Patents by Inventor Xinqiang Zheng

Xinqiang Zheng 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).

  • Hydraulic lifting jack
    Patent number: D946233
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: March 15, 2022
    Assignee: HANGZHOU YINGJIANG MACHINERY MANUFACTURING CO., LTD.
    Inventors: Xinqiang Zheng, Zhengyang Liu
  • Hydraulic lifting jack
    Patent number: D991616
    Type: Grant
    Filed: July 16, 2020
    Date of Patent: July 4, 2023
    Assignee: HANGZHOU YINGJIANG MACHINERY MANUFACTURING CO., LTD.
    Inventors: Xinqiang Zheng, Zhengyang Liu