Patents by Inventor Sun Chuen Tsui

Sun Chuen 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).

  • Projector pen
    Patent number: D559310
    Type: Grant
    Filed: May 10, 2006
    Date of Patent: January 8, 2008
    Assignee: New San Ban Stationery Limited
    Inventor: Sun Chuen Tsui