Patents by Inventor Murray D. Nelsen

Murray D. Nelsen 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).

  • High efficiency broadband acoustic resonator and absorption panel
    Patent number: 4421201
    Abstract: A high efficiency broadband acoustic resonator and absorption panel used for reducing engine noise from high bypass fan jet engines mounted on an aircraft. The panel uses a single layer of cellular honeycomb core with a pair of parallel acoustic septums formed internally in the core for attenuating high and medium frequency sounds during all engine operations as well as the low frequency combination tone and "buzzsaw" noise experienced during high power aircraft takeoff and cutback engine power settings.
    Type: Grant
    Filed: September 29, 1981
    Date of Patent: December 20, 1983
    Assignee: The Boeing Company
    Inventors: Murray D. Nelsen, Robert K. Kunze, Jr., Robert F. Olsen, Ira B. Rushwald