Patents by Inventor Duk-Gyu Kim

Duk-Gyu Kim 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).

  • HOT-ROLLED STEEL PLATE HAVING EXCELLENT IMPACT TOUGHNESS OF WELDED ZONE AND METHOD FOR MANUFACTURING SAME
    Publication number: 20240254582
    Abstract: The present invention relates to a steel sheet suitable as a material for transporting oil and gas, more particularly, to a hot-rolled steel sheet having excellent impact toughness in a welded zone after electric resistance welding (ERW), and to a hot-rolled steel sheet having excellent impact toughness at a cryogenic temperature of ?20° C. or lower, that makes the sheet applied in a cold area, and a method for manufacturing same.
    Type: Application
    Filed: August 11, 2021
    Publication date: August 1, 2024
    Applicant: POSCO Co., Ltd
    Inventors: Wan-Keun Kim, Duk-Gyu Kim