Patents by Inventor Mario Keller
Mario Keller 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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Publication number: 20230411632Abstract: A method is provided for producing a green paper for producing a gas diffusion layer (GDL) for a fuel cell. A use is described of an accordingly produced gas diffusion layer (GDL) in a fuel cell. A first paper web is loaded with metal powder and/or metal fibers, and a microporous layer (MPL) is in the form of at least one coating is applied onto the paper web. The paper web is then subjected to a binder removal process, a sintering process, a coating process, atomic layer deposition (ALD) using thermal ALD methods, and optionally additional process steps in order to obtain the final GDL. After the sintering process, all of the organic components of the green paper are pyrolyzed and thus no longer contained in the GDL, and the GDL consists virtually exclusively of a metal framework.Type: ApplicationFiled: August 31, 2021Publication date: December 21, 2023Inventors: Mario KELLER, Alexander TANTSCHER, Karlheinz MAYER
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Patent number: 11745474Abstract: A composite glass comprises two glass and/or plastic plates and an intermediate foil arranged between the glass and/or plastic plates. The composite glass, due to the intermediate foil, is configured differently in a side-dependent manner, by appearing to a viewer more transparent from an inner side than from an outer side. The composite glass, due to the intermediate foil, appears to the viewer different in a viewing angle-dependent manner from the outer side.Type: GrantFiled: September 2, 2019Date of Patent: September 5, 2023Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBHInventors: Maik Rudolf Johann Scherer, Raphael Dehmel, Kai Herrmann Scherer, Daniel Lenssen, Michael Rahm, Mario Keller
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Publication number: 20220059374Abstract: The invention relates to a method and a device for mounting and fastening individual elements at predetermined positions on a surface of a moving substrate web. According to the invention, the device has a rotary cylinder or a circulating belt, wherein the rotary cylinder or the circulating belt has an inner side and an outer side and wherein a particular number m of fastening devices are attached to the outer side of the rotary cylinder or of the circulating belt. Here, in each case one fastening device fastens in each case one individual element at in each case one predetermined position on the surface of the moving substrate web.Type: ApplicationFiled: December 3, 2019Publication date: February 24, 2022Inventors: Mario KELLER, Maik Rudolf Johann SCHERER, Michael RAHM
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Publication number: 20220055853Abstract: The invention relates to a method for applying and attaching a defined number n of individual elements to a defined number m of predefined positions on a surface of a moving substrate web. The invention further relates to a moving substrate web onto which a defined number n of individual elements are to be applied and attached to a defined number m of predefined positions on a surface of a moving substrate web. According to the invention, an adhesive is applied to the surface of the substrate web at each of the predefined positions so that respectively at least one individual element can be attached at respectively one predefined position, and no adhesive is applied outside the predefined positions.Type: ApplicationFiled: November 29, 2019Publication date: February 24, 2022Inventors: Mario KELLER, Maik Rudolf Johann SCHERER, Michael RAHM
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Publication number: 20210339504Abstract: A composite glass comprises two glass and/or plastic plates and an intermediate foil arranged between the glass and/or plastic plates. The composite glass, due to the intermediate foil, is configured differently in a side-dependent manner, by appearing to a viewer more transparent from an inner side than from an outer side. The composite glass, due to the intermediate foil, appears to the viewer different in a viewing angle-dependent manner from the outer side.Type: ApplicationFiled: September 2, 2019Publication date: November 4, 2021Inventors: Maik Rudolf Johann SCHERER, Raphael DEHMEL, Kai Herrmann SCHERER, Daniel LENSSEN, Michael RAHM, Mario KELLER
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Patent number: 10486455Abstract: An apparatus for applying security elements, comprises at least one value document substrate transport device for transporting a value document substrate web, at least one security elements transport device for transporting a security elements carrier band having a plurality of security elements, wherein the security elements carrier band has a first and a second main surface which oppose each other, each security element has a first and a second main surface which oppose each other, each security element is arranged with its first main surface on the first main surface of the security elements carrier band, and each security element has adhesive properties at its second main surface, wherein the apparatus has an application region in order to apply the security elements with their second main surface onto the value document substrate web. A security elements carrier band and a value document involve the apparatus.Type: GrantFiled: May 19, 2016Date of Patent: November 26, 2019Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBHInventors: Josef Schinabeck, André Gregarek, Winfried Hoffmüller, Christoph Gebauer, Christoph Mengel, Mario Keller, Matthias Pfeiffer
