Patents by Inventor Ashok Kumar Sundramoorthy

Ashok Kumar Sundramoorthy 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: 10676392
    Abstract: Described are carbon nanotube dispersions containing single-walled carbon nanotubes dispersed in a dispersant solution comprising a solvent (water, organic polar protic solvents, and/or organic polar aprotic solvents), and an azo compound. The single-walled carbon nanotubes are not cross-linked with covalent bonds. The dispersions are useful for fabricating transparent conductive thin films on flexible and inflexible substrates. Methods for making the transparent conductive thin films are also described.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: June 9, 2020
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Sundaram Gunasekaran, Ashok Kumar Sundramoorthy
  • Publication number: 20170129804
    Abstract: Described are carbon nanotube dispersions containing single-walled carbon nanotubes dispersed in a dispersant solution comprising a solvent (water, organic polar protic solvents, and/or organic polar aprotic solvents), and an azo compound. The single-walled carbon nanotubes are not cross-linked with covalent bonds. The dispersions are useful for fabricating transparent conductive thin films on flexible and inflexible substrates. Methods for making the transparent conductive thin films are also described.
    Type: Application
    Filed: January 20, 2017
    Publication date: May 11, 2017
    Inventors: Sundaram Gunasekaran, Ashok Kumar Sundramoorthy
  • Patent number: 9428392
    Abstract: A method of enriching specific species of carbon nanotubes by exposing a composition of carbon nanotubes to an azo compound is provided. The method includes a) mixing the azo compound with a suspension comprising the composition of carbon nanotubes to form a mixture; b) incubating the mixture to react the azo compound with the carbon nanotubes; and c) separating a supernatant and a precipitate formed in the mixture. An electrode and a field-effect transistor comprising a single-walled carbon nanotube species enriched using the method are also provided.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: August 30, 2016
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Bee Eng Mary Chan, Ashok Kumar Sundramoorthy
  • Publication number: 20150318070
    Abstract: Described are carbon nanotube dispersions containing single-walled carbon nanotubes dispersed in a dispersant solution comprising a solvent (water, organic polar protic solvents, and/or organic polar aprotic solvents), and an azo compound. The single-walled carbon nanotubes are not cross-linked with covalent bonds. The dispersions are useful for fabricating transparent conductive thin films on flexible and inflexible substrates. Methods for making the transparent conductive thin films are also described.
    Type: Application
    Filed: May 1, 2015
    Publication date: November 5, 2015
    Inventors: Sundaram Gunasekaran, Ashok Kumar Sundramoorthy
  • Publication number: 20140308194
    Abstract: A method of enriching specific species of carbon nanotubes by exposing a composition of carbon nanotubes to an azo compound is provided. The method includes a) mixing the azo compound with a suspension comprising the composition of carbon nanotubes to form a mixture; b) incubating the mixture to react the azo compound with the carbon nanotubes; and c) separating a supernatant and a precipitate formed in the mixture. An electrode and a field-effect transistor comprising a single-walled carbon nanotube species enriched using the method are also provided.
    Type: Application
    Filed: October 25, 2012
    Publication date: October 16, 2014
    Inventors: Bee Eng Mary Chan, Ashok Kumar Sundramoorthy