Patents by Inventor Stefan Schumann

Stefan Schumann 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: 12454459
    Abstract: A process can be used for the functionalization of graphene material by mixing graphene material with at least one silane. The functionalized graphene material is useful, for example, in thermoplastics.
    Type: Grant
    Filed: June 15, 2021
    Date of Patent: October 28, 2025
    Assignee: Evonik Operations GmbH
    Inventors: Valeri Leich, Jonas Hönig, Julian Teichmann, Silvia Blank-Shim, Stefan Schumann, Verena Breuers, Patrik Stenner
  • Publication number: 20240351883
    Abstract: A polyalkylene oxide having at least one aromatic radical is a dispersant for a graphene material. A process for dispersing graphene material is developed where the abovementioned polyalkylene oxides are employed as the dispersant. Compositions including the abovementioned dispersant and graphene material are produced.
    Type: Application
    Filed: June 29, 2022
    Publication date: October 24, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Kathrin LEHMANN, Stefan Schumann, Valeri Leich, Verena Breuers, Jonas Hönig, Lea Muchajer, Thorsten Hoven, Peter Seidensticker
  • Publication number: 20240301147
    Abstract: A process can be used for production of trans-polyoctenamer-graphene composite material having a high filler content, from a trans-polyoctenamer and graphene material. The highly filled trans-polyoctenamer-graphene composite material is useful, for example, in the automotive sector, in heat exchangers, in housings, encapsulations, plain bearings, in 3-D printing heads for heat removal, injection moulded parts, electronics applications, hose systems, membranes, fuel cells, cable systems, indoor and sports apparel, EM protection, and orthopaedics.
    Type: Application
    Filed: December 23, 2021
    Publication date: September 12, 2024
    Applicant: EVONIK OPERATIONS GMBH
    Inventors: Valeri LEICH, Alexander Paasche, Stefan Schumann, Dorothea Spannenkrebs, Alexey Merkulov, Verena Breuers, Christian Däschlein, Uwe Paulmann, Jonas Hönig
  • Publication number: 20230264961
    Abstract: A process can be used for the functionalization of graphene material by mixing graphene material with at least one silane. The functionalized graphene material is useful, for example, in thermoplastics.
    Type: Application
    Filed: June 15, 2021
    Publication date: August 24, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Valeri Leich, Jonas Hönig, Julian Teichmann, Silvia Blank-Shim, Stefan Schumann, Verena Breuers, Patrik Stenner
  • Publication number: 20220240808
    Abstract: An electrochemical method and an electrochemical sensor for breath analysis of single or multiple analytes using a porous, preferably flexible and disposable supporting material is provided, a salt is incorporated, and which can be wetted in contact with the exhaled breath condensate. The electrochemical method acting simultaneously as sampling method, as an electrolyte and as a support for the electrode structures. In some embodiments the salt may be hygroscopic, such that the porous substrate stays wet. To ensure that the obtained signal originates from the analyte, the electrochemical sensor preferably exhibits a differential electrode design, including a sensing (analyte-sensitive) and a blank (analyte-insensitive) electrode in order to isolate and remove the background signals.
    Type: Application
    Filed: May 20, 2020
    Publication date: August 4, 2022
    Applicants: Albert-Ludwigs-Universitat Freiburg, Imperial College London
    Inventors: Can Dincer, Elmar Laubender, Daniela Maier, Stefan Schumann, Gerald Urban, Firat Guder
  • Patent number: 10748714
    Abstract: The present invention relates to a process for the production of a layered body (1), at least comprising the process steps: I) provision of a photoactive layer comprising a material having a perovskite type crystal structure; II) superimposing the photoactive layer at least partially with a coating composition A) comprising an electrically conductive polymer a) and an organic solvent b); III) at least partial removal of the organic solvent b) from the coating composition A) superimposed in process step II), thereby obtaining an electrically conductive layer superimposed on the photoactive layer. The present invention also relates to a layered body obtainable by this process, to dispersions, to an electronic device, to a process for the preparation of a photovoltaic device and to the photovoltaic device that is obtainable by this process.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: August 18, 2020
    Assignee: HERAEUS DEUTSCHLAND GMBH & CO. KG
    Inventors: Stefan Schumann, Andreas Elschner, Armin Sautter, Wilfried Lövenich, Rüdiger Sauer, Jan Sütterlin, Nina Kausch-Busies
  • Publication number: 20200013559
    Abstract: The present invention relates to a process for the production of a layered body (1), at least comprising the process steps: I) provision of a photoactive layer comprising a material having a perovskite type crystal structure; II) superimposing the photoactive layer at least partially with a coating composition A) comprising an electrically conductive polymer a) and an organic solvent b); III) at least partial removal of the organic solvent b) from the coating composition A) superimposed in process step II), thereby obtaining an electrically conductive layer superimposed on the photoactive layer. The present invention also relates to a layered body obtainable by this process, to dispersions, to an electronic device, to a process for the preparation of a photovoltaic device and to the photovoltaic device that is obtainable by this process.
