Patents by Inventor Adam M. Yu

Adam M. Yu 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).

  • Window cleaning machine
    Patent number: 7523517
    Abstract: A machine for cleaning a window is provided which may comprise a chassis, window cleaning apparatus or mechanism, and a makeweight wherein the makeweight counterbalances the weight of the window cleaning apparatus by traversing the chassis in the first and second directions as the cleaning apparatus traverses the chassis in the second and first directions, respectively.
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: April 28, 2009
    Assignee: Northrop Grumman Corporation
    Inventor: Adam M. Yu