Patents by Inventor Werner Sternad

Werner Sternad 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).

  • Filter comprising rotatable, disk-shaped filter elements
    Patent number: 7396464
    Abstract: The invention concerns a device for the separation of substances, in particular of solid substances, liquid phases of varied density and/or of gases, from a liquid, by rotation with several filtering elements, which permit the filtered liquid to pass through and which are rotatably supported around a rotational axis inside of a housing, said housing exhibiting an inlet opening for the liquid, at least one discharge opening for the heavy substances separated by rotation and at least one discharge opening for the filtered liquid. In accordance with the invention, a throughflow is provided, in the region or in the proximity of the rotational axis of the filtering elements, for substances exhibiting a density lower than that of the liquid.
    Type: Grant
    Filed: October 28, 2002
    Date of Patent: July 8, 2008
    Assignee: Fraunhofer-Gesellschaft zur Forderung Der Angewandten Forschung E.V.
    Inventors: Werner Sternad, Walter Trosch, Lothar Schreiner
  • Water treatment unit
    Patent number: 7037429
    Abstract: The invention at hand relates to an improved wastewater treatment plant consisting of a reactor and a filter device, such as for gaining drinking water or wastewater treatment.
    Type: Grant
    Filed: January 27, 2001
    Date of Patent: May 2, 2006
    Assignee: Fraunhofer-Gesellschaft zur Förderung derangewandten Forschung e.V.
    Inventors: Ursula Schliebmann, Walter Trosch, Werner Sternad, Nobert Stroh
  • Filter comprising rotatable, disk-shaped filter elements
    Publication number: 20050029183
    Abstract: The invention concerns a device for the separation of substances, in particular of solid substances, liquid phases of varied density and/or of gases, from a liquid, by rotation with several filtering elements (5, 6, 7), which permit the filtered liquid to pass through and which are rotatably supported around a rotational axis (3) inside of a housing (1), said housing exhibiting an inlet opening (28) for the liquid, at least one discharge opening (44) for the heavy substances separated by rotation and at least one discharge opening (32) for the filtered liquid. In accordance with the invention, a throughflow (48) is provided, in the region or in the proximity of the rotational axis (3) of the filtering elements, for substances exhibiting a density lower than that of the liquid.
    Type: Application
    Filed: November 7, 2001
    Publication date: February 10, 2005
    Inventors: Werner Sternad, Walter Trosch, Lothar Schreiner
  • Method and apparatus of increasing the service life of metalworking fluids
    Publication number: 20030038086
    Abstract: A method of increasing the service life of metal working fluids by at least partially inactivating microorganisms in the metalworking fluids includes heating metal working fluids to at least the minimum temperature at which the microorganisms are inactivated on reaching a pre-determined cell density of organic microorganisms.
    Type: Application
    Filed: August 2, 2002
    Publication date: February 27, 2003
    Applicant: DaimlerChrysler AG.
    Inventors: Kai Krueger, Johann Mehlstaeubl, Werner Sternad, Iris Trick