtering the flowing dispersion to collect better aligned nanostructures across the filter into a sheet or film. The degree of alignment can produce anisotropic material properties that can be beneficially used in application of the sheet or film.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: July 16, 2019
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Michael R. Kessler, Daniel Vennerberg
  • Method, apparatus, and system for producing buckypaper or similar sheet or layer of elongated nanostructures with a degree of nanostructure alignment
    Patent number: 9926201
    Abstract: A method, apparatus, and system for fabricating buckypaper or similar sheets of nanostructures having relatively high aspect ratios. A dispersion of nanostructures such as nanotubes is subjected to fluid dynamics/forces which promote alignment of their axes of elongation while in suspension in the flow. An agglomeration of better aligned nanostructures is isolated from the carrier fluid into a useable form. In the case of nanotubes, one form is buckypaper. One example of alignment forces is Taylor-Couette flow shear forces. One example of isolation is filtering the flowing dispersion to collect better aligned nanostructures across the filter into a sheet or film. The degree of alignment can produce anisotropic material properties that can be beneficially used in application of the sheet or film.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: March 27, 2018
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Michael R. Kessler, Daniel Vennerberg