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Publication number: 20180141370Abstract: An apparatus for applying security elements, comprises at least one value document substrate transport device for transporting a value document substrate web, at least one security elements transport device for transporting a security elements carrier band having a plurality of security elements, wherein the security elements carrier band has a first and a second main surface which oppose each other, each security element has a first and a second main surface which oppose each other, each security element is arranged with its first main surface on the first main surface of the security elements carrier band, and each security element has adhesive properties at its second main surface, wherein the apparatus has an application region in order to apply the security elements with their second main surface onto the value document substrate web. A security elements carrier band and a value document involve the apparatus.Type: ApplicationFiled: May 19, 2016Publication date: May 24, 2018Inventors: Josef SCHINABECK, André GREGAREK, Winfried HOFFMÜLLER, Christoph GEBAUER, Christoph MENGEL, Mario KELLER, Matthias PFEIFFER
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Patent number: 9486719Abstract: A filter element has a multi-layered filter medium web with several layers that is folded along folding lines. The filter medium web has at least one functional region in at least one section located between adjacent folding lines. The at least one functional region is a first embossment. The layers of the filter medium web are firmly bonded to each other along the first embossment. A device for folding a multi-layered filter medium web has an energy-introducing embossing unit that embosses the filter medium web fed by a feed unit to the embossing unit. A folding unit for folding the filter medium web along folding lines is provided. The energy-introducing embossing unit embosses and firmly bonds the layers of the filter medium web along at least one functional region in at least one section of the filter medium web located between adjacent folding lines.Type: GrantFiled: March 19, 2014Date of Patent: November 8, 2016Assignee: MANN+HUMMEL GMBHInventors: Stefan Walz, Mario Keller
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Patent number: 9399366Abstract: The present invention relates to a security element for security papers, value documents and the like, having a micro-optical moiré magnification arrangement having a first motif image that consists of a planar periodic or at least locally periodic arrangement of a plurality of first micromotif elements (38) that produce a hidden piece of image information, and a planar periodic or at least locally periodic arrangement of a plurality of microfocusing elements (34) for the moiré-magnified viewing of the first micromotif elements of the motif image, the first micromotif elements (38) being formed from nematic liquid crystal material and forming a phase-shifting layer for light from a specified wavelength range, and the magnified moiré image being perceptible substantially only upon viewing the security element through a polarizer.Type: GrantFiled: June 16, 2009Date of Patent: July 26, 2016Assignee: Giesecke & Devrient GMBHInventors: Winfried Hoffmuller, Marius Dichtl, Manfred Heim, Mario Keller
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Publication number: 20160051918Abstract: A filter medium is provided with a first filter layer and a second filter layer that is arranged downstream of the first filter layer in a flow-through direction of the filter medium and has nanofibers. The first filter layer has a first filter layer section and a second filter layer section, wherein the second filter layer section is arranged downstream of the first filter layer section in the flow-through direction of the filter medium. The first filter layer section has a first packing density of fibers and the second filter layer section has a second packing density of fibers deviating from the first packing density of fibers.Type: ApplicationFiled: October 23, 2015Publication date: February 25, 2016Inventors: Stefan Walz, Mario Keller, Steffen Pfannkuch, Michael Heim, Ivanka Poljak, Jens Neumann, Alexander Kilian, Gelase Mbadinga Mouanda
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Patent number: 8920663Abstract: A method for producing a security element having microdepressions for security papers, with the microdepressions being colored with a certain color, involves the steps of (a) coating an upper side of a carrier with an embossable layer; (b1) forming microdepressions in the embossable layer to configure an embossed layer; (c) applying the certain color on the upper side, so that the color remains in the microdepressions; (b2) applying a structured protective layer on the coated upper side, wherein the structured protective layer does not cover the microdepressions that are to be colored with the certain color, after step (b1) and before step (c); and removing the structured protective layer and thereby a color toning after step (c).Type: GrantFiled: November 4, 2010Date of Patent: December 30, 2014Assignee: Giesecke & Devrient GmbHInventor: Mario Keller
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Publication number: 20140202123Abstract: A filter element has a multi-layered filter medium web with several layers that is folded along folding lines. The filter medium web has at least one functional region in at least one section located between adjacent folding lines. The at least one functional region is a first embossment. The layers of the filter medium web are firmly bonded to each other along the first embossment. A device for folding a multi-layered filter medium web has an energy-introducing embossing unit that embosses the filter medium web fed by a feed unit to the embossing unit. A folding unit for folding the filter medium web along folding lines is provided. The energy-introducing embossing unit embosses and firmly bonds the layers of the filter medium web along at least one functional region in at least one section of the filter medium web located between adjacent folding lines.Type: ApplicationFiled: March 19, 2014Publication date: July 24, 2014Applicant: MANN+HUMMEL GMBHInventors: Stefan Walz, Mario Keller
