Patents by Inventor Ka Yin Tsui

Ka Yin Tsui 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).

  • Charger
    Patent number: D782413
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: March 28, 2017
    Inventor: Ka Yin Tsui
  • Charger
    Patent number: D791071
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: July 4, 2017
    Inventor: Ka Yin Tsui
  • Charger
    Patent number: D800059
    Type: Grant
    Filed: September 23, 2015
    Date of Patent: October 17, 2017
    Inventor: Ka Yin Tsui