Patents by Inventor Sondra Hellstrom

Sondra Hellstrom 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).

  • Publication number: 20140109695
    Abstract: Apparatuses and methods, consistent with embodiments herein, are directed to an apparatus having a stretchable substrate and a plurality of nanostructures. While the plurality of nanostructures are adhered to the stretchable substrate, the stretchable substrate and the nanostructures are stretched and/or operate in a stretched mode in which the nanostructures are characterized by a resistance corresponding to a strain imparted due to the stretching. When the substrate is relaxed or the stretching otherwise lessened, the nanostructures continue to be characterized as a function of the strain and the corresponding resistance, with buckled segments of the nanostructures being adhered along a surface of the substrate.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Inventors: Darren Lipomi, Michael Vosgueritchian, Chee-Keong Tee, Sondra Hellstrom, Zhenan Bao
  • Publication number: 20130330559
    Abstract: Various aspects of the present disclosure are directed toward carbon-based electrodes. The carbon-based electrodes include a composition of carbon-based structures treated with an oxide material. The composition is annealed, including application of heat in excess of 200 degrees Celsius, which causes the reduction of the oxide material by electron transfer from the carbon-based structures. Additionally, the annealing facilitates stabilization and conductivity of the electrode.
    Type: Application
    Filed: June 6, 2013
    Publication date: December 12, 2013
    Inventors: Sondra Hellstrom, Michael Vosgueritchian, Zhenan Bao, Myung-Gil Kim
  • Patent number: 8513804
    Abstract: Transparent electrodes are manufactured. In accordance with various example embodiments, a transparent electrode is manufactured by generating a solution including a composite material having nanotubes and a conjugated polymer, in which the nanotubes constitute a majority of the composite material by weight. The conjugated polymer is used to disperse the nanotubes in the solution, and the solution is coated onto a substrate to form an electrode including a network of the carbon nanotubes.
    Type: Grant
    Filed: April 13, 2010
    Date of Patent: August 20, 2013
    Assignee: The Board of Trustees of the Leland Stanford Junior University
    Inventors: Sondra Hellstrom, Zhenan Bao
  • Publication number: 20110248401
    Abstract: Transparent electrodes are manufactured. In accordance with various example embodiments, a transparent electrode is manufactured by generating a solution including a composite material having nanotubes and a conjugated polymer, in which the nanotubes constitute a majority of the composite material by weight. The conjugated polymer is used to disperse the nanotubes in the solution, and the solution is coated onto a substrate to form an electrode including a network of the carbon nanotubes.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 13, 2011
    Inventors: Sondra Hellstrom, Zhenan Bao