Patents by Inventor Huanjie Liu

Huanjie Liu 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).

  • Earphone
    Patent number: D888691
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: June 30, 2020
    Inventor: Huanjie Liu
  • Earphone case
    Patent number: D893184
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: August 18, 2020
    Inventor: Huanjie Liu
  • Earphone case
    Patent number: D893185
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: August 18, 2020
    Inventor: Huanjie Liu