Patents by Inventor Stefan Haufe
Stefan Haufe 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: 20250054605Abstract: Disclosed herein is a medical system (100, 300, 400) comprising: a memory (110) storing machine executable instructions (120) and a computational system (104). Execution of the machine executable instructions causes the computational system to: receive (200) modified three-dimensional tomographic medical image data (122) that has been facially erased within a facial zone (128); fit (202) a model-based segmentation (126) to the modified three-dimensional tomographic medical image data, wherein the model-based segmentation comprises multiple surface meshes (602, 604, 606, 608, 700) that define anatomical regions (800); label (204) each of the voxels of a reconstructed region (130) of the modified three-dimensional tomographic medical image data with an anatomical label according to anatomical regions defined by the multiple surface meshes; and assign (206) a contrast value to voxels in the reconstructed region using the anatomical label to provide repaired three-dimensional tomographic medical image data (132).Type: ApplicationFiled: December 15, 2022Publication date: February 13, 2025Inventors: ARNE EWALD, FABIAN WENZEL, NICK FLÄSCHNER, STEFAN HAUFE
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Publication number: 20250015259Abstract: A process for producing etched silicon-containing materials includes a first step and a second step. In the first step, silicon is deposited in the pores and on the surface of porous particles by way of thermal decomposition of silicon precursors on the porous particles, forming silicon-containing materials. In the second step, some of the deposited silicon of the silicon-containing materials is removed by etching-off.Type: ApplicationFiled: December 2, 2021Publication date: January 9, 2025Applicant: Wacker Chemie AGInventors: Christoph DRÄGER, Stefan HAUFE
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Publication number: 20230299271Abstract: Non-aggregated carbon-coated silicon particles are prepared, which have average particle diameters d50 of 1 to 15 ?m and contain ?10 wt. % carbon and ?90 wt. % silicon relative to the total weight of the carbon-coated silicon particles, by treating dry mixtures containing silicon particles and one or more polymeric carbon precursors, which contain one or more oxygen atoms and one or more heteroatoms selected from the group consisting of nitrogen, sulfur and phosphorus, in oxidative atmosphere at a temperature of 200 to 400° C. (thermal treatment) and subsequently performing carbonization in inert atmosphere.Type: ApplicationFiled: July 2, 2020Publication date: September 21, 2023Applicant: Wacker Chemie AGInventors: Stefan HAUFE, Christoph DRAEGER, Jennifer WEGENER
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Publication number: 20230299371Abstract: A lithium-ion battery and a method for pre-lithiating a silicon-containing anode for use therein. The method includes providing a lithium-ion battery including a cathode having a lithium transition metal oxide, an anode, a separator, and an organic electrolyte. Where the end voltage during a battery charging cycle procedure U1 is between 4.35 V and 4.80 V. During subsequent battery charging cycles, the end voltage during discharging of the battery U2 does not drop below 3.01 V and where during subsequent battery charging cycles, the end voltage during charging of the lithium-ion battery U3 is lower than the end voltage during charging of the lithium-ion battery U1. The lithium-ion battery is charged by the cc/cv method and the end voltage during subsequent discharging of the lithium-ion battery U4 is lower than the end voltage during discharging of the lithium-ion battery U2 and does not drop below 3.01 V.Type: ApplicationFiled: June 17, 2021Publication date: September 21, 2023Applicant: Wacker Chemie AGInventor: Stefan Haufe
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Publication number: 20220263145Abstract: A lithium-ion battery and method for cycling lithium-ion batteries. The method includes providing a lithium-ion battery comprising a cathode, an anode, a separator and an electrolyte. The anode contains pre-lithiated silicon having a degree of pre-lithiation ?1 of from 5 to 50% and the anode material is only partially lithiated during full charging of the lithium-ion battery by the lithiation capacity of silicon being utilized to a degree of lithiation ?2 of from 5 to 50% by the partial lithiation of the anode material during full charging of the lithium ion battery. The total degree of lithiation ? of the silicon is from 10 to 75%, the total degree of lithiation ? is the sum of the degree of pre-lithiation ?1 and the degree of lithiation ?2, where the figures in % are based on the maximum lithiation capacity of silicon.Type: ApplicationFiled: May 21, 2019Publication date: August 18, 2022Applicant: Wacker Chemie AGInventors: Rebecca Bernhard, Markus Ege, Stefan Haufe
