Patents by Inventor Catherine Guigou

Catherine Guigou 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).

  • Method and apparatus for active noise control of high order modes in ducts
    Patent number: 5748750
    Abstract: An active noise control system for effective control of higher order modes of noise propagation within a duct is disclosed. A plurality of error sensors is disposed within an error sensors plane, which plane is perpendicular to the longitudinal axis of the duct. The disclosed process and apparatus minimizes the mean square distance between the points of the area associated to each error sensor. The resulting arrangement of errors sensors optimizes the overall area that the error sensors can control and consequently the global efficiency of the controlling system.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: May 5, 1998
    Assignee: Alumax Inc.
    Inventors: Andre L'Esperance, Martin Bouchard, Bruno Paillard, Catherine Guigou