Patents by Inventor Qianqian Xi

Qianqian Xi 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).

  • Shoelace buckle
    Patent number: D998319
    Type: Grant
    Filed: May 4, 2023
    Date of Patent: September 12, 2023
    Inventor: Qianqian Xi
  • Shoelace buckle
    Patent number: D998953
    Type: Grant
    Filed: May 5, 2023
    Date of Patent: September 19, 2023
    Inventor: Qianqian Xi