Patents by Inventor Christian Kunath
Christian Kunath 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: 11879083Abstract: In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.Type: GrantFiled: January 3, 2022Date of Patent: January 23, 2024Assignee: Bundesdruckerei GmbHInventors: Christian Kunath, Per Krüger, Alexander Mombrée, Christoph Von Czapiewski
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Publication number: 20220244206Abstract: The proposal relates to a sensor having a solid-state layered structure, including the following elements: a first layer including a semiconductor material; a second layer including a gold material and an oxygen material; and an insulation layer arranged between the first and second layers.Type: ApplicationFiled: April 21, 2022Publication date: August 4, 2022Inventors: Eberhard KURTH, Christian KUNATH
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Publication number: 20220195293Abstract: In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.Type: ApplicationFiled: January 3, 2022Publication date: June 23, 2022Applicant: Bundesdruckerei GmbHInventors: Christian Kunath, Per Krüger, Alexander Mombrée, Christoph Von Czapiewski
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Patent number: 11214734Abstract: In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.Type: GrantFiled: April 2, 2014Date of Patent: January 4, 2022Assignee: Bundesdruckerei GmbHInventors: Christian Kunath, Per Krüger, Alexander Mombrée, Christoph Von Czapiewski
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Patent number: 10365244Abstract: An ion-sensitive structure includes a semiconductor structure and a layer stack disposed on the semiconductor structure having a doped intermediate layer including a doping material and a first metal oxide material. The semiconductor structure is configured to change an electric characteristic based on a contact of the ion-sensitive structure with an electrolyte including ions.Type: GrantFiled: March 18, 2016Date of Patent: July 30, 2019Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Eberhard Kurth, Christian Kunath, Harald Schenk
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Patent number: 9670406Abstract: The present invention relates to a zinc sulphide phosphor and to a process for producing same. The invention further relates to a security document or document of value, to a security feature and to a method for detecting same. The phosphor according to the invention can act as electroluminescent phosphor and thus be excited by an electrical field, and this can result in emission of electroluminescent light in the blue and/or green color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range than 345 nm to 370 nm, and can thus emit photoluminescent light in the blue color region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 310 nm in 335 nm, and can thus emit photoluminescent light in the green color region of the visible spectrum.Type: GrantFiled: December 12, 2014Date of Patent: June 6, 2017Assignees: LEUCHTSTOFFWERK BREITUNGEN GMBH, BUNDESDRUCKEREI GMBHInventors: Detlef Starick, Manfred Paeschke, Sven Roesler, Jakob Kuen, Andreas Deichsel, Christian Kunath, Monika Voh
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Publication number: 20160312115Abstract: The present invention relates to a zinc sulphide phosphor and to a process for producing same. The invention further relates to a security document or document of value, to a security feature and to a method for detecting same. The phosphor according to the invention can act as electroluminescent phosphor and thus be excited by an electrical field, and this can result in emission of electroluminescent light in the blue and/or green colour region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 345 nm to 370 nm, and can thus emit photoluminescent light in the blue colour region of the visible spectrum. The phosphor can moreover be excited by UV radiation in the wavelength range from 310 nm to 335 nm, and can thus emit photoluminescent light in the green colour region of the visible spectrum.Type: ApplicationFiled: December 12, 2014Publication date: October 27, 2016Inventors: Detlef STARICK, Manfred PAESCHKE, Sven ROESLER, Jakob KUEN, Andreas DEICHSEL, Christian KUNATH, Monika VOH
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Publication number: 20160303889Abstract: A security element for a document of value is arranged on a transparent layer such as a film and includes a first periodic, optical structure, for example a grid of lines or a grid of points, which forms a first coating on a first side of the transparent layer, and a second periodic, optical structure, for example a grid of lines or a grid of points, which forms a second coating on the second side, which is disposed opposite the first side of the transparent layer. The first optical structure and the second optical structure overlap such that, as viewed by outside observer at a certain, predetermined viewing angle (?) or lighting angle, the structures show a color-changing effect.Type: ApplicationFiled: November 15, 2013Publication date: October 20, 2016Inventors: Roland GUTMANN, ALEXANDER MOMBREE, MICHAEL KNEBEL, CHRISTIAN KUNATH, JENS EHREKE
