Patents by Inventor Maria SCHWEINEFUß

Maria SCHWEINEFUß 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).

  • Publication number: 20230271245
    Abstract: What is described is a process for producing an article for use in the foundry industry, selected from the group consisting of molds, cores, feeder elements and molding material mixtures, comprising the following steps: (S1) producing or providing a binder system comprising the following components in three spatially separate vessels: a component (A) comprising particulate amorphous silicon dioxide, a first liquid component (B) comprising waterglass, and a second liquid component (C) comprising aluminate ions dissolved in an aqueous phase, (S2) contacting a mold base material (D) and constituents of all the said components (A), (B) and (C) of the binder system in predetermined ratios in one or more steps, so as to result in a molding material mixture in which the aluminate ions and the particulate amorphous silicon dioxide are mixed wholly or partly into the waterglass, wherein steps (S1) and (S2) are conducted in a facility for producing molding material mixtures.
    Type: Application
    Filed: July 12, 2021
    Publication date: August 31, 2023
    Applicant: HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung
    Inventors: Azghar Munshi, René Vergovic, Lukas Mirko Reinold, Maria Schweinefuss
  • Publication number: 20230001470
    Abstract: What are described are the use of a refractory coating composition for production of cores for diecasting, a kit for production of cores for use in diecasting, a method of producing cores for use in diecasting, cores for use in diecasting, and the use of such cores in diecasting, especially of lightweight metals
    Type: Application
    Filed: November 18, 2020
    Publication date: January 5, 2023
    Applicant: HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung
    Inventors: Sabrina Maria Sachau, Maria Schweinefuß, Christian Lustig, Klaus Seeger
  • Patent number: 11311931
    Abstract: Described is a method of preparing a particulate refractory composition for use in the manufacture of foundry moulds and cores from spent foundry moulds or cores formed of refractory material and a binder containing water glass, the method comprising the following steps: providing broken material from spent foundry moulds or cores or preparing broken material from spent foundry moulds or cores, wherein the broken material comprises particles and/or aggregates of particles of refractory material having hardened water glass binder on their surface, mixing the broken material with particulate amorphous oxide comprising silicon dioxide in an amount of 85% by weight or more, based on the total amount of the particulate amorphous oxide, to give a mixture and subjecting the mixture to a heat treatment at a temperature of 400° C. or higher. Also described are a corresponding use, a reclamation mixture, and a method of making a foundry mould or core.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: April 26, 2022
    Assignee: HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
    Inventors: Xin Li, Christian Lustig, Mirko Reinold, Maria Schweinefuß, Nicolas Egeler
  • Publication number: 20210339308
    Abstract: Described is a method of preparing a particulate refractory composition for use in the manufacture of foundry moulds and cores from spent foundry moulds or cores formed of refractory material and a binder containing water glass, the method comprising the following steps: providing broken material from spent foundry moulds or cores or preparing broken material from spent foundry moulds or cores, wherein the broken material comprises particles and/or aggregates of particles of refractory material having hardened water glass binder on their surface, mixing the broken material with particulate amorphous oxide comprising silicon dioxide in an amount of 85% by weight or more, based on the total amount of the particulate amorphous oxide, to give a mixture and subjecting the mixture to a heat treatment at a temperature of 400° C. or higher. Also described are a corresponding use, a reclamation mixture, and a method of making a foundry mould or core.
    Type: Application
    Filed: September 6, 2019
    Publication date: November 4, 2021
    Applicant: HÜTTENES-ALBERTUS Chemische Werke Gesellschaft mit beschränkter Haftung
    Inventors: Xin LI, Christian LUSTIG, Mirko REINOLD, Maria SCHWEINEFUß, Nicolas EGELER
  • Patent number: 11065676
    Abstract: What are described is a process for producing casting molds, cores and mold base materials regenerated therefrom, a mixture for combination with a solution or dispersion comprising waterglass for production of casting molds and/or cores, a molding material mixture, a mold base material mixture, and a casting mold or a core. What is also described is the corresponding use of an amount of particulate sheet silicates having a d90 of less than 45 ?m or a corresponding mixture as additive for production of a molding material mixture comprising waterglass and particulate amorphous silicon dioxide, which is cured by chemical reaction of constituents of the molding material mixture with one another, in the production of a casting mold or a core, to facilitate the breakdown and/or to increase the regeneratability of the casting mold or core.
    Type: Grant
    Filed: April 5, 2018
    Date of Patent: July 20, 2021
    Assignee: HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
    Inventors: Lukas Mirko Reinold, Maria Schweinefuss, Christian Lustig
  • Patent number: 10981215
    Abstract: A description is given of a method for producing a molding material mixture or for producing a molding material mixture and a molding therefrom, preferably casting molds or cores, for use in the foundry industry, where the molding material mixture comprises a mold base material and a solution or dispersion comprising lithium-containing waterglass, comprising the following steps: (1) producing or providing a kit at least comprising as separate components: (K1) an aqueous solution or dispersion comprising waterglass and (K2a) a first waterglass-free solution or dispersion comprising lithium ions in solution in water, and also preferably (K2b) a second waterglass-free solution or dispersion, preferably comprising lithium ions in solution in water with a lower concentration than in component (K2a), and thereafter (2) producing a mixture of the mold base material with a fraction of component (K1) and with a fraction of component (K2a), and also optionally with a fraction of component (K2b).
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: April 20, 2021
    Assignee: HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
    Inventors: Christian Lustig, Marcin Baldy, Edgar Müller, Lukas Mirko Reinold, Sabrina Maria Anderten, Maria Schweinefuß, René Vargovic
  • Publication number: 20210107055
    Abstract: What are described is a process for producing casting molds, cores and mold base materials regenerated therefrom, a mixture for combination with a solution or dispersion comprising waterglass for production of casting molds and/or cores, a molding material mixture, a mold base material mixture, and a casting mold or a core. What is also described is the corresponding use of an amount of particulate sheet silicates having a d90 of less than 45 ?m or a corresponding mixture as additive for production of a molding material mixture comprising waterglass and particulate amorphous silicon dioxide, which is cured by chemical reaction of constituents of the molding material mixture with one another, in the production of a casting mold or a core, to facilitate the breakdown and/or to increase the regeneratability of the casting mold or core.
    Type: Application
    Filed: April 5, 2018
    Publication date: April 15, 2021
    Applicant: HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
    Inventors: Lukas Mirko REINOLD, Maria SCHWEINEFUSS, Christian LUSTIG
  • Publication number: 20200130049
    Abstract: A description is given of a method for producing a molding material mixture or for producing a molding material mixture and a molding therefrom, preferably casting molds or cores, for use in the foundry industry, where the molding material mixture comprises a mold base material and a solution or dispersion comprising lithium-containing waterglass, comprising the following steps: (1) producing or providing a kit at least comprising as separate components: (K1) an aqueous solution or dispersion comprising waterglass and (K2a) a first waterglass-free solution or dispersion comprising lithium ions in solution in water, and also preferably (K2b) a second waterglass-free solution or dispersion, preferably o comprising lithium ions in solution in water with a lower concentration than in component (K2a), and thereafter (2) producing a mixture of the mold base material with a fraction of component (K1) and with a fraction of component (K2a), and also optionally with a fraction of component (K2b).
    Type: Application
    Filed: June 28, 2018
    Publication date: April 30, 2020
    Applicant: HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG
    Inventors: Christian LUSTIG, Marcin BALDY, Edgar MÜLLER, Lukas Mirko REINOLD, Sabrina Maria ANDERTEN, Maria SCHWEINEFUß, René VARGOVIC