Patents by Inventor Chenkai Li

Chenkai Li 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).

  • Cleaning machine
    Patent number: D1057087
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: January 7, 2025
    Assignee: Zhejiang Zhengtu Optoelectronic Technology Co., Ltd
    Inventor: Chenkai Li
  • Cleaning machine
    Patent number: D1057327
    Type: Grant
    Filed: March 23, 2023
    Date of Patent: January 7, 2025
    Assignee: Zhejiang Zhengtu Optoelectronic Technology Co., Ltd
    Inventor: Chenkai Li