Patents by Inventor Lingfei Cao

Lingfei Cao 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).

  • Watch strap
    Patent number: D955256
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: June 21, 2022
    Inventor: Lingfei Cao
  • Watch strap
    Patent number: D975573
    Type: Grant
    Filed: July 9, 2021
    Date of Patent: January 17, 2023
    Inventor: Lingfei Cao
  • Watch strap
    Patent number: D979446
    Type: Grant
    Filed: July 21, 2022
    Date of Patent: February 28, 2023
    Inventor: Lingfei Cao
  • Watch strap
    Patent number: D993066
    Type: Grant
    Filed: January 6, 2023
    Date of Patent: July 25, 2023
    Inventor: Lingfei Cao