Patents by Inventor Stefan Leonhardt
Stefan Leonhardt 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: 12600083Abstract: A system for electro-spinning/writing of a polymer material, the system comprising a print-head configured to eject the polymer material via a nozzle, a collector configured to receive the polymer material ejected from the nozzle, a displacement assembly configured to adjust a distance between the print-head and the collector, and a vat containing or configured to contain a liquid, wherein the vat is further configured to receive the collector, wherein the displacement assembly is configured to retract the collector and at least a part of the polymer material received by the collector into the liquid in the vat in accordance with a height of the received polymer material.Type: GrantFiled: December 1, 2021Date of Patent: April 14, 2026Assignee: TECHNISCHE UNIVERSITÄT MÜNCHENInventors: Kilian Müller, Sarah Burkhardt, Stefan Leonhardt, Sebastian Tobias Pammer, Petra Mela, Johannes Schweiger
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Patent number: 12515401Abstract: A system for electro-writing of a polymer melt comprises a print-head and a feed mechanism configured to controllably feed solid polymer base material towards the print-head, wherein the print-head comprises a nozzle, a heater and an insulating spacer, wherein the print-head is configured to eject the polymer melt via the nozzle, wherein the nozzle is configured to be held at a selectable electric potential, wherein the heater is arranged in the print-head and proximate the nozzle, wherein the heater is configured to heat the solid polymer base material beyond its melting point to create the polymer melt in the print-head, wherein insulating spacer is arranged between the heater and the nozzle, wherein the insulating spacer electrically insulates the heater and the nozzle, and wherein the insulating spacer is at least partially surrounded by the heater.Type: GrantFiled: December 7, 2021Date of Patent: January 6, 2026Assignee: TECHNISCHE UNIVERSITÄT MÜNCHENInventors: Kilian Müller, Sarah Burkhardt, Petra Mela, Stefan Leonhardt, Sebastian Tobias Pammer, Johannes Schweiger
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Patent number: 12343936Abstract: The present disclosure relates to a print head for an additive manufacturing system, in particular for a 3D printer, comprising at least one temperature control element, in particular a cooling element, which is arranged adjacent to the print head. The present disclosure further relates to an additive manufacturing system, in particular a 3D printer, comprising at least one print head.Type: GrantFiled: July 28, 2020Date of Patent: July 1, 2025Assignee: KUMOVIS GMBHInventors: Stefan Fischer, Miriam Haerst, Stefan Leonhardt, Sebastian Pammer
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Publication number: 20250001693Abstract: The present invention relates to a method of producing a component by means of an additive production method, including at least the following steps: —a production plan for the component is generated from digital data; —the component is analyzed regarding its structure and/or its production parameters in respect of the temperature in the component during production; and —a supplementary structure is added to the component at those places where the analysis reveals that the structure and/or the production parameters would result in an inhomogeneous temperature distribution during production. The present invention further relates to a component produced by means of an additive production method.Type: ApplicationFiled: November 9, 2022Publication date: January 2, 2025Inventors: Sebastian PAMMER, Stefan LEONHARDT, Yannick KRIEGER, Arnaud BRUYAS
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Publication number: 20240285417Abstract: The present invention relates to a trial implant, in particular for spinal surgery, a total knee or hip endoprosthesis or a shoulder prosthesis, with at least one head, with at least one reinforcing core and with at least one stem, wherein the head is produced by means of 3D printing, and wherein the head and the stem are made of plastic.Type: ApplicationFiled: June 24, 2022Publication date: August 29, 2024Inventors: Stefan LEONHARDT, Sebastian PAMMER
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Publication number: 20240122715Abstract: The present disclosure relates to a 3D-printed semi-finished part for manufacturing at least one medical implant or medical instrument, the semi-finished part including: at least one functional feature provided at a predefined location of the semi-finished part.Type: ApplicationFiled: October 11, 2023Publication date: April 18, 2024Inventors: Arnaud Bruyas, Yannick Krieger, Stefan Leonhardt, Sebastian Pammer
