Patents by Inventor Qingshun Chen

Qingshun Chen 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).

  • Pen for three-dimensional printing
    Patent number: D799489
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: October 10, 2017
    Assignee: PRINT-RITE • UNICORN IMAGE PRODUCTS CO., LTD. OF ZHUHAI
    Inventors: Qingshun Chen, Yannan Yang