Patents by Inventor Yingjun Ruan

Yingjun Ruan 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).

  • Teaching model
    Patent number: D893617
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: August 18, 2020
    Assignee: HANGZHOU ZT MODEL CO., LTD
    Inventors: Rui Feng, Shaohua Wang, He Jiang, Yingjun Ruan