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Publication number: 20240100771Abstract: A system for electro-writing of a polymer melt comprises a print-head and a feed mechanism configured to controllably feed solid polymer base material towards the print-head, wherein the print-head comprises a nozzle, a heater and an insulating spacer, wherein the print-head is configured to eject the polymer melt via the nozzle, wherein the nozzle is configured to be held at a selectable electric potential, wherein the heater is arranged in the print-head and proximate the nozzle, wherein the heater is configured to heat the solid polymer base material beyond its melting point to create the polymer melt in the print-head, wherein insulating spacer is arranged between the heater and the nozzle, wherein the insulating spacer electrically insulates the heater and the nozzle, and wherein the insulating spacer is at least partially surrounded by the heater.Type: ApplicationFiled: December 7, 2021Publication date: March 28, 2024Inventors: Kilian MÜLLER, Sarah BURKHARDT, Petra MELA, Stefan LEONHARDT, Sebastian Tobias PAMMER, Johannes SCHWEIGER
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Publication number: 20240001606Abstract: A system for electro-spinning/writing of a polymer material, the system comprising a print-head configured to eject the polymer material via a nozzle, a collector configured to receive the polymer material ejected from the nozzle, a displacement assembly configured to adjust a distance between the print-head and the collector, and a vat containing or configured to contain a liquid, wherein the vat is further configured to receive the collector, wherein the displacement assembly is configured to retract the collector and at least a part of the polymer material received by the collector into the liquid in the vat in accordance with a height of the received polymer material.Type: ApplicationFiled: December 1, 2021Publication date: January 4, 2024Inventors: Kilian MÜLLER, Sarah BURKHARDT, Stefan LEONHARDT, Sebastian Tobias PAMMER, Petra MELA, Johannes SCHWEIGER
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Publication number: 20230390996Abstract: The present invention relates to an additive manufacturing device, in particular a 3D printer, for producing at least one layered component, having at least one building chamber, having at least one extrusion head which can be moved three-dimensionally within the building chamber and having a control device for control of the extrusion head in such a way that at least a first material layer of the component can be formed by the extrusion head by forming one or more infill material strands, in particular in at least one first two-dimensional plane; in that at least one second material layer of the component can be formed by the extrusion head by forming one or more infill material strands building on the first material layer, in particular in at least one second two-dimensional plane parallel to the first two-dimensional plane; and in that the extrusion head forms the first and/or the second material layer exclusively by means of the one or more infill material strands.Type: ApplicationFiled: October 12, 2021Publication date: December 7, 2023Inventors: Stefan LEONHARDT, Sebastian PAMMER
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Patent number: 11628620Abstract: An additive manufacturing system, in particular a 3D printer, including a bottom element. The bottom element includes at least one funnel and/or air outlet, wherein at least one sieve and/or grid element is arranged in the area of the funnel and a plate element is arranged opposite the sieve.Type: GrantFiled: August 18, 2020Date of Patent: April 18, 2023Assignee: KUMOVIS GMBHInventors: Stefan Fischer, Miriam Haerst, Stefan Leonhardt, Sebastian Pammer
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Publication number: 20220387180Abstract: The present disclosure relates to an orthopedic implant, wherein the implant is a 3D printed part and comprises at least one first portion and at least one second portion, the first portion forming a support structure and the second portion being at least partially made of a biodegradable material. The present disclosure further relates to a method of manufacturing an orthopedic implant.Type: ApplicationFiled: November 16, 2020Publication date: December 8, 2022Inventors: Stefan LEONHARDT, Sebastian PAMMER
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Patent number: 11498271Abstract: The present invention relates to a fluid supply system for a 3D printer including a fluid pressure generating device for generating a pressurized fluid flow and with a fluid heating device for heating the fluid flow, wherein the 3D printer has at least one construction chamber which is delimited by a construction chamber with respect to the surroundings of the 3D printer and is sealed in a fluid-tight manner, wherein the fluid pressure generating device, the fluid heating device and the construction chamber housing are in fluid connect ion, whereby the fluid flow can flow through the construction chamber, and wherein the fluid pressure generating device, the fluid heating device and the construction chamber housing define a closed fluid circuit for the fluid flow which is heated by the fluid heating device before entry into the construction chamber.Type: GrantFiled: September 28, 2018Date of Patent: November 15, 2022Assignee: Kumovis GmbHInventors: Miriam Haerst, Stefan Leonhardt, Stefan Fischer, Sebastian Pammer
