Patents by Inventor Ulrich Altenhofen

Ulrich Altenhofen 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).

  • Drying screen for paper making machine
    Patent number: 5609936
    Abstract: A drying screen for paper making machines is described which comprises at least one layer of a thread composite and a thin glued-on, perforated or slit sheet i.e., with thermoplastic material-comprising filaments. The individual layers are preferably connected to one another in three layers and arranged one above the other, with the layer facing the paper web always being oriented in the direction of paper travel.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: March 11, 1997
    Assignee: Wurttembergische Filztuchfabrik D. Geschmay GmbH
    Inventors: Ernst Kohler, Bernd Sabrowski, Ulrich Altenhofen