Patents by Inventor Linhui Cai

Linhui Cai 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).

  • Bubble gun
    Patent number: D968529
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: November 1, 2022
    Inventor: Linhui Cai
  • Bubble machine
    Patent number: D978974
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: February 21, 2023
    Inventor: Linhui Cai
  • Watermelon bubble machine
    Patent number: D978975
    Type: Grant
    Filed: August 4, 2021
    Date of Patent: February 21, 2023
    Inventor: Linhui Cai
  • Soccer ball bubble machine
    Patent number: D978976
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: February 21, 2023
    Inventor: Linhui Cai
  • Football bubble stick
    Patent number: D984546
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: April 25, 2023
    Inventor: Linhui Cai