Patents by Inventor Thomas Lisec
Thomas Lisec 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: 11931714Abstract: An apparatus includes a substrate having a recess and a multitude of particles arranged in the recess. A first portion of the particles is joined to a porous structure by means of a coating. A second portion of the particles is not joined by means of the coating. The first portion of the particles is arranged closer to an opening of the recess than the second portion of the particles so that a leaking of the second portion of the particles from the recess through the opening is prevented.Type: GrantFiled: May 17, 2021Date of Patent: March 19, 2024Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Thomas Lisec, Steffen Chemnitz, Bernhard Wagner
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Publication number: 20240065109Abstract: A method for manufacturing a magnetic field sensor chip with an integrated back-bias magnet is described. A substrate with a first substrate surface and an opposite second substrate surface is provided, wherein at least one magnetic field sensor is arranged in a first substrate surface. A cavity is structured into the second substrate surface. The method involves generating the integrated back-bias magnet within the first cavity by introducing loose powder comprising a magnetic material into the first cavity and agglomerating the powder to a mechanically firm magnetic body structure by means of atomic layer deposition. According to the method, the step of generating the back-bias magnet is carried out temporally after the step of arranging the magnetic field sensor.Type: ApplicationFiled: August 17, 2023Publication date: February 22, 2024Inventors: Thomas LISEC, Björn GOJDKA, Hans-Peter HOHE, Daniel CICHON, Markus STAHL-OFFERGELD
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Publication number: 20240006264Abstract: An apparatus includes a substrate and a heat source structure connected to the substrate and configured to provide a heat quantity. Furthermore, a porous body including connected particles is provided, wherein gaps between the particles form fluidically connected cavities. The porous body is configured to at least partially receive the heat quantity of the heat source structure.Type: ApplicationFiled: September 15, 2023Publication date: January 4, 2024Inventors: Thomas LISEC, Malte PAESLER, Holger KAPELS, Bjoern GOJDKA
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Patent number: 11742123Abstract: A method of producing an oppositely magnetized magnetic structure within or on a substrate material includes: generating first and second numbers of cavities within or on a substrate material and filling the first and second numbers of cavities with first and second hard magnetic materials, respectively exhibiting first and second coercive field strengths, wherein the second coercive field strength is smaller than the first coercive field strength. The method further includes magnetizing, in a first direction, the first and second arrangements of magnetic structures, by a magnetic field having a field strength that exceeds the first and second coercive field strengths. The method further magnetizes the second arrangement of hard magnetic structures in a second direction, which differs from the first direction, by a second magnetic field having a field strength below the first coercive field strength but greater than the second coercive field strength.Type: GrantFiled: July 2, 2020Date of Patent: August 29, 2023Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Thomas Lisec, Fabian Lofink
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Patent number: 11589169Abstract: A MEMS sound transducer includes a substrate, a membrane formed within the substrate, and a bending actuator applied onto the membrane. The membrane includes at least one integrated permanent magnet and is electrodynamically controllable. The bending actuator can be piezoelectrically controlled separately from the membrane.Type: GrantFiled: December 3, 2019Date of Patent: February 21, 2023Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Malte Florian Niekiel, Fabian Stoppel, Thomas Lisec
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Patent number: 11417448Abstract: A method for manufacturing a device having a three-dimensional magnetic structure includes applying or introducing magnetic particles onto or into a carrier element. A plurality of at least partly interconnected cavities are formed between the magnetic particles, which contact one another at points of contact, by coating the arrangement of magnetic particles and the carrier. The cavities are penetrated at least partly by the layer generated when coating, resulting in the three-dimensional magnetic structure. A conductor loop arrangement is provided on the carrier or a further carrier. When a current flows through the conductor loop, an inductance of the conductor loop is changed by the three-dimensional magnetic structure, or a force acts on the three-dimensional magnetic structure or the conductor loop by a magnetic field caused by the current flow, or when the position of the three-dimensional magnetic structure is changed, a current flow is induced through the conductor loop.Type: GrantFiled: June 13, 2017Date of Patent: August 16, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Thomas Lisec, Hans-Joachim Quenzer, Tim Reimer
