Patents by Inventor Ashok Raichur

Ashok Raichur 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).

  • Nano-reinforcement filler material for epoxy resin systems and methods of making the same
    Patent number: 10214620
    Abstract: A method of making a nano-reinforcement filler material for an epoxy resin system for a composite structure is provided. The method includes forming a polymer suspension of polymer nanoparticles suspended in deionized (DI) water, and sonicating the polymer suspension. The method includes forming a graphene oxide (GO) suspension of GO sheets suspended in DI water, and sonicating the GO suspension. The method includes mixing the sonicated polymer suspension and the sonicated GO suspension to obtain a sonicated mixture. The method includes heating the sonicated mixture in an inert atmosphere at an effective temperature, and using an electrostatic process to uniformly wrap individual polymer nanoparticles with individual GO sheets, via an electrostatic interaction reaction, to obtain the nano-reinforcement filler material comprising polymer-GO core-shell nanoparticles. The method includes washing and drying the nano-reinforcement filler material, and using it in the epoxy resin system for the composite structure.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: February 26, 2019
    Assignee: The Boeing Company
    Inventors: Om Prakash, Megha Sahu, Ashok Raichur
  • NANO-REINFORCEMENT FILLER MATERIAL FOR EPOXY RESIN SYSTEMS AND METHODS OF MAKING THE SAME
    Publication number: 20180312647
    Abstract: A method of making a nano-reinforcement filler material for an epoxy resin system for a composite structure is provided. The method includes forming a polymer suspension of polymer nanoparticles suspended in deionized (DI) water, and sonicating the polymer suspension. The method includes forming a graphene oxide (GO) suspension of GO sheets suspended in DI water, and sonicating the GO suspension. The method includes mixing the sonicated polymer suspension and the sonicated GO suspension to obtain a sonicated mixture. The method includes heating the sonicated mixture in an inert atmosphere at an effective temperature, and using an electrostatic process to uniformly wrap individual polymer nanoparticles with individual GO sheets, via an electrostatic interaction reaction, to obtain the nano-reinforcement filler material comprising polymer-GO core-shell nanoparticles. The method includes washing and drying the nano-reinforcement filler material, and using it in the epoxy resin system for the composite structure.
    Type: Application
    Filed: April 28, 2017
    Publication date: November 1, 2018
    Inventors: Om Prakash, Megha Sahu, Ashok Raichur