Patents by Inventor Stephen W. Chung

Stephen W. Chung 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).

  • Hierarchical self-assembled energetic materials and formation methods
    Patent number: 10336661
    Abstract: An energetic nanocomposite includes fuel nanoparticles and oxidizer nanoparticles covalently bonded to negatively charged functionalized graphene sheets. A preferred example includes Al fuel nanoparticles and Bi2O3 nanoparticles. A preferred method of formation mixes a solution of positively charged fuel nanoparticles, positively charged oxidizer nanoparticles, and negatively charged functionalized graphene sheets having functional groups to bond with the positively charged fuel nanoparticles and positively charged oxidizer nanoparticles. Self-assembly of the energetic nanocomposite is permitted over a predetermined time via the attraction and aggregation of the positively charged fuel nanoparticles positively charged oxidizer nanoparticles and negatively charged functionalized graphene sheets. Additional methods and nanocomposites include unfunctionalized graphene sheets, which can be commercial grade sheets.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: July 2, 2019
    Assignee: The Curators of the University of Missouri
    Inventors: Shubhra Gangopadhyay, Stephen W. Chung, Rajagopalan Thiruvengadathan, Clay Stephen Staley, Keshab Gangopadhyay, Kristofer Emile Raymond
  • Passivated metal nanoparticles having an epoxide-based oligomer coating
    Patent number: 9745190
    Abstract: This invention provides metal nanoparticles (e.g., aluminum, chromium, iron and magnesium) having an epoxide-based oligomer coating, compositions thereof, method of making the same, and methods of use thereof, including for energy related applications.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: August 29, 2017
    Assignee: Saint Louis University
    Inventors: Paul Jelliss, Steven Buckner, Stephen W. Chung, Brandon J. Thomas
  • HIERARCHICAL SELF-ASSEMBLED ENERGETIC MATERIALS AND FORMATION METHODS
    Publication number: 20150034220
    Abstract: An energetic nanocomposite includes fuel nanoparticles and oxidizer nanoparticles covalently bonded to negatively charged functionalized graphene sheets. A preferred example includes Al fuel nanoparticles and Bi2O3 nanoparticles. A preferred method of formation mixes a solution of positively charged fuel nanoparticles, positively charged oxidizer nanoparticles, and negatively charged functionalized graphene sheets having functional groups to bond with the positively charged fuel nanoparticles and positively charged oxidizer nanoparticles. Self-assembly of the energetic nanocomposite is permitted over a predetermined time via the attraction and aggregation of the positively charged fuel nanoparticles positively charged oxidizer nanoparticles and negatively charged functionalized graphene sheets. Additional methods and nanocomposites include unfunctionalized graphene sheets, which can be commercial grade sheets.
    Type: Application
    Filed: August 4, 2014
    Publication date: February 5, 2015
    Inventors: Shubhra Gangopadhyay, Stephen W. Chung, Rajagopalan Thiruvengadathan, Clay Stephen Staley, Keshab Gangopadhyay, Kristofer Emile Raymond
  • PASSIVATED METAL NANOPARTICLES HAVING AN EPOXIDE-BASED OLIGOMER COATING
    Publication number: 20120009424
    Abstract: This invention provides metal nanoparticles (e.g., aluminum, chromium, iron and magnesium) having an epoxide-based oligomer coating, compositions thereof, method of making the same, and methods of use thereof, including for energy related applications.
    Type: Application
    Filed: July 7, 2011
    Publication date: January 12, 2012
    Inventors: Paul Jelliss, Steven Buckner, Stephen W. Chung, Brandon J. Thomas