Patents by Inventor Szu Pui Leung

Szu Pui Leung 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).

  • Calculator with container for stationery kit
    Patent number: D394079
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: May 5, 1998
    Assignee: Stelex Electronics Company Limited
    Inventor: Szu Pui Leung
  • Calculator
    Patent number: D398627
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: September 22, 1998
    Assignee: Stelex Electronics Company Limited
    Inventor: Szu Pui Leung