Patents by Inventor Sabyasachi Ganguli

Sabyasachi Ganguli 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: 20240029915
    Abstract: An electrically conductive, flexible, strain resilient product is produced by mixing metal coated carbon nanotube networks with a liquid polymeric resin to produce a liquid mixture, and the mixture is cured to produce the product. The networks may include welded junctions between nanotubes formed by depositing and melting metal nanoparticles on the nanotubes to form the metal coating. After the mixing step the liquid mixture may be deposited on a flexible substrate in the form of an electrical circuit. The mixing step may further include mixing the composite with a volatile solvent to produce a selected viscosity. Then, a three-dimensional printer may be used to print the product, such as an electrical circuit, on a substrate. The product is cured in an atmosphere that absorbs the solvent. The conductivity of the mixture may be adjusted by adjusting the weight percentage of the metal coated carbon nanotube networks from 50% to 90%, but a preferred range is between 75% and 85%.
    Type: Application
    Filed: October 5, 2023
    Publication date: January 25, 2024
    Inventors: Sabyasachi Ganguli, Ajit K Roy, Chenggang Chen
  • Patent number: 11817232
    Abstract: An electrically conductive, flexible, strain resilient product is produced by mixing metal coated carbon nanotube networks with a liquid polymeric resin to produce a liquid mixture, and the mixture is cured to produce the product. The networks may include welded junctions between nanotubes formed by depositing and melting metal nanoparticles on the nanotubes to form the metal coating. After the mixing step the liquid mixture may be deposited on a flexible substrate in the form of an electrical circuit. The mixing step may further include mixing the composite with a volatile solvent to produce a selected viscosity. Then, a three-dimensional printer may be used to print the product, such as an electrical circuit, on a substrate. The product is cured in an atmosphere that absorbs the solvent. The conductivity of the mixture may be adjusted by adjusting the weight percentage of the metal coated carbon nanotube networks from 50% to 90%, but a preferred range is between 75% and 85%.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: November 14, 2023
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Sabyasachi Ganguli, Ajit K Roy, Chenggang Chen
  • Publication number: 20220199281
    Abstract: An electrically conductive, flexible, strain resilient product is produced by mixing metal coated carbon nanotube networks with a liquid polymeric resin to produce a liquid mixture, and the mixture is cured to produce the product. The networks may include welded junctions between nanotubes formed by depositing and melting metal nanoparticles on the nanotubes to form the metal coating. After the mixing step the liquid mixture may be deposited on a flexible substrate in the form of an electrical circuit. The mixing step may further include mixing the composite with a volatile solvent to produce a selected viscosity. Then, a three-dimensional printer may be used to print the product, such as an electrical circuit, on a substrate. The product is cured in an atmosphere that absorbs the solvent. The conductivity of the mixture may be adjusted by adjusting the weight percentage of the metal coated carbon nanotube networks from 50% to 90%, but a preferred range is between 75% and 85%.
    Type: Application
    Filed: March 15, 2022
    Publication date: June 23, 2022
    Inventors: Sabyasachi Ganguli, Ajit K Roy, Chenggang Chen
  • Patent number: 11309100
    Abstract: An electrically conductive, flexible, strain resilient product is produced by mixing metal coated carbon nanotube networks with a liquid polymeric resin to produce a liquid mixture, and the mixture is cured to produce the product. The networks may include welded junctions between nanotubes formed by depositing and melting metal nanoparticles on the nanotubes to form the metal coating. After the mixing step the liquid mixture may be deposited on a flexible substrate in the form of an electrical circuit. The mixing step may further include mixing the composite with a volatile solvent to produce a selected viscosity. Then, a three-dimensional printer may be used to print the product, such as an electrical circuit, on a substrate. The product is cured in an atmosphere that absorbs the solvent. The conductivity of the mixture may be adjusted by adjusting the weight percentage of the metal coated carbon nanotube networks from 50% to 90%, but a preferred range is between 75% and 85%.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: April 19, 2022
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Sabyasachi Ganguli, Ajit K Roy, Chenggang Chen
  • Patent number: 10854351
    Abstract: An electrically conductive, flexible, strain resilient product is produced by mixing metal coated carbon nanotube networks with a liquid polymeric resin to produce a liquid mixture, and the mixture is cured to produce the product. The networks may include welded junctions between nanotubes formed by depositing and melting metal nanoparticles on the nanotubes to form the metal coating. After the mixing step the liquid mixture may be deposited on a flexible substrate in the form of an electrical circuit. The mixing step may further include mixing the composite with a volatile solvent to produce a selected viscosity. Then, a three-dimensional printer may be used to print the product, such as an electrical circuit, on a substrate. The product is cured in an atmosphere that absorbs the solvent. The conductivity of the mixture may be adjusted by adjusting the weight percentage of the metal coated carbon nanotube networks from 50% to 90%, but a preferred range is between 75% and 85%.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: December 1, 2020
    Assignee: United States of America as represented by the Secretary of the Air Force
    Inventors: Sabyasachi Ganguli, Ajit K Roy, Chenggang Chen
  • Publication number: 20070292622
    Abstract: The invention relates to a method of forming a dispersion comprising providing functionalized carbon nanotubes with covalently attached hydrophilic species, adding said carbon nanotubes to an aqueous solution of polar solvent, and dispersing said carbon nanotubes in said aqueous solution.
    Type: Application
    Filed: August 4, 2005
    Publication date: December 20, 2007
    Inventors: Lawrence Rowley, Glen Irvin, Charles Anderson, Sabyasachi Ganguli