Patents by Inventor Stefan Tudyka

Stefan Tudyka 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).

  • Patent number: 8557009
    Abstract: A method of manufacturing a ceramic diesel particle filter (DPF) and a DPF manufactured by the method, the DPF having a ceramic filter body (1) including gas channels (18, 18?) with planar and porous filter segments (3), which are provided for the exhaust gas stream (2) to flow through them transversely to the face of the filter segments (3). The filter body (1) is formed by sintering at least one ceramic-impregnated fiber web (4) in a firing step under heat such that fibers (5) of the fiber material are burned off and the ceramic material (6) is sintered together to form the porous filter segment (3) between its two surfaces (7, 8). At least one fiber web (4) is corrugated to form the gas channels (18, 18?) and rolled up to form the filter body (1), and the cross section of at least a portion of the gas channels (18, 18?) changes from an inlet end (33) to a discharge end (34).
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 15, 2013
    Assignee: Mann+Hummel GmbH
    Inventors: Karin Gerlach, Stefan Tudyka, Jochen Linhart, Andreas Franz
  • Publication number: 20110173939
    Abstract: A method of manufacturing a ceramic diesel particle filter (DPF) and a DPF manufactured by the method, the DPF having a ceramic filter body (1) including gas channels (18, 18?) with planar and porous filter segments (3), which are provided for the exhaust gas stream (2) to flow through them transversely to the face of the filter segments (3). The filter body (1) is formed by sintering at least one ceramic-impregnated fiber web (4) in a firing step under heat such that fibers (5) of the fiber material are burned off and the ceramic material (6) is sintered together to form the porous filter segment (3) between its two surfaces (7, 8). At least one fiber web (4) is corrugated to form the gas channels (18, 18?) and rolled up to form the filter body (1), and the cross section of at least a portion of the gas channels (18, 18?) changes from an inlet end (33) to a discharge end (34).
    Type: Application
    Filed: February 24, 2011
    Publication date: July 21, 2011
    Applicant: MANN+HUMMEL GMBH
    Inventors: Karin GERLACH, Stefan TUDYKA, Jochen LINHART, Andreas FRANZ
  • Patent number: 7913377
    Abstract: A method of producing a ceramic filter element suitable for use in an exhaust filter for an internal combustion engine, during which a combustible, non-ceramic support web is impregnated with a ceramic slip and formed into a desired geometric shape in either order, and then the impregnated and formed web is fired until the support web is burned out and a rigid ceramic filter body is formed.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: March 29, 2011
    Assignee: Mann + Hummel GmbH
    Inventors: Karin Gerlach, Stefan Tudyka
  • Publication number: 20070186911
    Abstract: A method of producing a ceramic filter element suitable for use in an exhaust filter for an internal combustion engine, during which a combustible, non-ceramic support web is impregnated with a ceramic slip and formed into a desired geometric shape in either order, and then the impregnated and formed web is fired until the support web is burned out and a rigid ceramic filter body is formed.
    Type: Application
    Filed: January 10, 2007
    Publication date: August 16, 2007
    Applicant: Mann & Hummel GmbH
    Inventors: Karin Gerlach, Stefan Tudyka
  • Patent number: 6551369
    Abstract: The invention relates to the area of ceramics and to a ceramic flat membrane which is configured as a multi-channel element. The aim of the invention is to provide a ceramic flat membrane with a larger effective membrane surface. To this end, the inventive ceramic flat membrane consists of at least two layers of at least two sub-layers of different porosity, at least one of these layers having a non-planar geometry. The two layers are joined to each other with at least spot joins and integral joins. The invention also provides a method for producing a flat membrane of this type. According to this method, suspensions are produced from at least two ceramic powders of different particle size. Two sub-layers are formed from the suspensions, then dried and joined to form one layer.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: April 22, 2003
    Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Jörg Adler, Reinhard Lenk, Hans-Jürgen Richter, Regina Stockmann, Daniel Tocha, Norbert Stroh, Stefan Tudyka