Patents by Inventor Dajian Cheng

Dajian Cheng 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).

  • Touchpad keyboard
    Patent number: D816665
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: May 1, 2018
    Inventor: Dajian Cheng
  • Wireless telecontroller
    Patent number: D835074
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: December 4, 2018
    Assignee: SHENZHEN HAOJIEHUA TECHNOLOGY CO., LTD.
    Inventor: Dajian Cheng
  • Wireless presenter
    Patent number: D857017
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: August 20, 2019
    Assignee: SHENZHEN HAOJIEHUA TECHNOLOGY CO., LTD.
    Inventor: Dajian Cheng