Patents by Inventor Alexander Eifert

Alexander Eifert 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).

  • Publication number: 20240006627
    Abstract: The invention relates to a distributor plate (7) for an electrochemical cell (1), the distributor plate (7) having a structure comprising connecting portions (12) with surfaces (13), and main ducts (11) having floor surfaces (33). The surfaces (13) and optionally on the floor surfaces (33) of the secondary ducts (15) are provided with a pattern (92) and the distributor plate (7) has at least two regions (94) in which the patterns (92) on the surfaces (13) differ from one another. The invention further relates to a method for producing the distributor plate (7), an electrochemical cell (1), and a method for operating an electrochemical cell (1).
    Type: Application
    Filed: October 6, 2021
    Publication date: January 4, 2024
    Inventors: Alexander Eifert, Manuel Schneiter, Stefan Klenge, Ulrich Berner, Jan Hendrik Ohs, Veronika Schleper
  • Patent number: 11710832
    Abstract: An electrode material (1) for a fuel cell (50), comprising a planar body (11) made of an electrically conductive foam having an open and continuous porosity for at least one operating medium of the fuel cell (50), wherein the planar body (11) has a top side (12) and a bottom side (13), and wherein the thickness (14) of the material across all points (12a, 12a?) on the surface of the top side (12), measured in each case between a point (12a, 12a?) on the surface of the top side (12) and the point (13a, 13a?) opposite this point (12a, 12a?) on the surface of the bottom side (13), varies by at least 10%.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: July 25, 2023
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Eifert, Claudio Baldizzone, Harald Bauer, Juergen Hackenberg
  • Publication number: 20220029175
    Abstract: The invention relates to a distributor structure (12, 20), particularly a bipolar plate for a stack structure (10) of a fuel cell or of an electrolyser. The distributor structure (12, 20) comprises a channel structure (48) that interacts with at least one polymer membrane (16). The distributor structure (12, 20) is designed as a plastic part (40) that has electrically conductive properties.
    Type: Application
    Filed: November 28, 2019
    Publication date: January 27, 2022
    Inventors: Rainer Seitz, Achim Eisemann, Alexander Eifert, Andre Neidhardt, Arne Stephen Fischer, Christoph Haluschka, Felix Wald, Friedrich Kneule, Jan Hendrik Ohs, Laszlo Hagymasi, Laura Bauer, Rolf Lernbecher, Stefan Grosse, Stefan Schoenbauer
  • Patent number: 11228040
    Abstract: The invention relates to a gas distributor plate for a fuel cell, comprising a first distribution structure for distributing a fuel to a first electrode and a second distribution structure (60) for distributing an oxidation agent to a second electrode. According to the invention, there is at least one wire element (80) in at least one of the distribution structures (60). The invention further relates to a fuel cell, which comprises at least one membrane electrode unit having a first electrode and a second electrode, which are separated from each other by a membrane, and at least one gas distribution plate according to the invention.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: January 18, 2022
    Assignee: ROBERT BOSCH GMBH
    Inventor: Alexander Eifert
  • Publication number: 20220006098
    Abstract: An electrode material (1) for a fuel cell (50), comprising a planar body (11) made of an electrically conductive foam having an open and continuous porosity for at least one operating medium of the fuel cell (50), wherein the planar body (11) has a top side (12) and a bottom side (13), and wherein the thickness (14) of the material across all points (12a, 12a?) on the surface of the top side (12), measured in each case between a point (12a, 12a?) on the surface of the top side (12) and the point (13a, 13a?) opposite this point (12a, 12a?) on the surface of the bottom side (13), varies by at least 10%.
    Type: Application
    Filed: November 6, 2019
    Publication date: January 6, 2022
    Inventors: Alexander Eifert, Claudio Baldizzone, Harald Bauer, Juergen Hackenberg
  • Publication number: 20190341627
    Abstract: The invention relates to a gas distributor plate for a fuel cell, comprising a first distribution structure for distributing a fuel to a first electrode and a second distribution structure (60) for distributing an oxidation agent to a second electrode. According to the invention, there is at least one wire element (80) in at least one of the distribution structures (60). The invention further relates to a fuel cell, which comprises at least one membrane electrode unit having a first electrode and a second electrode, which are separated from each other by a membrane, and at least one gas distribution plate according to the invention.
    Type: Application
    Filed: December 19, 2017
    Publication date: November 7, 2019
    Inventor: Alexander Eifert