Patents by Inventor Walter Marx

Walter Marx 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 noise compensation
    Patent number: 7064503
    Abstract: A method is for controlling a multi-phase electrical ship propulsion motor that is supplied with electric energy via a power converter. The ship propulsion motor is preferably a permanently excited motor with at least three windings. The phase currents flowing in the windings are controlled via the power converter to minimize the body noise emitted by the electrical ship propulsion motor.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: June 20, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Walter Marx, Hans-Jürgen Tölle, Reinhard Vogel
  • Active noise compensation
    Publication number: 20040066161
    Abstract: Please replace the Abstract with the attached revised Abstract located at the end of this document.
    Type: Application
    Filed: November 25, 2003
    Publication date: April 8, 2004
    Inventors: Walter Marx, Hans-Juergen Toelle, Reinhard Vogel