Patents by Inventor Yingfan Zhou

Yingfan Zhou 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).

  • Smart door lock
    Patent number: D990283
    Type: Grant
    Filed: January 12, 2022
    Date of Patent: June 27, 2023
    Inventor: Yingfan Zhou
  • Smart door lock
    Patent number: D998445
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: September 12, 2023
    Inventor: Yingfan Zhou
  • Smart door lock
    Patent number: D1010421
    Type: Grant
    Filed: December 10, 2021
    Date of Patent: January 9, 2024
    Inventor: Yingfan Zhou