Patents by Inventor Hyun Seok Choo

Hyun Seok Choo 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).

  • PERFORMANCE RECOVERY METHOD FOR FUEL CELL STACK
    Publication number: 20150104721
    Abstract: A method for recovering the performance of a fuel cell stack mounted within a vehicle is provided. A method includes a recovery process of continuously applying a predetermined load using a load device when an air supply is stopped and hydrogen is supplied to a fuel cell stack to output current from the fuel cell stack. Further, protons and electrons generated by hydrogen oxidation reaction at an anode are moved to a cathode, to produce hydrogen at the cathode and simultaneously remove oxide on the catalyst surface of the cathode.
    Type: Application
    Filed: December 27, 2013
    Publication date: April 16, 2015
    Applicant: Hyundai Motor Company
    Inventors: Hyun Seok Choo, Dae Keun Chun, Hwan Soo Shin, Sung Keun Lee, Jae Hyuk Lee