    Type: Application
    Filed: September 16, 2019
    Publication date: January 9, 2020
    Inventors: Stefan Schumann, Andreas Elschner, Armin Sautter, Wilfried Lövenich, Rüdiger Sauer, Jan Sütterlin, Nina Kausch-Busies
  • Patent number: 10468198
    Abstract: The present invention relates to a process for the production of a layered body (1), at least comprising the process steps: I) provision of a photoactive layer comprising a material having a perovskite type crystal structure; II) superimposing the photoactive layer at least partially with a coating composition A) comprising an electrically conductive polymer a) and an organic solvent b); III) at least partial removal of the organic solvent b) from the coating composition A) superimposed in process step II), thereby obtaining an electrically conductive layer superimposed on the photoactive layer. The present invention also relates to a layered body obtainable by this process, to dispersions, to an electronic device, to a process for the preparation of a photovoltaic device and to the photovoltaic device that is obtainable by this process.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: November 5, 2019
    Assignee: HERAEUS DEUTSCHLAND GMBH & CO. KG
    Inventors: Stefan Schumann, Andreas Elschner, Armin Sautter, Wilfried Lovenich, Rüdiger Sauer, Jan Sütterlin, Nina Kausch-Busies
  • Patent number: 10283715
    Abstract: The present invention relates to a composition comprising: a) at least one organic solvent; b) at least one conductive polymer, preferably a cationic polymer; c) at least one fluorinated compound; d) at least one polymeric anion, wherein the at least one polymeric anion is a copolymer comprising ionic and non-ionic repeating units. The present invention also relates to a layered structure comprising the composition, to a process for the production of the composition, to a process for the production of the layered structure and to devices comprising the layered structure as well as to the use of the composition in devices to achieve a prolongation of lifetime.
    Type: Grant
    Filed: March 9, 2016
    Date of Patent: May 7, 2019
    Assignee: HERAEUS DEUTSCHLAND GMBH & CO. KG
    Inventors: Stefan Schumann, Nina Kausch-Busies, Wilfried Lövenich, Jan Sütterlin, Andreas Elschner, Arnulf Scheel
  • Publication number: 20180182965
    Abstract: The present invention relates to a composition comprising: a) at least one organic solvent; b) at least one conductive polymer, preferably a cationic polymer; c) at least one fluorinated compound; d) at least one polymeric anion, wherein the at least one polymeric anion is a copolymer comprising ionic and non-ionic repeating units. The present invention also relates to a layered structure comprising the composition, to a process for the production of the composition, to a process for the production of the layered structure and to devices comprising the layered structure as well as to the use of the composition in devices to achieve a prolongation of lifetime.
    Type: Application
    Filed: March 9, 2016
    Publication date: June 28, 2018
    Inventors: Stefan Schumann, Nina Kausch-Busies, Wilfried Lövenich, Jan Sütterlin, Andreas Elschner, Arnulf Scheel
  • Publication number: 20170365418
    Abstract: The present invention relates to a process for the production of a layered body (1), at least comprising the process steps: I) provision of a photoactive layer comprising a material having a perovskite type crystal structure; II) superimposing the photoactive layer at least partially with a coating composition A) comprising an electrically conductive polymer a) and an organic solvent b); III) at least partial removal of the organic solvent b) from the coating composition A) superimposed in process step II), thereby obtaining an electrically conductive layer superimposed on the photoactive layer. The present invention also relates to a layered body obtainable by this process, to dispersions, to an electronic device, to a process for the preparation of a photovoltaic device and to the photovoltaic device that is obtainable by this process.
    Type: Application
    Filed: November 17, 2015
    Publication date: December 21, 2017
    Inventors: Stefan Schumann, Andreas Elschner, Armin Sautter, Wilfried Lövenich, Rüdiger Sauer, Jan Seuring, Nina Kausch-Busies
  • Publication number: 20160056397
    Abstract: Described is a process for the preparation of a layered body, the process comprising the steps: I) providing a photoactive layer; II) superimposing the photoactive layer with a coating composition comprising a) an electrically conductive polymer, b) an organic solvent; and III) at least partially removing the organic solvent b) from the composition obtaining an electrically conductive layer superimposing the photoactive layer. Also described is a layered body obtained by this process, a layered body, an organic photovoltaic cell, a solar cell module, a composition, and the use of a composition.
    Type: Application
    Filed: March 27, 2014
    Publication date: February 25, 2016
    Inventors: Stefan SCHUMANN, Andreas ELSCHNER, Detlef GAISER, Wilfried LÖVENICH, Daniel VOIGHT
  • Patent number: 7369059
    Abstract: An electrical power distribution device such as a junction box or the like includes a status indicator that also serves not only to indicate the status of energization of a connector mounted in a first housing opening, but also to illuminate a translucent indicia-bearing plate mounted in second housing opening. The housing contains a chamber in which are mounted a light emitting diode that is energized simultaneously with the connector, and a light transmitting member that directs the light produced by the LED toward the second housing opening.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: May 6, 2008
    Assignee: Weidmüller Interface GmbH & Co. KG
    Inventors: Andreas Hoffmann, Andreas Muhs, Hermann Krause, Jürgen Ziemke, Klaus Püschner, Michael Schnatwinkel, Ralf Schumacher, Stefan Reker, Stefan Schumann, Ulrike Klasing
  • Publication number: 20070040698
    Abstract: An electrical power distribution device such as a junction box or the like includes a status indicator that also serves not only to indicate the status of energization of a connector mounted in a first housing opening, but also to illuminate a translucent indicia-bearing plate mounted in second housing opening. The housing contains a chamber in which are mounted a light emitting diode that is energized simultaneously with the connector, and a light transmitting member that directs the light produced by the LED toward the second housing opening.
    Type: Application
    Filed: December 2, 2005
    Publication date: February 22, 2007
    Inventors: Andreas Hoffmann, Andreas Muhs, Hermann Krause, Jurgen Ziemke, Klaus Puschner, Michael Schnatwinkel, Ralf Schumacher, Stefan Reker, Stefan Schumann, Ulrike Klasing