Patents by Inventor Severin Seifert
Severin Seifert 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: 12709576Abstract: The present invention relates to an autoclaved aerated concrete having a content of tobermorite of at least 12.5 wt % and a content of amorphous CSH phases of at least 30 wt %, based on the total weight amount of autoclaved aerated concrete, the process for producing said autoclaved aerated concrete using a silica source, which comprises a soluble silica species and a low curing temperature and the use of a silica source, which comprises a soluble silica species for the production of an autoclaved aerated concrete.Type: GrantFiled: April 19, 2021Date of Patent: August 18, 2026Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: Taban Shamshafshejani, Georg Schober, Severin Seifert
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Publication number: 20260049028Abstract: Granules are provided for building materials or as aggregates in building materials. Methods for producing the granules are also provided. The granules include a binder and a carbonized product, where the content of the carbonized product in each granule amounts to 30 wt.-% or more relative to the total weight of the binder and the carbonized product in the granule.Type: ApplicationFiled: October 27, 2025Publication date: February 19, 2026Applicant: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Christian KAISER, VOGEL Sebastian, Norbert LEISS, Severin SEIFERT
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Patent number: 12312476Abstract: The present invention relates to a process for the processing and/or purification of carbon black comprising the steps of: a) providing carbon black containing impurities b) providing an aqueous fluid comprising a nitrogen hydride c) providing an alkali metal hydroxide and/or an alkali metal d) contacting the mixture of step a), the fluid of step b) and the alkali metal hydroxide and/or alkali metal of step c) e) subjecting the composition obtained in step d) to an elevated temperature in the range of 80 to 240° C. and an elevated pressure in the range of 5 to 50 bar f) separating a carbonaceous solid from the composition obtained in step e). The present invention further relates to the use of a nitrogen hydride as a dispersing agent for producing and/or stabilizing an aqueous suspension.Type: GrantFiled: July 8, 2020Date of Patent: May 27, 2025Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.Inventors: Christian Kaiser, Volker Thome, Severin Seifert, Sebastian Dittrich
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Patent number: 11857978Abstract: A fragmentation system for electrodynamic fragmentation of material contains a feed and an outlet for transporting material along a transport path in a transport direction. At least one high-voltage pulse source is provided, each of the high-voltage pulse sources contains at least one first electrode and at least one second electrode for generating a high-voltage discharge in a discharge chamber. The transport path has a fractionation section, and the fractionation section extends through the discharge chamber. A selection device for selectively extracting the material on the transport path is provided in order to channel material and/or fragments of the material having a diameter smaller than a minimum diameter past at least one portion of one of the fractionation sections.Type: GrantFiled: October 28, 2020Date of Patent: January 2, 2024Assignees: Diehl Defence GmbH & Co. KG, Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e. V.Inventors: Robert Stark, Volker Thome, Severin Seifert, Sebastian Dittrich, Christian Bickes, Juergen Urban
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Publication number: 20230397639Abstract: The present invention relates to a method for forming fruit and vegetables by means of ultrasonic waves, to a convenience food item comprising fruit and vegetables formed in this way, and to the use of ultrasonic waves for forming fruit and vegetables.Type: ApplicationFiled: October 26, 2021Publication date: December 14, 2023Inventors: Christian Kaiser, Severin Seifert, Christine Kalina, Sebastian Dittrich
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Publication number: 20230219850Abstract: The present invention relates to calcium-containing, porous, mineral materials having a sulfate content of not more than 1.5% by weight and a biopolymer content in the range of 0.001 to 5.00% by weight, each relative to the total weight of the materials, a method for producing these materials with the aid of biopolymers as stabilizers and the use of biopolymers for producing sulfate-poor calcium-containing, porous, mineral materials.Type: ApplicationFiled: June 30, 2021Publication date: July 13, 2023Inventors: Christian Kaiser, Volker Thome, Severin Seifert, Sebastian Dittrich, Georg Schober