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Publication number: 20220281169Abstract: The present disclosure relates to a positioning system for an additive manufacturing system, in particular for a 3D printer, the positioning system being a positioning system for positioning a print head, wherein the positioning system allows movements in several degrees of freedom and the positioning system is of two-part design such that a part of the degrees of freedom is made possible by a first part of the positioning system and a further part is made possible by a second part of the positioning system. The present disclosure further relates to an additive manufacturing system, in particular a 3D printer, comprising at least one positioning system.Type: ApplicationFiled: July 27, 2020Publication date: September 8, 2022Inventors: Stefan FISCHER, Miriam HAERST, Stefan LEONHARDT, Sebastian PAMMER
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Publication number: 20220203613Abstract: The present disclosure relates to a print head for an additive manufacturing system, in particular for a 3D printer, comprising at least one temperature control element, in particular a cooling element, which is arranged adjacent to the print head. The present disclosure further relates to an additive manufacturing system, in particular a 3D printer, comprising at least one print head.Type: ApplicationFiled: July 28, 2020Publication date: June 30, 2022Inventors: Stefan FISCHER, Miriam HAERST, Stefan LEONHARDT, Sebastian PAMMER
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Publication number: 20210114304Abstract: A method for preparing an element for use in or as a medical device using an additive manufacturing process comprises applying on the element a treating agent in liquid or gaseous form.Type: ApplicationFiled: April 16, 2019Publication date: April 22, 2021Inventors: Tobias Abstreiter, Yannick Krieger, Stefan Leonhardt
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Publication number: 20210053289Abstract: The present invention relates to a bottom element for an additive manufacturing system, in particular for a 3D printer, the bottom element comprising at least one funnel and/or air outlet, wherein at least one sieve and/or grid element is arranged in the area of the funnel. The present invention further relates to an additive manufacturing system, in particular a 3D printer, comprising at least one bottom element.Type: ApplicationFiled: August 18, 2020Publication date: February 25, 2021Inventors: Stefan FISCHER, Miriam HAERST, Stefan LEONHARDT, Sebastian PAMMER
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Publication number: 20200298480Abstract: The present invention relates to a fluid supply system for a 3D printer including a fluid pressure generating device for generating a pressurized fluid flow and with a fluid heating device for heating the fluid flow, wherein the 3D printer has at least one construction chamber which is delimited by a construction chamber with respect to the surroundings of the 3D printer and is sealed in a fluid-tight manner, wherein the fluid pressure generating device, the fluid heating device and the construction chamber housing are in fluid connect ion, whereby the fluid flow can flow through the construction chamber, and wherein the fluid pressure generating device, the fluid heating device and the construction chamber housing define a closed fluid circuit for the fluid flow which is heated by the fluid heating device before entry into the construction chamber.Type: ApplicationFiled: September 28, 2018Publication date: September 24, 2020Inventors: Miriam HAERST, Stefan LEONHARDT, Stefan FISCHER, Sebastian PAMMER
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Publication number: 20190176401Abstract: A production device for layer-by-layer manufacture of a three-dimensional object, comprising a feeding device for feeding in of a starting material, and an application device for melting the starting material and for layer-by-layer shaping of the melted starting material into the object, wherein the feeding device comprises a drying device for drying of the starting material, or a drying device is connected upstream of the feeding device.Type: ApplicationFiled: August 8, 2017Publication date: June 13, 2019Applicant: Technische Universität MünchenInventors: Stefan FISCHER, Sebastian Tobias PAMMER, Stefan LEONHARDT, Miriam HAERST
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Publication number: 20110082799Abstract: A system and method for securely transferring sensitive payment data across a system landscape. The system and method may utilize machine-readable media including program code stored therein executable by one or more processors to perform the transferring of payment data. The transferring of data includes generating and encrypting a data container to combine all sensitive payment data.Type: ApplicationFiled: October 5, 2009Publication date: April 7, 2011Inventors: Hayo Parduhn, Mark Michaud, Markus Becker, Ingo Braeuninger, Stefan Leonhardt, Jean Berberian, Bernd Lehnert, Bernd Sieren