Patents by Inventor CHUN-DAL HWANG

CHUN-DAL 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).

  • CYLINDER HEATING DEVICE OF CONDUIT FORMING SYSTEM USING WASTE SYNTHETIC RESIN
    Publication number: 20230067134
    Abstract: Disclosed is a cylinder heating device of a conduit forming system using waste synthetic resin, in which a pipe type unit heater is used rather than a bend type heater to prevent heat loss during heat transfer to a cylinder so that waste synthetic resin in the first and second space parts in the cylinder is melted within a short time as well as the quality of a formed conduit is improved.
    Type: Application
    Filed: September 2, 2021
    Publication date: March 2, 2023
    Applicants: GPR SK Co., Ltd., WES TEC GLOBAL CO., LTD.
    Inventors: Kyoung Young CHOI, CHUN-DAL HWANG