Patents by Inventor Chengjia Yu

Chengjia Yu 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).

  • Light bulb
    Patent number: D860482
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: September 17, 2019
    Inventor: Chengjia Yu
  • Light bulb
    Patent number: D863608
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: October 15, 2019
    Inventor: Chengjia Yu
  • Light bulb
    Patent number: D907259
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: January 5, 2021
    Inventor: Chengjia Yu
  • Light bulb
    Patent number: D907814
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: January 12, 2021
    Inventor: Chengjia Yu