Patents by Inventor Hyeon Seok Jang

Hyeon Seok Jang 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: 20240030462
    Abstract: The present invention relates to a method for producing an electrolyte for a vanadium redox flow battery, the method comprising: (a) a step for producing a first vanadium ion solution; (b) a step in which the first vanadium ion solution flows into a first positive electrode electrolyte tank and a first negative electrode electrolyte tank to which a first stack including a positive electrode, a separator, and a negative electrode is connected; (c) a step in which the first vanadium ion solution that has flowed into the positive electrode from the first positive electrode electrolyte tank is oxidized to generate a second vanadium ion solution, and the first vanadium ion solution that has flowed into the negative electrode from the first negative electrode electrolyte tank is reduced to generate a third vanadium ion solution; and (d) a step in which the second vanadium ion solution generated in the positive electrode is reduced into a fourth vanadium ion solution by reacting with a reducing agent.
    Type: Application
    Filed: November 30, 2021
    Publication date: January 25, 2024
    Inventors: Eun Mi Choi, Dae Sik Kim, Jae Hyuk Lee, Hyeon Seok Jang
  • Publication number: 20200044268
    Abstract: A redox flow battery including a plurality of electrically connected stacks is provided. A plurality of stacks are alternately connected by electrical connecting lines, with at least one stack therebetween.
    Type: Application
    Filed: September 28, 2017
    Publication date: February 6, 2020
    Inventors: Hyeon-Seok JANG, Dae-Sik KIM, Dong Hwa HAN, Jin Kyo JEONG, Dong Kyun SEO
  • Patent number: 8797107
    Abstract: A voltage controlled oscillator includes a split ring resonator (SRR) configured to have meta-material characteristics fabricated on a board, and an energy compensation circuit configured to cause resonant oscillation of the SRR. The energy compensation circuit is fabricated in the form of an integrated circuit.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: August 5, 2014
    Assignees: Electronics and Telecommunications Research Institute, Soongsil University-Industry Cooperation Foundation
    Inventors: Dong-Uk Sim, Young Jun Chong, Yong Moon, Hyeon Seok Jang