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Publication number: 20160274057Abstract: An ion-sensitive structure includes a semiconductor structure and a layer stack disposed on the semiconductor structure having a doped intermediate layer including a doping material and a first metal oxide material. The semiconductor structure is configured to change an electric characteristic based on a contact of the ion-sensitive structure with an electrolyte including ions.Type: ApplicationFiled: March 18, 2016Publication date: September 22, 2016Inventors: Eberhard KURTH, Christian KUNATH, Harald SCHENK
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Patent number: 9383334Abstract: In a method for manufacturing an ion-sensitive structure for an ion-sensitive sensor, first a semiconductor substrate bearing an oxide layer is provided, whereupon a metal oxide layer and a metal layer are deposited and tempered, in order to obtain a layer sequence having a crystallized metal oxide layer and an oxidized and crystallized metal layer on the semiconductor substrate bearing the oxide layer. In such case, the metal oxide layer and the metal layer have a compatible metal element, and the coating thickness dMOX of the metal oxide layer is greater than the coating thickness dMET of the metal layer.Type: GrantFiled: August 20, 2014Date of Patent: July 5, 2016Assignee: Endress+Hauser Conducta GmbH+Co. KGInventors: Christian Kunath, Eberhard Kurth, Torsten Pechstein
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Publication number: 20160053169Abstract: In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.Type: ApplicationFiled: April 2, 2014Publication date: February 25, 2016Inventors: Christian KUNATH, Per KRÜGER, Alexander MOMBRÉE, Christoph VON CZAPIEWSKI
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Publication number: 20150060953Abstract: In a method for manufacturing an ion-sensitive structure for an ion-sensitive sensor, first a semiconductor substrate bearing an oxide layer is provided, whereupon a metal oxide layer and a metal layer are deposited and tempered, in order to obtain a layer sequence having a crystallized metal oxide layer and an oxidized and crystallized metal layer on the semiconductor substrate bearing the oxide layer. In such case, the metal oxide layer and the metal layer have a compatible metal element, and the coating thickness dMOX of the metal oxide layer is greater than the coating thickness dMET of the metal layer.Type: ApplicationFiled: August 20, 2014Publication date: March 5, 2015Inventors: Christian Kunath, Eberhard Kurth, Torsten Pechstein
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Patent number: 8760742Abstract: A method and a device produce an individualized hologram from a generated light beam. According to the method, the light beam is individually modulated in a spatial light modulator, a holographic recording material is arranged relative to a holographic master, and the individually modulated light beam is guided in such a manner that at least part of the individually modulated light beam is refracted and/or reflected on the holographic master and an interference pattern representing the individualized hologram is produced in the holographic recording material. The individually modulated light beam is displaced relative to the holographic recording material and the holographic master to scan the entire holographic master. The recording material is arranged so as to rest on a cylindrical drum or a cylindrical drum segment and the drum is rotated about a drum axis of the drum or the drum segment during scanning of the holographic master.Type: GrantFiled: September 3, 2008Date of Patent: June 24, 2014Assignee: Bundesdruckerei GmbHInventors: André Leopold, Christian Kunath, Jens Ehreke, Gerhard Hochenbleicher, Christian Klepzig, Michael Langgassner
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Patent number: 8736933Abstract: A method produces colored individualized holograms for use as security elements for documents, and to a device for producing individualized holograms. The method generates light formed of different colors, spatially modulates the light, color by color, in an individual manner, optically guides the modulated light such that the light is at least partially refracted and/or reflected on a holographic master and is superposed in a holographic recording material with the modulated non-refracted and/or reflected light, and records the hologram. The light is modulated, color by color and at the same time, by a plurality of spatial light modulators. Every color is associated with its own spatial light modulator and a plurality of monochrome modulated light beams of the plurality of colors is combined in a collinear manner prior to refraction and/or reflection on the holographic master and the superposition in the recording material to give a multicolor exposure light beam.Type: GrantFiled: September 3, 2008Date of Patent: May 27, 2014Assignee: Bundesdruckerei GmbHInventors: André Leopold, Christian Kunath, Jens Ehreke, Gerhard Hochenbleicher, Christian Klepzig, Michael Langgassner
