Patents by Inventor Josef Rohrmeier

Josef Rohrmeier 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).

  • Method of manufacturing filters
    Patent number: 5919122
    Abstract: A method for the manufacture of filters in which a filter material in the rm of a continuous web is pre-embossed, perforated with a laser beam, and then pleated. The pleated filter element is fixed in a subsequent operation in an apparatus and the perforated scrap areas and are removed from the filter element.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: July 6, 1999
    Assignees: Filterwerk Mann & Hummel GmbH, Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Michael Geiger, Joachim Montnacher, Josef Rohrmeier, Thomas Zink