Patents by Inventor Sin Ming Leung

Sin Ming 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).

  • Design for an oval picture frame
    Patent number: D394159
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: May 12, 1998
    Assignee: Make Wood Industries Limited
    Inventor: Sin Ming Leung
  • Picture frame
    Patent number: D401767
    Type: Grant
    Filed: July 30, 1997
    Date of Patent: December 1, 1998
    Assignee: Make Wood Industries Limited
    Inventor: Sin Ming Leung
  • Picture frame
    Patent number: D401768
    Type: Grant
    Filed: August 26, 1997
    Date of Patent: December 1, 1998
    Assignee: Make Wood Industries Limited
    Inventor: Sin Ming Leung