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Patent number: 8461587Abstract: An ion-sensitive sensor with an EIS structure includes: a semiconductor substrate, on which a layer of a substrate oxide 103 is produced; an adapting or matching layer, which is prepared on the substrate oxide; a chemically stable intermediate insulator, which is deposited on the adapting or matching layer; and a sensor layer, which comprises a tantalum oxide or a tantalum oxynitride, and which is applied on the intermediate insulator; wherein the intermediate insulator comprises hafnium oxide or zirconium oxide or a mixture of zirconium oxide and hafnium oxide, and wherein the adapting or matching layer differs in its chemical composition and/or in its structure from the intermediate insulator and from the substrate oxide.Type: GrantFiled: March 15, 2010Date of Patent: June 11, 2013Assignee: Endress + Hauser Conducta Gesellschaft für Mess- und Regeltechnik mbH + Co. KGInventors: Eberhard Kurth, Christian Kunath, Torsten Pechstein
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Publication number: 20120018722Abstract: An ion-sensitive sensor with an EIS structure includes: a semiconductor substrate, on which a layer of a substrate oxide 103 is produced; an adapting or matching layer, which is prepared on the substrate oxide; a chemically stable intermediate insulator, which is deposited on the adapting or matching layer; and a sensor layer, which comprises a tantalum oxide or a tantalum oxynitride, and which is applied on the intermediate insulator; wherein the intermediate insulator comprises hafnium oxide or zirconium oxide or a mixture of zirconium oxide and hafnium oxide, and wherein the adapting or matching layer differs in its chemical composition and/or in its structure from the intermediate insulator and from the substrate oxide.Type: ApplicationFiled: March 15, 2010Publication date: January 26, 2012Applicant: Endress + Hauser Conducta Gesellschaft fur Mess- und Regeltechnik mbH + Co. KGInventors: Eberhard Kurth, Christian Kunath, Torsten Pechstein
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Publication number: 20100265553Abstract: A method produces colored individualized holograms for use as security elements for documents, and to a device for producing individualized holograms. The method generates light formed of different colors, spatially modulates the light, color by color, in an individual manner, optically guides the modulated light such that the light is at least partially refracted and/or reflected on a holographic master and is superposed in a holographic recording material with the modulated non-refracted and/or reflected light, and records the hologram. The light is modulated, color by color and at the same time, by a plurality of spatial light modulators. Every color is associated with its own spatial light modulator and a plurality of monochrome modulated light beams of the plurality of colors is combined in a collinear manner prior to refraction and/or reflection on the holographic master and the superposition in the recording material to give a multicolor exposure light beam.Type: ApplicationFiled: September 3, 2008Publication date: October 21, 2010Applicant: BUNDESDRUCKEREI GMBHInventors: André Leopold, Christian Kunath, Jens Ehreke, Gerhard Hochenbleicher, Christian Klepzig, Michael Langgassner
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Publication number: 20100253987Abstract: A method and a device produce an individualized hologram from a generated light beam. According to the method, the light beam is individually modulated in a spatial light modulator, a holographic recording material is arranged relative to a holographic master, and the individually modulated light beam is guided in such a manner that at least part of the individually modulated light beam is refracted and/or reflected on the holographic master and an interference pattern representing the individualized hologram is produced in the holographic recording material. The individually modulated light beam is displaced relative to the holographic recording material and the holographic master to scan the entire holographic master. The recording material is arranged so as to rest on a cylindrical drum or a cylindrical drum segment and the drum is rotated about a drum axis of the drum or the drum segment during scanning of the holographic master.Type: ApplicationFiled: September 3, 2008Publication date: October 7, 2010Applicant: BUNDESDRUCKEREI GMBHInventors: André Leopold, Christian Kunath, Jens Ehreke, Gerhard Hochenbleicher, Christian Klepzig, Michael Langgassner
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Patent number: 7728363Abstract: A protective structure for a semiconductor sensor integrated in a semiconductor substrate for use in a state that is in direct contact with a measuring medium has a semiconducting layer that is applied to the semiconductor substrate, a metal layer and an insulating layer. The insulating layer is disposed between the semiconducting layer and the metal layer and electrically insulates same.Type: GrantFiled: November 8, 2007Date of Patent: June 1, 2010Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Stephan Sorge, Christian Kunath, Eberhard Kurth
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Publication number: 20080111161Abstract: A protective structure for a semiconductor sensor integrated in a semiconductor substrate for use in a state that is in direct contact with a measuring medium has a semiconducting layer that is applied to the semiconductor substrate, a metal layer and an insulating layer. The insulating layer is disposed between the semiconducting layer and the metal layer and electrically insulates same.Type: ApplicationFiled: November 8, 2007Publication date: May 15, 2008Applicant: Fraunhofer-Gesellschaft zur Forderung der angewandten Forschung e.V.Inventors: Stephan SORGE, Christian KUNATH, Eberhard KURTH