Patents by Inventor Feifan Gu

Feifan Gu 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).

  • Hot tub oil absorbing sponge
    Patent number: D984771
    Type: Grant
    Filed: November 3, 2022
    Date of Patent: April 25, 2023
    Inventor: Feifan Gu
  • Hot tub scum absorber
    Patent number: D987927
    Type: Grant
    Filed: November 3, 2022
    Date of Patent: May 30, 2023
    Inventor: Feifan Gu