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Publication number: 20220155103Abstract: A microsystem has a first support element and a second support element, wherein a relative position of the first support element and the second support element among each other is variable. The microsystem has a permanent-magnetic unit connected to the first support element in a mechanically fixed manner and configured to generate a magnetic field. Additionally, the microsystem has a sensor unit connected to the second support element in a mechanically fixed manner and configured to detect the magnetic field and provide a sensor signal which is based on the magnetic field. The sensor signal indicates a relative position of the support elements among one another.Type: ApplicationFiled: February 7, 2022Publication date: May 19, 2022Inventors: Thomas LISEC, Malte Florian NIEKIEL, Shanshan GU-STOPPEL, Fabian LOFINK
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Patent number: 11268122Abstract: A method of producing a device includes providing a substrate which has a recess. A multitude of loose particles is introduced into the recess. A first portion of the particles is coated by using a coating process having a depth of penetration which extends from an opening of the recess, along a direction of depth, and into the recess, so that the first portion is connected to form a solidified porous structure. The depth of penetration of the coating process which extends into the recess is set such that a second portion of the particles is not connected by means of the coating, and such that the solidified first portion of the particles is arranged between the second portion of the particles and surroundings of the recess. According to the invention, the second portion of the particles is at least partly removed from the recess.Type: GrantFiled: August 17, 2017Date of Patent: March 8, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der anaewandten Forschunq e.V.Inventors: Thomas Lisec, Fabian Lofink
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Publication number: 20210380402Abstract: A MEMS system includes a first permanent-magnetic microstructure and a second permanent-magnetic microstructure. The first permanent-magnetic microstructure is movable along a first direction. The second permanent-magnetic microstructure is arranged to be spaced apart from the first permanent-magnetic microstructure, wherein, by moving the first permanent-magnetic microstructure along the first direction, the second permanent-magnetic microstructure or one or more elements of the second permanent-magnetic microstructure are either moved or actuated in a second direction or undergo rotation.Type: ApplicationFiled: June 21, 2021Publication date: December 9, 2021Inventors: Malte Florian NIEKIEL, Fabian LOFINK, Thomas LISEC
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Publication number: 20210371270Abstract: A MEMS includes a substrate having an element movably suspended relative to the substrate, the element having a first main surface and an opposite second main surface. The MEMS includes a first spring element connected between the substrate and a first column structure connected to the second main surface, and includes a second spring element connected between the substrate and a second column structure connected to the second main surface.Type: ApplicationFiled: August 10, 2021Publication date: December 2, 2021Inventors: Shanshan GU-STOPPEL, Malte Florian NIEKIEL, Thomas LISEC, Fabian LOFINK
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Patent number: 11137364Abstract: This invention provides a microsystem comprising a porous thermal insulation body composed of particles of low thermal conductivity. The porous body isolates and stabilizes the microsystem.Type: GrantFiled: September 27, 2017Date of Patent: October 5, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Thomas Lisec, Hans-Joachim Quenzer
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Publication number: 20210268470Abstract: An apparatus includes a substrate having a recess and a multitude of particles arranged in the recess. A first portion of the particles is joined to a porous structure by means of a coating. A second portion of the particles is not joined by means of the coating. The first portion of the particles is arranged closer to an opening of the recess than the second portion of the particles so that a leaking of the second portion of the particles from the recess through the opening is prevented.Type: ApplicationFiled: May 17, 2021Publication date: September 2, 2021Inventors: Thomas LISEC, Steffen CHEMNITZ, Bernhard WAGNER
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Patent number: 11040325Abstract: An apparatus includes a substrate having a recess and a multitude of particles arranged in the recess. A first portion of the particles is joined to a porous structure by means of a coating. A second portion of the particles is not joined by means of the coating. The first portion of the particles is arranged closer to an opening of the recess than the second portion of the particles so that a leaking of the second portion of the particles from the recess through the opening is prevented.Type: GrantFiled: October 9, 2017Date of Patent: June 22, 2021Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Thomas Lisec, Steffen Chemnitz, Bernhard Wagner
