Patents by Inventor Rupali Nagar

Rupali Nagar 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).

  • Metal nanoparticle-graphene composites and methods for their preparation and use
    Patent number: 10003084
    Abstract: Methods of forming metal nanoparticle-graphene composites are provided. The methods can include mixing a metal precursor with graphite oxide in the presence of a liquid medium to form a metal precursor-graphite oxide mixture, and exfoliating the graphite oxide and reducing the metal precursor in the metal precursor-graphite oxide mixture to deposit metal nanoparticles on a first major surface of a graphene sheet formed by exfoliation of the graphite oxide.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: June 19, 2018
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Ramaprabhu Sundara, Vinayan Bhaghavathi Parambath, Rupali Nagar
  • Metal-alloy graphene nanocomposites and methods for their preparation and use
    Patent number: 9847534
    Abstract: Methods of forming a metal-alloy graphene nanocomposites are provided. The methods include providing a graphene substrate and forming a conducting polymer layer on a first major surface of the graphene substrate. The methods also include pyrolyzing the conducting polymer layer to form a nitrogen-doped graphene substrate and dispersing a plurality of metal-alloy nanoparticles on a first surface of the nitrogen-doped graphene substrate to form the nanocomposite.
    Type: Grant
    Filed: August 8, 2012
    Date of Patent: December 19, 2017
    Assignee: INDIAN INSTITUTE OF TECHNOLOGY MADRAS
    Inventors: Ramaprabhu Sundara, Vinayan Bhaghavathl Parambath, Rupali Nagar, Rajalakshmi Natarajan
  • METAL NANOPARTICLE-GRAPHENE COMPOSITES AND METHODS FOR THEIR PREPARATION AND USE
    Publication number: 20150255801
    Abstract: Methods of forming metal nanoparticle-graphene composites are provided. The methods can include mixing a metal precursor with graphite oxide in the presence of a liquid medium to form a metal precursor-graphite oxide mixture, and exfoliating the graphite oxide and reducing the metal precursor in the metal precursor-graphite oxide mixture to deposit metal nanoparticles on a first major surface of a graphene sheet formed by exfoliation of the graphite oxide.
    Type: Application
    Filed: June 28, 2013
    Publication date: September 10, 2015
    Inventors: Ramaprabhu Sundara, Vinayan Bhaghavathi Parambath, Rupali Nagar
  • METAL-ALLOY GRAPHENE NANOCOMPOSITES AND METHODS FOR THEIR PREPARATION AND USE
    Publication number: 20150200403
    Abstract: Methods of forming a metal-alloy graphene nanocomposites are provided. The methods include providing a graphene substrate and forming a conducting polymer layer on a first major surface of the graphene substrate. The methods also include pyrolyzing the conducting polymer layer to form a nitrogen-doped graphene substrate and dispersing a plurality of metal-alloy nanoparticles on a first surface of the nitrogen-doped graphene substrate to form the nanocomposite.
    Type: Application
    Filed: August 8, 2012
    Publication date: July 16, 2015
    Applicant: Indian Institute of Technology Madras
    Inventors: Ramaprabhu Sundara, Vinayan Bhaghavathl Parambath, Rupali Nagar, Rajalakshmi Natarajan