Patents by Inventor Ningdong Wang

Ningdong Wang 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).

  • Ear cleaner
    Patent number: D944987
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: March 1, 2022
    Inventor: Ningdong Wang
  • Ear cleaner
    Patent number: D944988
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: March 1, 2022
    Inventor: Ningdong Wang