Patents by Inventor Defan Li

Defan Li 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).

  • Screwdriver set with key ring
    Patent number: D945850
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: March 15, 2022
    Inventor: Defan Li
  • Dog harness
    Patent number: D1093758
    Type: Grant
    Filed: June 4, 2024
    Date of Patent: September 16, 2025
    Inventor: Defan Li