Patents by Inventor Robert Wagenfeld

Robert Wagenfeld 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).

  • Active gas turbine (jet) engine noise suppression
    Patent number: 5386689
    Abstract: A method and a system for reducing the acoustic levels of internal and external sound fields generated by gas turbine engines has several actuators to generate sound, several sensors to measure the acoustic levels, and one or more controllers, The controllers are adaptive self-learning neural networks that control the actuators to generate sound in order to effect the reduction of the internal and external sound field as measured by the Sensors.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: February 7, 1995
    Assignee: Noises Off, Inc.
    Inventors: Daniel J. Bozich, Robert Wagenfeld