Patents by Inventor Wen Tong Chong

Wen Tong Chong 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).

  • Floor tool for a cleaning appliance
    Patent number: D515756
    Type: Grant
    Filed: July 7, 2004
    Date of Patent: February 21, 2006
    Assignee: Dyson Limited
    Inventors: Matthew James Roger Allard, David Benjamin Smith, Simon Nicholas Langham, Wen Tong Chong