Patents by Inventor Susan Barnes

Susan Barnes 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).

  • Patent number: 8236480
    Abstract: A method for microfabrication of a microfluidic device having sub-millimeter three dimensional relief structures is disclosed. In this method, homogeneous surfaces, which do not exhibit apparent pixel geometry, emerge from the interaction of the overlapping of diffracted light under opaque pixels and the nonlinear polymerization properties of the photoresist material. The method requires a single photolithographic step and allows for the fabrication of microstructures over large areas (centimeters) with topographic modulation of features smaller than 100 micrometers. The method generates topography that is useful in a broad range of microfluidic applications.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: August 7, 2012
    Assignee: The United States of America, as represented by the Secretary of Commere, the National Institute of Standards and Technology
    Inventors: Laurie E. Locascio, Francisco Javier Atencia-Fernandez, Susan Barnes, Jack F. Douglas
  • Publication number: 20090155728
    Abstract: A method for microfabrication of a microfluidic device having sub-millimeter three dimensional relief structures is disclosed. In this method, homogeneous surfaces, which do not exhibit apparent pixel geometry, emerge from the interaction of the overlapping of diffracted light under opaque pixels and the nonlinear polymerization properties of the photoresist material. The method requires a single photolithographic step and allows for the fabrication of microstructures over large areas (centimeters) with topographic modulation of features smaller than 100 micrometers. The method generates topography that is useful in a broad range of microfluidic applications.
    Type: Application
    Filed: May 27, 2008
    Publication date: June 18, 2009
    Inventors: Laurie E. Locascio, Francisco Javier Atencia-Fernandez, Susan Barnes, Jack F. Douglas
  • Publication number: 20080295909
    Abstract: A three dimensional microfluidic device for passive sorting and storing of liquid plugs is provided with homogeneous surfaces from the exposure of a photopolymer through binary masking motifs, i.e., arrays of opaque pixels on a transparency mask. The device includes sub-millimeter three-dimensional relief microstructures to aid in the channeling of fluids. The microstructures have topographically modulated features smaller than 100 micrometers.
    Type: Application
    Filed: May 27, 2008
    Publication date: December 4, 2008
    Inventors: Laurie E. Locascio, Francisco Javier Atencia-Fernandez, Susan Barnes
  • Publication number: 20050011854
    Abstract: A fitment is disclosed intended in particular for a foodstuff container of the type having a mouth sealed by means of a foil adhered to the upper rim of the container. The fitment includes an annular portion for engaging the upper rim of the container so as to retain the fitment on the container and a utensil molded integrally with the annular portion to project outwards from the annular portion. The utensil is connect4ed to the annular portion by means of a hinge so as to permit the utensil to be pivoted into a position in which it lies against one side of the container.
    Type: Application
    Filed: November 1, 2002
    Publication date: January 20, 2005
    Inventors: Peter Clarke, Susan Barnes, David Rickman