Patents by Inventor Zhengcen Hou

Zhengcen Hou 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).

  • Blackhead remover
    Patent number: D909563
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: February 2, 2021
    Inventor: Zhengcen Hou
  • Water flosser
    Patent number: D986411
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: May 16, 2023
    Assignee: Shenzhen Milkang Technology Co., Ltd.
    Inventor: Zhengcen Hou