Patents by Inventor Wolfram Stolp
Wolfram Stolp 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).
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Patent number: 9680172Abstract: Flow type electrochemical cells are disclosed. The electrochemical cell has an anode half-cell, a cathode half-cell, and permeable separating layer. The half-cells are bounded by side elements. Respective porous electrodes are housed in the half-cells. The permeable separating layer is disposed between the anode half-cell and the cathode half-cell. An electrolyte region connected to an electrolyte feed and an electrolyte outflow region connected to an electrolyte drain are further provided. An electrolyte inflow region and an electrolyte outflow region are disposed on opposite sides of the porous electrodes such that inflowing electrolyte flows through the porous electrode perpendicularly to the permeable separating layer.Type: GrantFiled: August 29, 2013Date of Patent: June 13, 2017Assignee: ThyssenKrupp Industrial Solutions AGInventors: Gregor Damian Polcyn, Niels Bredemeyer, Christoph Roosen, Dmitri Donst, Peter Toros, Peter Woltering, Dirk Hoormann, Philipp Hofmann, Stephan Köberle, Frank Funck, Wolfram Stolp, Bernd Langanke
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Publication number: 20150236363Abstract: Flow type electrochemical cells are disclosed. The electrochemical cell has an anode half-cell, a cathode half-cell, and permeable separating layer. The half-cells are bounded by side elements. Respective porous electrodes are housed in the half-cells. The permeable separating layer is disposed between the anode half-cell and the cathode half-cell. An electrolyte region connected to an electrolyte feed and an electrolyte outflow region connected to an electrolyte drain are further provided. An electrolyte inflow region and an electrolyte outflow region are disposed on opposite side of the porous electrodes such that inflowing electrolyte flows through the porous electrode perpendicularly to the permeable separating layer.Type: ApplicationFiled: August 29, 2013Publication date: August 20, 2015Inventors: Gregor Damian Polcyn, Niels Bredemeyer, Christoph Roosen, Dmitri Donst, Peter Toros, Peter Woltering, Dirk Hoormann, Philipp Hofmann, Stephan Köberle, Frank Funck, Wolfram Stolp, Bernd Langanke
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Patent number: 8444833Abstract: The invention relates to an electrolysis device for cleaning acidic waters which comprises a cathode, an anode, and an ion exchange membrane, wherein the membrane is arranged between the cathode and the anode and is attached at least along the entire circumference of its rim, wherein many inlets and outlets are arranged along the upper and lower rim of the electrolysis device which are linked to the cathode space or to the anode space, in such a way that a plug flow, ideally with a laminar profile, is created in the cathode space and in the anode space.Type: GrantFiled: May 16, 2007Date of Patent: May 21, 2013Assignee: Uhde GmbHInventors: Randolf Kiefer, Karl-Heinz Dulle, Peter Woltering, Stefan Oelmann, Ulf-Steffen Baeumer, Wolfram Stolp
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Patent number: 8057713Abstract: The invention relates to a method for producing electrically conducting nickel oxide surfaces made of nickel-containing material. According to the method, the nickel surface is first degreased and is then roughened for approximately ten minutes in a solution containing about one percent of hydrochloric acid, the process being accelerated by adding hydrogen peroxide solution, resulting in the electrolyte turning green. The nickel surface is briefly wetted, the nickel material is introduced into a solution of 3.5 molar lye to which about ten percent of hydrogen peroxide is added and is kept therein for ten minutes, and the resulting nickel hydroxide surface is dehydrated in a subsequent thermal process and is then further oxidized to obtain nickel oxide. The invention further relates to a conductive boundary layer that is produced according to the method, the electrodes therefrom, and the use thereof in chlorine-alkali electrolysis processes, in fuel cells and storage batteries.Type: GrantFiled: July 9, 2005Date of Patent: November 15, 2011Assignees: UHDE GmbH, Gaskatel Gessellschaft Fuer Gassysteme Durch Katalyse und Elektrochemie mbHInventors: Roland Beckmann, Karl-Heinz Dulle, Peter Woltering, Randolf Kiefer, Frank Holthuis, Frank Funck, Wolfram Stolp, Hans-Joachim Kohnke, Joachim Helmke