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Publication number: 20220216519Abstract: A lithium ion battery and process for producing the same. The lithium ion batteries include a cathode, an anode, a separator, an electrolyte and a battery housing which receives these components. The cathode, the anode, the separator or any other reservoir located in the battery housing and differing from the electrolyte contains one or more organic or inorganic nitrates or one or more organic or inorganic nitrites and the anode contains silicon particles with a silicon content of ?90 wt. % in relation to the total weight of the silicon particles.Type: ApplicationFiled: April 17, 2019Publication date: July 7, 2022Applicant: Wacker Chemie AGInventors: Irmgard Buchberger, Stefan Haufe, Dominik Jantke
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Patent number: 11335904Abstract: The invention relates to composite core-shell particles wherein the core is a porous, carbon-based matrix which contains silicon particles enclosed in pores of the matrix; the pores containing the silicon particles have a diameter of ?60 nm as determined by scanning electron microscopy (SEM); the shell can be obtained by carbonizing one or more carbon precursors selected from among the group comprising tars, pitches, hard carbon, soft carbon and hydrocarbons having 1 to 20 carbon atoms, resulting in a non-porous shell.Type: GrantFiled: February 14, 2017Date of Patent: May 17, 2022Assignee: WACKER CHEMIE AGInventors: Dennis Troegel, Stefan Haufe
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Patent number: 11158855Abstract: The invention relates to polymer-grafted silicon particles, wherein the silicon particles have an average particle size (d50) of 700 nm to 10 ?m and the polymers of the polymer-grafted silicon particles are attached to the silicon particles in a wash-stable manner in an aqueous medium.Type: GrantFiled: February 9, 2017Date of Patent: October 26, 2021Assignee: Wacker Chemie AGInventors: Dominik Jantke, Stefan Haufe, Jürgen Stohrer
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Patent number: 11050055Abstract: The invention relates to lithium ion batteries comprising a cathode, an anode containing silicon particles, a separator and an electrolyte, characterized in that the electrolyte contains one or more inorganic salts selected from among the group comprising alkali salts and ammonium salts of nitrate, nitrite, azide, phosphate, carbonate, borates and fluoride, and in that the anode material is only partially lithiated in the fully charged lithium ion battery.Type: GrantFiled: October 5, 2016Date of Patent: June 29, 2021Assignee: WACKER CHEMIE AGInventors: Daniel Bräunling, Stefan Haufe
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Patent number: 10978733Abstract: The invention relates to non-aggregated carbon-coated silicon particles having average particle diameters d50 of 1 to 15 ?m, which particles contain ?10 wt % carbon and ?90 wt % silicon, each based on the total weight of the carbon-coated silicon particlesType: GrantFiled: October 11, 2017Date of Patent: April 13, 2021Assignee: WACKER CHEMIE AGInventors: Jennifer Wegener, Stefan Haufe, Jürgen Stohrer
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Patent number: 10777807Abstract: One aspect of the invention relates to an anode material or lithium ion batteries that is based on silicon particles, one or more binders, optionally graphite, optionally one or more additional electroconductive components, and optionally one or more additives, characterized in that the silicon particles are not aggregated and have a volume-weighted particle size distribution between the diameter percentiles d10?0.2 ?m and d90?20.0 ?mas well as a width d90?d10?15 ?m.Type: GrantFiled: July 28, 2016Date of Patent: September 15, 2020Assignee: Wacker Chemie AGInventor: Stefan Haufe
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Patent number: 10727529Abstract: Lithium ion batteries containing fine, non-aggregated silicon particles have high initial voltage and exhibit good charge retention over large numbers of charge/discharge cycles when used with an electrolyte containing one or more amines, under conditions that silicon contained in the anode is only partially lithiated such that the ratio of Li:Si is less than or equal to 2.2:1.Type: GrantFiled: August 2, 2016Date of Patent: July 28, 2020Assignee: WACKER CHEMIE AGInventors: Stefan Haufe, Daniel Braeunling
