Patents by Inventor Tietz Helga

Tietz Helga 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).

  • Filtering device
    Patent number: 7763172
    Abstract: A filtering device includes a container having an inlet and two or more spindles arranged in the device. Further included are at least two mutually axially offset diaphragm plates mounted on each of the two or more spindles. The two or more spindles are distributed in the container and rotatable relative to the container.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: July 27, 2010
    Assignee: Westfalia Separator AG
    Inventors: Wilfried Mackel, Tietz Helga
  • Filtering device
    Publication number: 20070102338
    Abstract: A filtering device includes a container having an inlet and two or more spindles arranged in the device. Further included are at least two mutually axially offset diaphragm plates mounted on each of the two or more spindles. The two or more spindles are distributed in the container and rotatable relative to the container.
    Type: Application
    Filed: March 11, 2004
    Publication date: May 10, 2007
    Inventors: Wilfried Mackel, Tietz Helga