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Patent number: 7918974Abstract: The invention relates to an insulating frame of an electrolysis cell having a microstructured internal section allowing the penetration of the electrolyte even if the structured section is partly or completely overlapped by the membrane, and to an electrolysis cell equipped with the same.Type: GrantFiled: April 27, 2007Date of Patent: April 5, 2011Assignee: Uhdenora S.p.A.Inventors: Ulf Bäumer, Randolf Kiefer, Karl Heinz Dulle, Stefan Oelmann, Peter Woltering, Wolfram Stolp
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Publication number: 20100294653Abstract: The invention relates to an electrolysis device for cleaning acidic waters which comprises a cathode, an anode, and an ion exchange membrane, wherein the membrane is arranged between the cathode and the anode and is attached at least along the entire circumference of its rim, wherein many inlets and outlets are arranged along the upper and lower rim of the electrolysis device which are linked to the cathode space or to the anode space, in such a way that a plug flow, ideally with a laminar profile, is created in the cathode space and in the anode space.Type: ApplicationFiled: May 16, 2007Publication date: November 25, 2010Inventors: Randolf Kiefer, Karl-Heinz Dulle, Peter Woltering, Stefan Oelmann, Ulf-Steffen Baeumer, Wolfram Stolp
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Publication number: 20090159435Abstract: The invention relates to an insulating frame of an electrolysis cell having a microstructured internal section allowing the penetration of the electrolyte even if the structured section is partly or completely overlapped by the membrane, and to an electrolysis cell equipped with the same.Type: ApplicationFiled: April 27, 2007Publication date: June 25, 2009Inventors: Ulf Baumer, Randolf Kiefer, Karl Heinz Dulle, Stefan Oelmann, Peter Woltering, Wolfram Stolp
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Publication number: 20080292944Abstract: The invention relates to a method for the production of a gas diffusion electrode from a silver catalyst on a PTFE-substrate. The pore system of the silver catalyst is filled with a moistening filling agent. A dimensionally stable solid body having a particle size greater than the particle size of the silver catalyst is mixed with the silver catalyst. Said compression-stable mass is formed in a first calendar in order to form a homogenous catalyst band. In a second calendar, an electroconductive discharge material is embossed in the catalyst band, and heating takes places between the first and the second calendar by means of a heating device, wherein at least parts of the moistened filling agent are eliminated. The invention also relates to a gas diffusion electrode which is produced according to said method.Type: ApplicationFiled: July 9, 2005Publication date: November 27, 2008Applicants: UHDE GMBH, GASKATEL GESELLSCHAFT FÜR GASSYSTEME DURCH KATALYSInventors: Roland Beckmann, Karl-Heinz Dulle, Peter Woltering, Randolf Kiefer, Frank Funck, Wolfram Stolp, Hans-Joachim Kohnke, Joachim Helmke
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Publication number: 20080280204Abstract: The invention relates to a method for producing electrically conducting nickel oxide surfaces made of nickel-containing material. According to said method, the nickel surface is first degreased and is then roughened for approximately ten minutes in a solution containing about one percent of hydrochloric acid, said process being accelerated by adding hydrogen peroxide solution, resulting in the electrolyte turning green. The nickel surface is briefly wetted, the nickel material is introduced into a solution of 3.5 molar lye to which about ten percent of hydrogen peroxide is added and is kept therein for ten minutes, and the resulting nickel hydroxide surface is dehydrated in a subsequent thermal process and is then further oxidized to obtain nickel oxide. The invention further relates to a conductive boundary layer that is produced according to said method, the electrodes therefrom, and the use thereof in chlorine-alkali electrolysis processes, in fuel cells and storage batteries.Type: ApplicationFiled: July 9, 2005Publication date: November 13, 2008Applicants: UHDE GMBH, Gaskatel Gessellschaft Fuer Gassysteme Durch Katalyse Und Elektrochemie MBHInventors: Roland Beckmann, Karl-Heinz Dulle, Peter Woltering, Randolf Kiefer, Frank Holthuis, Frank Funck, Wolfram Stolp, Hans-Joachim Kohnke, Joachim Helmke