Patents by Inventor Gwang-Sik Jeong

Gwang-Sik Jeong 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).

  • Methods of synthesizing nano-sized tungsten particles by sol-gel process and method of preparing light oil from extra-heavy oil using the synthesized nano-sized tungsten particles
    Patent number: 10376865
    Abstract: Disclosed is a method of synthesizing nano-sized tungsten-silica core-shell particles by a silica-based sol-gel process. According to the method, tungsten-silica nanoparticles are very easy to synthesize by a simple process at ambient pressure and temperature. In addition, tungsten oxide-silica (WOx@SiO2) nanoparticles including tungsten in a stable oxidation state can be synthesized. In the tungsten oxide-silica nanoparticles, the size of the tungsten protected with the silica shell can be maintained in the nanometer range without further processing. Also disclosed is a method of synthesizing nano-sized tungsten oxide (WOx) and tungsten carbide (WC) particles by further processing of the tungsten-silica core-shell particles.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: August 13, 2019
    Assignee: Korea University Research and Business Foundation
    Inventors: Kwan-Young Lee, Chan Hun Kim, Gwang-Sik Jeong, Young Gul Hur
  • METHODS OF SYNTHESIZING NANO-SIZED TUNGSTEN PARTICLES BY SOL-GEL PROCESS AND METHOD OF PREPARING LIGHT OIL FROM EXTRA-HEAVY OIL USING THE SYNTHESIZED NANO-SIZED TUNGSTEN PARTICLES
    Publication number: 20180178203
    Abstract: Disclosed is a method of synthesizing nano-sized tungsten-silica core-shell particles by a silica-based sol-gel process. According to the method, tungsten-silica nanoparticles are very easy to synthesize by a simple process at ambient pressure and temperature. In addition, tungsten oxide-silica (WOx@SiO2) nanoparticles including tungsten in a stable oxidation state can be synthesized. In the tungsten oxide-silica nanoparticles, the size of the tungsten protected with the silica shell can be maintained in the nanometer range without further processing. Also disclosed is a method of synthesizing nano-sized tungsten oxide (WOx) and tungsten carbide (WC) particles by further processing of the tungsten-silica core-shell particles.
    Type: Application
    Filed: October 27, 2017
    Publication date: June 28, 2018
    Applicant: Korea University Research and Business Foundation
    Inventors: Kwan-Young Lee, Chan Hun Kim, Gwang-Sik Jeong, Young Gul Hur