Patents by Inventor Zengdong Zhang

Zengdong Zhang 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).

  • Hair drier
    Patent number: D930899
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: September 14, 2021
    Inventor: Zengdong Zhang
  • Hair dryer
    Patent number: D1028345
    Type: Grant
    Filed: June 27, 2022
    Date of Patent: May 21, 2024
    Inventor: Zengdong Zhang
  • Hair dryer
    Patent number: D1055375
    Type: Grant
    Filed: February 14, 2023
    Date of Patent: December 24, 2024
    Inventor: Zengdong Zhang