Patents by Inventor Yihao Dong

Yihao Dong 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).

  • Elbow fitting
    Patent number: D893683
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: August 18, 2020
    Assignee: Ningbo Haoqi Metal Products Co., Ltd.
    Inventor: Yihao Dong
  • Circulation valve
    Patent number: D1137564
    Type: Grant
    Filed: June 11, 2025
    Date of Patent: July 28, 2026
    Inventor: Yihao Dong