Patents by Inventor Guifeng Shen

Guifeng Shen 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).

  • Headphone
    Patent number: D890131
    Type: Grant
    Filed: April 7, 2020
    Date of Patent: July 14, 2020
    Inventor: Guifeng Shen
  • Headphone
    Patent number: D899402
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: October 20, 2020
    Inventor: Guifeng Shen
  • Headphone
    Patent number: D914637
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: March 30, 2021
    Inventor: Guifeng Shen