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Publication number: 20210082611Abstract: A method of producing an oppositely magnetized magnetic structure within or on a substrate material includes: First and second numbers of cavities are generated within or on a substrate material and are filled with first and second hard magnetic materials, respectively, exhibiting first and second coercive field strengths, respectively, so as to produce first and second arrangements of hard magnetic structures, respectively, the second coercive field strength being smaller than the first coercive field strength. The first and second arrangements of hard magnetic structures are magnetized in a first direction by a first magnetic field exhibiting a field strength which exceeds the first and second coercive field strengths. The second arrangement of hard magnetic structures is magnetized in a second direction, which differs from the first direction, by a second magnetic field exhibiting a field strength which falls below the first coercive field strength but exceeds the second coercive field strength.Type: ApplicationFiled: July 2, 2020Publication date: March 18, 2021Inventors: Thomas LISEC, Fabian LOFINK
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Patent number: 10854223Abstract: A device and to a method of producing a device, wherein the method includes, inter alia, providing a substrate and generating at least two mutually spaced-apart cavities within the substrate. In accordance with the invention, each cavity has a depth of at least 50 ?m. The cavities are filled up with magnetic particles, wherein the magnetic particles enter into contact with one another at points of contact, and wherein cavities are formed between the points of contact. At least some of the magnetic particles are connected to one another at their points of contact, specifically by coating the magnetic particles, wherein the cavities are at least partly penetrated by the layer produced in the coating process, so that the connected magnetic particles form a magnetic porous structure.Type: GrantFiled: August 17, 2017Date of Patent: December 1, 2020Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Thomas Lisec, Fabian Lofink
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Publication number: 20200178000Abstract: A MEMS sound transducer includes a substrate, a membrane formed within the substrate, and a bending actuator applied onto the membrane. The membrane includes at least one integrated permanent magnet and is electrodynamically controllable. The bending actuator can be piezoelectrically controlled separately from the membrane.Type: ApplicationFiled: December 3, 2019Publication date: June 4, 2020Inventors: Malte Florian NIEKIEL, Fabian STOPPEL, Thomas LISEC
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Patent number: 10647915Abstract: A converter assembly for converting a primary light into a secondary light includes at least one element which has a light-converting structure with open pores and which is laterally held by a frame. The surfaces of both the light-converting structure as well as of the inner face of the frame are covered with a transparent layer such that each of the afore-mentioned elements forms a region in which a property of the incident light and preferably of the wavelength thereof is changed. In specific embodiments, the converter assembly can be part of display assemblies or of miniaturized components for example. There is also described a method for producing the converter assembly.Type: GrantFiled: December 13, 2016Date of Patent: May 12, 2020Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Ulrich Hofmann, Hans-Joachim Quenzer, Thomas Lisec, Thomas Von Wantoch
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Publication number: 20190331626Abstract: This invention provides a microsystem comprising a porous thermal insulation body composed of particles of low thermal conductivity. The porous body isolates and stabilizes the microsystem.Type: ApplicationFiled: September 27, 2017Publication date: October 31, 2019Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Thomas LISEC, Hans-Joachim QUENZER
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Patent number: 10373790Abstract: A micro-electro-mechanical system includes a deflectable actuator plate and an abutment area. An integral piezoelectric functional layer of the deflectable actuator plate is configured across an area APS of the actuator plate. The deflectable actuator plate is configured to effect a hollow warp in at least a controlled or non-controlled state, wherein the abutment area is disposed facing a hollow side of the deflectable actuator plate defined by the hollow warp. The deflectable actuator plate is configured to provide, in the state in which the same effects the hollow warp, mechanical contact between the deflectable actuator plate and the abutment area. In the other state, the deflectable actuator plate is disposed spaced apart from the abutment area.Type: GrantFiled: August 12, 2016Date of Patent: August 6, 2019Assignee: Fraunhofe-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Thomas Lisec, Fabian Stoppel
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Publication number: 20180371315Abstract: A converter assembly for converting a primary light into a secondary light includes at least one element which has a light-converting structure with open pores and which is laterally held by a frame. The surfaces of both the light-converting structure as well as of the inner face of the frame are covered with a transparent layer such that each of the afore-mentioned elements forms a region in which a property of the incident light and preferably of the wavelength thereof is changed. In specific embodiments, the converter assembly can be part of display assemblies or of miniaturized components for example. There is also described a method for producing the converter assembly.Type: ApplicationFiled: December 13, 2016Publication date: December 27, 2018Inventors: ULRICH HOFMANN, HANS-JOACHIM QUENZER, THOMAS LISEC, THOMAS VON WANTOCH