Patents by Inventor Wonchan Hwang

Wonchan Hwang 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).

  • TUBULAR POLYMER ELECTROLYTE MEMBRANE FUEL CELL STACK
    Publication number: 20230106823
    Abstract: A fuel cell stack including a plurality of fuel cell units having a truncated cone shape and connected in series with each other is proposed. The series connection of the fuel cell units may be made such that a relatively small outer diameter portion of one of the fuel cell units is inserted into a relatively large outer diameter portion of another fuel cell unit adjacent to the one fuel cell unit.
    Type: Application
    Filed: December 8, 2022
    Publication date: April 6, 2023
    Inventors: Yung-Eun Sung, Yong-Hun Cho, Wonchan Hwang