Patents by Inventor Johannes Grad

Johannes Grad 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 element with filter bellows
    Patent number: 10252208
    Abstract: A filter element for filtering a fluid is provided with a filter bellows made of a filter medium folded along fold edges in a zigzag shape to form folds, wherein the folds extend between oppositely positioned end face edges of the filter bellows. The filter bellows defines a raw side and a clean side of the filter element, wherein a fluid to be filtered flows from the raw side to the clean side. The filter medium has faces that are flowed through by the fluid to be filtered. The filter medium is provided at least on one of the faces that are flowed through with beads extending transversely to the fold edges. In a proper operating state of the filter bellows, the beads effect a flow of at least a portion of the fluid to be filtered in a direction perpendicular to the fold edges.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: April 9, 2019
    Assignee: MANN+HUMMEL GmbH
    Inventors: Johannes Grad, Margarete Drexler, Kathrin Lichtenwalter, Helmut Brenneis, Anton Kreiner, Marius Panzer, Florentin van Uffelen, Andreas Franz
  • Filter Element with Filter Bellows
    Publication number: 20170001138
    Abstract: A filter element for filtering a fluid is provided with a filter bellows made of a filter medium folded along fold edges in a zigzag shape to form folds, wherein the folds extend between oppositely positioned end face edges of the filter bellows. The filter bellows defines a raw side and a clean side of the filter element, wherein a fluid to be filtered flows from the raw side to the clean side. The filter medium has faces that are flowed through by the fluid to be filtered. The filter medium is provided at least on one of the faces that are flowed through with beads extending transversely to the fold edges. In a proper operating state of the filter bellows, the beads effect a flow of at least a portion of the fluid to be filtered in a direction perpendicular to the fold edges.
    Type: Application
    Filed: June 3, 2016
    Publication date: January 5, 2017
    Inventors: Johannes Grad, Margarete Drexler, Kathrin Lichtenwalter, Helmut Brenneis, Anton Kreiner, Marius Panzer, Florentin van Uffelen, Andreas Franz