Patents by Inventor Markus Lemm

Markus Lemm 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: 7405017
    Abstract: The present invention relates to bipolar plate (1) as well as to a fuel cell assembly (2). The bipolar plate comprises two outer surfaces (3a, 3b) which are electrically connected to one another, for the electrical contacting, as well as the discharge and supply of gases and/or fluids to the surfaces of the fuel cells which are adjacent to the outer surfaces. The bipolar plate comprises a frame (7) open in the central region as well as an inner part (3) arranged in the central reign, wherein the frame and the inner part are elastically connected to one another.
    Type: Grant
    Filed: January 22, 2003
    Date of Patent: July 29, 2008
    Assignee: REINZ-Dichtungs - GmbH
    Inventors: Raimund Strobel, Kurt Hohe, Kai Lemke, Dieter Grafl, Dominique Tasch, Markus Lemm
  • Publication number: 20080138694
    Abstract: The present invention relates to a high-temperature fuel cell system, consisting of a fuel cell stack (1) with a layering of several ceramic fuel cells (2) which in each case are separated from one another by way of interconnect layer (3). The interconnect layers comprise openings for cooling (4) or for the supply (5a) and removal (5b) of media to and from the fuel cells. The fuel cell stack may be set under mechanical compressive stress in the direction (6) of the layering. Elastic bead arrangements (7; 7?) for sealing the openings (4, 5a, 5b) or the electrically active region (10) are provided at least in regions.
    Type: Application
    Filed: May 21, 2004
    Publication date: June 12, 2008
    Applicant: REINZDICHTUNGS-GMBH
    Inventors: Dieter Grafl, Raimund Stroebel, Markus Lemm, Kai Lemke, Joachim Scherer, Bernd Gaugler
  • Publication number: 20070020505
    Abstract: An electrochemical arrangement with at least one distribution structure for introducing and distributing a reactant, which is designed as a composite of several layers, and wherein the distribution structure is led essentially in a plane and is elastic against pressure loading perpendicular to the plane in a controlled manner.
    Type: Application
    Filed: June 18, 2004
    Publication date: January 25, 2007
    Inventors: Dieter Grafl, Raimund Strobel, Markus Lemm, Kai Lemke, Dominique Tasch, Bernd Gaugler
  • Publication number: 20050053824
    Abstract: The invention relates to a fuel cell system (1) which is characterized in that a fuel cell stack (2) comprised of a plurality of intermediate plates is enclosed between two end plates (3) to compress the intermediate plates. At least one end plate (3) has an end plate base (4) and a contact surface plate (5) linked therewith to electrically contact the fuel cell stack. The end plate base (4) is furthermore provided with channel structures (6) designed for a cooling circuit for cooling the fuel cell stack. The end plate is deformed in such a manner that it is capable of applying an even compression to the fuel cell stack and to balance the setting behaviour of the stack and of the end plate.
    Type: Application
    Filed: November 25, 2002
    Publication date: March 10, 2005
    Inventors: Raimund Strobel, Stefan Lohr, Thomas Carle, Dieter Grafl, Dominique Tasch, Markus Lemm
  • Patent number: 6319973
    Abstract: Solvent-free applicable curable coating material containing as binder inorganic polymers and/or organic polymers, cross-linkers and sliding aids.
    Type: Grant
    Filed: July 22, 1999
    Date of Patent: November 20, 2001
    Assignee: Dana Corporation
    Inventors: Markus Lemm, Kai Lemke, Dieter Grafl