Patents by Inventor Ji Guo Qing

Ji Guo Qing 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).

  • Casing for a portable light
    Patent number: D772471
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: November 22, 2016
    Assignee: d.light design, Inc.
    Inventors: Eva Hoffmann, Ji Guo Qing
  • Light casing
    Patent number: D820502
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: June 12, 2018
    Assignee: d.light design, Inc.
    Inventors: Eva Hoffmann, Ji Guo Qing, He Zhi Jun
  • Controller casing
    Patent number: D867283
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: November 19, 2019
    Assignee: d.light design, Inc.
    Inventors: Eva Hoffmann, Ji Guo Qing, He Zhi Jun