Patents by Inventor Qianfeng Bai

Qianfeng Bai 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).

  • Hammock stand
    Patent number: D996878
    Type: Grant
    Filed: December 21, 2021
    Date of Patent: August 29, 2023
    Inventor: Qianfeng Bai
  • Projection screen
    Patent number: D1009130
    Type: Grant
    Filed: December 14, 2021
    Date of Patent: December 26, 2023
    Inventor: Qianfeng Bai