Patents by Inventor Kwok Wai Kuen

Kwok Wai Kuen 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).

  • Upper housing for a vacuum cleaner
    Patent number: D504548
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: April 26, 2005
    Assignee: The Hoover Company
    Inventors: David W. Moine, Nick M. Bosyi, Robert W. Hecht, Wong Sing Yau, Kwok Wai Kuen
  • Suction nozzle for a vacuum cleaner
    Patent number: D541498
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: April 24, 2007
    Assignee: The Hoover Company
    Inventors: David W. Moine, Nick M. Bosyj, Robert W. Hecht, Wong Sing Yau, Kwok Wai Kuen