Patents by Inventor Louis Goudreau

Louis Goudreau 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).

  • Adjustable staircase
    Patent number: 9091083
    Abstract: Disclosed herein is an adjustable staircase wherein each tread of the staircase is suspended from a tread adjustment mechanism. The tread adjustment mechanism allows the coordinated movement of all the treads to a desired rise height, and allows the positioning of the first tread directly on a supporting surface when it is in a fully lowered position.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: July 28, 2015
    Assignee: Ottawa Hospital Research Institute
    Inventor: Louis Goudreau