Patents by Inventor Wanfen Zheng

Wanfen Zheng 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 machine
    Patent number: D984545
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: April 25, 2023
    Inventor: Wanfen Zheng
  • Bubble machine
    Patent number: D1014642
    Type: Grant
    Filed: September 20, 2023
    Date of Patent: February 13, 2024
    Inventor: Wanfen Zheng
  • Bubble machine
    Patent number: D1028105
    Type: Grant
    Filed: July 25, 2023
    Date of Patent: May 21, 2024
    Inventor: Wanfen Zheng