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Patent number: 8685488Abstract: The present invention relates to a method for producing a micropattern on a substrate (22), in which a substrate (22) is provided with a relief pattern (26, 28) that exhibits elevations (26) and depressions (28), and in which the elevations (26) and/or depressions (26) are arranged in the form of the desired micropattern, and with a printing tool, an imprint material (30; 34) is transferred to the relief pattern (26, 28), the viscosity of the imprint material (30; 34) being chosen such that the imprint material (30; 34) is selectively transferred either substantially only onto the elevations (26) or substantially only into the depressions (28) of the relief pattern.Type: GrantFiled: December 17, 2008Date of Patent: April 1, 2014Assignee: Giesecke & Devrient GmbHInventors: Winfried Hoffmuller, Theodor Burchard, Marius Dichtl, Patrick Renner, Michael Rahm, Manfred Heim, Lars Hoffmann, Manfred Dotzler, Ralf Liebler, Mario Keller
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Patent number: 8603615Abstract: The present invention relates to a multilayer security element having a first, transparent layer structure having first, translucent sub-regions and a second, opaque layer structure exhibiting a color-shift effect and having second, transparent sub-regions.Type: GrantFiled: July 10, 2008Date of Patent: December 10, 2013Assignee: Giesecke & Devrient GmbHInventor: Mario Keller
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Patent number: 8449969Abstract: The invention relates to a security element for security papers, documents of value, ID cards or the like that is of self-supporting design and has two different security features. The security features are disposed on opposite sides of the security element, at least one the security features being optically variable.Type: GrantFiled: December 17, 2002Date of Patent: May 28, 2013Assignee: Giesecke & Devrient GmbHInventors: Mario Keller, Theo Burchard
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Patent number: 8333870Abstract: The invention relates to a security paper for producing value documents, such as bank notes or the like, which includes a creasable, multilayer substrate having at least one paper layer and at least one film, and to a method for producing such a security paper.Type: GrantFiled: September 18, 2003Date of Patent: December 18, 2012Assignee: Giesecke & Devrient GmbHInventors: Theo Burchard, Mario Keller, Reinhard Tauber, Rudolf Seidler
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Patent number: 8317231Abstract: The present invention relates to a security element (20) for security papers, value documents and the like, having a substrate (22) and an opaque metallization 24, 26) arranged on the substrate. According to the invention in the security element is provided, that the metallization (24, 26) comprises a first opaque metal layer (24) and a second opaque metal layer (26) arranged above the first metal layer (24), and that the two metal layers (24, 26) have substantially the same tone of color in the visible spectral region.Type: GrantFiled: November 8, 2007Date of Patent: November 27, 2012Assignee: Giesecke & Devrient GmbHInventors: Manfred Heim, Bernhard Wiedner, Marius Dichtl, Mario Keller
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Publication number: 20120223050Abstract: A method for producing a security element having microdepressions for security papers, with the microdepressions being colored with a certain color, involves the steps of (a) coating an upper side of a carrier with an embossable layer; (b1) forming microdepressions in the embossable layer to configure an embossed layer; (c) applying the certain color on the upper side, so that the color remains in the microdepressions; (b2) applying a structured protective layer on the coated upper side, wherein the structured protective layer does not cover the microdepressions that are to be colored with the certain color, after step (b1) and before step (c); and removing the structured protective layer and thereby a color toning after step (c).Type: ApplicationFiled: November 4, 2010Publication date: September 6, 2012Inventor: Mario Keller
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Patent number: 7989055Abstract: The invention relates to a security element for security papers, bank notes, ID cards or the like, having at least one plastic layer on which at least two metal layers of different color are so disposed side by side and on the same side of the plastic layer that the different colors are visually checkable.Type: GrantFiled: December 1, 2008Date of Patent: August 2, 2011Assignee: Giesecke & Devrient GmbHInventors: Mario Keller, Theo Burchard, Lars Hoffmann
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Publication number: 20110109078Abstract: The present invention relates to a security element for security papers, value documents and the like, having a micro-optical moiré magnification arrangement having a first motif image that consists of a planar periodic or at least locally periodic arrangement of a plurality of first micromotif elements (38) that produce a hidden piece of image information, and a planar periodic or at least locally periodic arrangement of a plurality of microfocusing elements (34) for the moiré-magnified viewing of the first micromotif elements of the motif image, the first micromotif elements (38) being formed from nematic liquid crystal material and forming a phase-shifting layer for light from a specified wavelength range, and the magnified moiré image being perceptible substantially only upon viewing the security element through a polarizer.Type: ApplicationFiled: June 16, 2009Publication date: May 12, 2011Inventors: Winfried Hoffmuller, Marius Dichtl, Manfred Heim, Mario Keller