Patents by Inventor Lizhu Liu

Lizhu Liu 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).

  • Writing board with pen set
    Patent number: D966410
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: October 11, 2022
    Assignee: SHENZHEN ORSEN TECHNOLOGY CO., LTD
    Inventors: Zhitian Li, Haican Zheng, Lizhu Liu
  • Drawing board
    Patent number: D982082
    Type: Grant
    Filed: May 22, 2021
    Date of Patent: March 28, 2023
    Assignee: Meizhou Jincheng e-commerce Co., Ltd.
    Inventors: Zhitian Li, Haican Zheng, Lizhu Liu