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Patent number: 10629895Abstract: The invention relates to silicon/graphite/carbon composites (Si/G/C-composites), containing graphite (G) and non-aggregated, nanoscale silicon particles (Si), wherein the silicon particles are embedded in a carbon matrix (C). The invention also relates to a method for producing said type of composite, electrode material for lithium ion batteries containing said type of composite and to a lithium ion battery.Type: GrantFiled: January 23, 2015Date of Patent: April 21, 2020Assignee: WACKER CHEMIE AGInventors: Dennis Troegel, Peter Gigler, Eckhard Hanelt, Stefan Haufe
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Publication number: 20200028173Abstract: The invention relates to polymer-grafted silicon particles, wherein the silicon particles have an average particle size (d50) of 700 nm to 10 ?m and the polymers of the polymer-grafted silicon particles are attached to the silicon particles in a wash-stable manner in an aqueous medium.Type: ApplicationFiled: February 9, 2017Publication date: January 23, 2020Inventors: Dominik Jantke, Stefan Haufe, Jürgen Stohrer
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Publication number: 20190305366Abstract: The invention relates to non-aggregated carbon-coated silicon particles having average particle diameters d50 of 1 to 15 ?m, which particles contain ?10 wt % carbon and ?90 wt % silicon, each based on the total weight of the carbon-coated silicon particlesType: ApplicationFiled: October 11, 2017Publication date: October 3, 2019Inventors: Jennifer Wegener, Stefan Haufe, Jürgen Stohrer
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Publication number: 20190237759Abstract: The invention relates to lithium ion batteries comprising a cathode, an anode containing silicon particles, a separator and an electrolyte, characterized in that the electrolyte contains one or more inorganic salts selected from among the group comprising alkali salts and ammonium salts of nitrate, nitrite, azide, phosphate, carbonate, borates and fluoride, and in that the anode material is only partially lithiated in the fully charged lithium ion battery.Type: ApplicationFiled: October 5, 2016Publication date: August 1, 2019Inventors: Daniel Bräunling, Stefan Haufe
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Publication number: 20180342732Abstract: The invention relates to composite core-shell particles wherein the core is a porous, carbon-based matrix which contains silicon particles enclosed in pores of the matrix; the pores containing the silicon particles have a diameter of ?60 nm as determined by scanning electron microscopy (SEM); the shell can be obtained by carbonizing one or more carbon precursors selected from among the group comprising tars, pitches, hard carbon, soft carbon and hydrocarbons having 1 to 20 carbon atoms, resulting in a non-porous shell.Type: ApplicationFiled: February 14, 2017Publication date: November 29, 2018Inventors: Dennis TROEGEL, Stefan HAUFE
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Publication number: 20180269524Abstract: Lithium ion batteries containing fine, non-aggregated silicon particles have high initial voltage and exhibit good charge retention over large numbers of charge/discharge cycles when used with an electrolyte containing one or more amines, under conditions that silicon contained in the anode is only partially lithiated such that the ratio of Li:Si is less than or equal to 2.2:1.Type: ApplicationFiled: August 2, 2016Publication date: September 20, 2018Applicant: Wacker Chemie AGInventors: Stefan HAUFE, Daniel BRAEUNLING
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Patent number: 10044032Abstract: The invention relates to an electrode coating for a lithium-ion battery, containing copolymer C or the salt thereof, copolymer C being synthesized by polymerizing a combined total of more than 70 wt % of vinyl-functional cyclic carbonate and one or more monomers from the group comprising acrylic acid and the derivatives thereof, the percentage by weight of vinyl-functional cyclic carbonate in relation to the weight of all monomers used being 5-90%.Type: GrantFiled: August 26, 2015Date of Patent: August 7, 2018Assignee: Wacker Chemie AGInventors: Christian Bruckmeier, Frank Deubel, Stefan Haufe
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Publication number: 20180212234Abstract: One aspect of the invention relates to an anode material or lithium ion batteries that is based on silicon particles, one or more binders, optionally gaphite, optionally one or more additional electroconductive components, and optionally one or more additives, characterized in that the silicon particles are not aggegated and have a volume-weighted particle size distribution between the diameter percentiles d10?0.2 ?m and d50?20.0 ?mas well as as width d90?15 ?m.Type: ApplicationFiled: July 28, 2016Publication date: July 26, 2018Inventor: Stefan HAUFE