Patents by Inventor Xunjiang Chang

Xunjiang Chang 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).

  • Electric line spool
    Patent number: D1005824
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: November 28, 2023
    Inventor: Xunjiang Chang
  • Double-layer rotatable fan
    Patent number: D1006206
    Type: Grant
    Filed: July 25, 2023
    Date of Patent: November 28, 2023
    Inventor: Xunjiang Chang