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Publication number: 20230146063Abstract: The present invention relates to an autoclaved aerated concrete having a content of tobermorite of at least 12.5 wt % and a content of amorphous CSH phases of at least 30 wt %, based on the total weight amount of autoclaved aerated concrete, the process for producing said autoclaved aerated concrete using a silica source, which comprises a soluble silica species and a low curing temperature and the use of a silica source, which comprises a soluble silica species for the production of an autoclaved aerated concrete.Type: ApplicationFiled: April 19, 2021Publication date: May 11, 2023Inventors: Taban Shamshafshejani, Georg Schober, Severin Seifert
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Publication number: 20220372301Abstract: The present invention relates to a process for the processing and/or purification of carbon black comprising the steps of: a) providing carbon black containing impurities b) providing an aqueous fluid comprising a nitrogen hydride c) providing an alkali metal hydroxide and/or an alkali metal d) contacting the mixture of step a), the fluid of step b) and the alkali metal hydroxide and/or alkali metal of step c) e) subjecting the composition obtained in step d) to an elevated temperature in the range of 80 to 240° C. and an elevated pressure in the range of 5 to 50 bar f) separating a carbonaceous solid from the composition obtained in step e). The present invention further relates to the use of a nitrogen hydride as a dispersing agent for producing and/or stabilizing an aqueous suspension.Type: ApplicationFiled: July 8, 2020Publication date: November 24, 2022Inventors: Christian Kaiser, Volker Thome, Severin Seifert, Sebastian Dittrich
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Publication number: 20210319377Abstract: The subject matter of the present application relates to a test method for determining the risk potential of an alkali-silica reaction in mineral construction materials such as concrete. The test method may be characterized by the steps of: a) examining (220) a sample (12) by means of Raman spectroscopy for providing a structural characterization (230) of the sample (12), b) comparing (240) the examination result to values (250) stored in a database, and c) using (260) the result of the comparison (240) for ascertaining (270) a risk potential for the concrete for an alkali-silica reaction.Type: ApplicationFiled: June 25, 2021Publication date: October 14, 2021Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.Inventors: SEBASTIAN DITTRICH, VOLKER THOME, SEVERIN SEIFERT, MIRIAM KRÜGER
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Publication number: 20210069724Abstract: A fragmentation system for electrodynamic fragmentation of material contains a feed and an outlet for transporting material along a transport path in a transport direction. At least one high-voltage pulse source is provided, each of the high-voltage pulse sources contains at least one first electrode and at least one second electrode for generating a high-voltage discharge in a discharge chamber. The transport path has a fractionation section, and the fractionation section extends through the discharge chamber. A selection device for selectively extracting the material on the transport path is provided in order to channel material and/or fragments of the material having a diameter smaller than a minimum diameter past at least one portion of one of the fractionation sections.Type: ApplicationFiled: October 28, 2020Publication date: March 11, 2021Inventors: Robert Stark, Volker Thome, Severin Seifert, Sebastian Dittrich, Christian Bickes, Juergen Urban
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Patent number: 9603683Abstract: A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of g) working the dental restoration (D), and h) veneering tType: GrantFiled: December 23, 2011Date of Patent: March 28, 2017Assignee: BEGO BREMER GOLDSCHLAGEREI WILH. HERBST GMBH & CO. KGInventors: Stephan Dierkes, Severin Seifert, Roland Strietzel
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Publication number: 20140008826Abstract: A method for producing a dental restoration (D) by CAD casting is described, said method comprising the steps of a) recording three-dimensional, digital data of the dentition or of a part of the dentition of a patient, b) creating a virtual dental restoration (VD) using the recorded three-dimensional, digital data, wherein the virtual dental restoration (VD) is expanded in relation to the dental restoration (D) to be produced, c) preparing a model (M) using the created virtual dental restoration, such that the model (M) is expanded in relation to the dental restoration (D) to be produced, d) embedding the model (M) in an embedding compound (EM), e) hardening the embedding compound (EM) and removing the model (M), such that a casting mold is obtained, f) filling the casting mold, preferably by pouring, with a casting material (GM) and cooling the casting material (GM), such that the dental restoration (D) is obtained, and optionally the further steps of c) working the dental restoration (D), and h) veneering tType: ApplicationFiled: December 23, 2011Publication date: January 9, 2014Applicant: BEGO BREMER GOLDSCHLAGEREI WILH. HERBST GMBH & CO. KGInventors: Stephan Dierkes, Severin Seifert, Roland Strietzel