Patents by Inventor Hyung Chui Ham

Hyung Chui Ham 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).

  • Catalyst for electrochemical ammonia synthesis and method for producing the same
    Patent number: 10843172
    Abstract: ABSTRACT OF THE DISCLOSURE A catalyst for electrochemical ammonia synthesis incudes a carbon carrier composed of carbon; and 20-65 wt% of iron, copper and sulfur, based on weight of the carbon, supported in the carbon carrier. The catalyst may be coated on an electrode selected from the group consisting of carbon paper, carbon cloth, carbon felt, fluorine- doped tin oxide (FTO) conducting glass, and combinations thereof by spray coating, screen printing or ink jet printing. The catalyst has an ammonia synthesis activity up to several times to several tens of times of the activity of the existing single metal or metal oxide catalysts. Thus, when using the catalyst, it is possible to provide a method for electrochemical ammonia synthesis having an improved ammonia production yield and rate.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 24, 2020
    Assignee: Korea Institute of Science and Technology
    Inventors: Hyun Seo Park, Kahyun Hur, Min-Soek Kim, Jimin Kong, Jong Hyun Jang, Chang Won Yoon, Hyung Chui Ham, Suk Woo Nam, Jonghee Han, Ara Jo