Patents by Inventor Yigen Yang

Yigen Yang 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).

  • Handcuff password chain lock
    Patent number: D1083241
    Type: Grant
    Filed: August 30, 2024
    Date of Patent: July 8, 2025
    Inventor: Yigen Yang
  • Handcuff chain lock
    Patent number: D1093749
    Type: Grant
    Filed: July 24, 2023
    Date of Patent: September 16, 2025
    Inventor: Yigen Yang