Patents by Inventor Hokwang Ryu

Hokwang Ryu 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).

  • Excavator
    Patent number: D934922
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: November 2, 2021
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Juntae Kim, Seula Choi, Hokwang Ryu, Yoojeung Lim, Eunsook Seo, Sunwook Kwack, Younsik Bae, Nadan Cho
  • Wheel loader
    Patent number: D936707
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: November 23, 2021
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Juntae Kim, Seula Choi, Hokwang Ryu, Yoojeung Lim, Eunsook Seo, Sunwook Kwack, Younsik Bae, Nadan Cho
  • Dump truck
    Patent number: D1006678
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: December 5, 2023
    Assignee: DOOSAN INFRACORE CO., LTD.
    Inventors: Juntae Kim, Nadan Cho, Yoojeung Lim, Eunsook Seo, Sunwook Kwack, Younsik Bae, Hokwang Ryu, Seula Choi
  • Engine front cover for construction machine
    Patent number: D1012133
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: January 23, 2024
    Assignee: HD Hyundai Infracore Co., Ltd.
    Inventors: Dongchul Lee, Hokwang Ryu, Minki Kim, Younsik Bae, Yoojeung Lim, Eunsook Seo, Kwangwee Park, Youngbum Kim
  • Instrument panel for construction machine
    Patent number: D1013738
    Type: Grant
    Filed: May 4, 2022
    Date of Patent: February 6, 2024
    Assignee: HD HYUNDAI INFRACORE CO., LTD.
    Inventors: Younsik Bae, Hokwang Ryu, Dongchul Lee, Minki Kim, Yoojeung Lim, Sunwook Kwack, Kwangwee Park, Jaewoo Bae