Patents by Inventor Jinqiang Zhan

Jinqiang Zhan 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).

  • Ruler
    Patent number: D850948
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: June 11, 2019
    Inventor: Jinqiang Zhan
  • Horizontal positioning ruler
    Patent number: D860014
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: September 17, 2019
    Inventor: Jinqiang Zhan
  • Pendant positioning ruler
    Patent number: D874952
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: February 11, 2020
    Inventor: Jinqiang Zhan
  • Opening locator
    Patent number: D896617
    Type: Grant
    Filed: December 23, 2018
    Date of Patent: September 22, 2020
    Inventor: Jinqiang Zhan