Patents by Inventor Guchang Ruan

Guchang Ruan 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).

  • Teleprompter
    Patent number: D958765
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: July 26, 2022
    Assignee: NINGBO GONGYI INDUSTRY AND TRADE CO., LTD.
    Inventor: Guchang Ruan
  • Teleprompter
    Patent number: D962185
    Type: Grant
    Filed: July 8, 2021
    Date of Patent: August 30, 2022
    Assignee: NINGBO GONGYI INDUSTRY AND TRADE CO., LTD.
    Inventor: Guchang Ruan
  • Teleprompter
    Patent number: D969094
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: November 8, 2022
    Assignee: NINGBO GONGYI INDUSTRY AND TRADE CO., LTD.
    Inventor: Guchang Ruan
  • Car door step
    Patent number: D978752
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: February 21, 2023
    Assignee: NINGBO GONGYI INDUSTRY AND TRADE CO., LTD.
    Inventor: Guchang Ruan
  • Wire stripper tool
    Patent number: D1026590
    Type: Grant
    Filed: January 18, 2023
    Date of Patent: May 14, 2024
    Assignee: Ningbo Gongyi Industry and Trade Co., Ltd.
    Inventor: Guchang Ruan