Patents Assigned to Sungil Co., Ltd. (SIM)
  • GRP door manufacturing system
    Patent number: 12370754
    Abstract: A GRP door manufacturing system is provided and configured to manufacture a GRP door by attaching a lower GRP door skin to a lower surface of a wood frame, filling urethane into a space within the wood frame, attaching an upper GRP door skin to an upper surface of the wood frame, and then performing thermo-compression for a predetermined time.
    Type: Grant
    Filed: May 24, 2023
    Date of Patent: July 29, 2025
    Assignee: SUNGIL CO., LTD.
    Inventor: Sung Jin Kim
  • Molding apparatus for grp door skin
    Patent number: 12275200
    Abstract: A molding apparatus for a GRP door skin is provided. The molding apparatus is configured to form a GRP door skin of a completed product by molding a GRP door skin in a forming mold, and inserting the formed GRP door skin into a trimming removing part through a robot.
    Type: Grant
    Filed: April 24, 2023
    Date of Patent: April 15, 2025
    Assignee: SUNGIL CO., LTD.
    Inventor: Sung Jin Kim