Patents by Inventor David VAN ASTEN

David VAN ASTEN 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).

  • Packed-screen type magnetocaloric element
    Patent number: 11802720
    Abstract: A magnetocaloric lattice element formed by fibres of magnetocaloric material, wherein the fibres are arranged in respective parallel lattice planes, each fibre having a respective mass of magnetocaloric material, the fibres of given lattice plane do not contact each other but each fibre of a given lattice plane is attached to at least two fibres in a next neighbouring lattice place, and wherein the magnetocaloric lattice element exhibits exactly one predominant mass-weighted direction of longitudinal fibre extension.
    Type: Grant
    Filed: November 2, 2022
    Date of Patent: October 31, 2023
    Assignee: Magneto B.V.
    Inventors: Florian Scharf, Lian Zhang, Bernard Reesink, David Van Asten
  • Packed-Screen Type Magnetocaloric Element
    Publication number: 20230046873
    Abstract: The invention relates to a magnetocaloric lattice element formed by fibres of magnetocaloric material, wherein the fibres are arranged in respective parallel lattice planes, each fibre having a respective mass of magnetocaloric material, the fibres of a given lattice plane do not contact each other but each fibre of a given lattice plane is attached to at least two fibres in a next neighbouring lattice plane, and wherein the magnetocaloric lattice element exhibits exactly one predominant mass-weighted direction of longitudinal fibre extension. When arranged in alignment of its predominant mass-weighted direction of longitudinal fibre extension with an external magnetic field, the magnetocaloric lattice element achieves an advantageous, particularly high magnetization of the magnetocaloric material, and as a consequence improves the performance of the magnetocaloric cooling device.
    Type: Application
    Filed: November 2, 2022
    Publication date: February 16, 2023
    Applicant: Magneto B.V.
    Inventors: Florian SCHARF, Lian ZHANG, Bernard REESINK, David VAN ASTEN
  • CONTROLLED VARIATION OF PARAMETERS OF MAGNETOCALORIC MATERIALS
    Publication number: 20190198206
    Abstract: Described are a kit comprising at least two magnetocaloric materials having identical stoichiometry but different Curie temperature, a magnetocaloric regenerator comprising at least two magnetocaloric materials having identical stoichiometry but different Curie temperature and a process for producing at least two magnetocaloric materials having identical stoichiometry but different Curie temperature.
    Type: Application
    Filed: August 31, 2017
    Publication date: June 27, 2019
    Applicant: BASF SE
    Inventors: Johan TER MAAT, Sumohan MISRA, David VAN ASTEN, Bernard REESINK, Wilfried HERMES, Michael ZEILINGER, Fabian SEELER, Kerstin SCHIERLE-ARNDT, Ekkehard BRUECK, Van Thang NGUYEN
  • Magnetocaloric cascade and method for fabricating a magnetocaloric cascade
    Patent number: 10229775
    Abstract: A magnetocaloric cascade contains a sequence of magnetocaloric material layers having different Curie temperatures TC, wherein the magnetocaloric material layers include a cold-side outer layer, a hot-side outer layer and at least three inner layers between the cold-side outer layer and the hot-side outer layer, and each pair of next neighboring magnetocaloric layers of the magnetocaloric cascade has a respective Curie-temperature difference amount ?TC between their respective Curie temperatures, wherein the hot-side outer layer or the cold-side outer layer or both the hot-side and cold-side outer layer exhibits a larger ratio m?Smax/?TC in comparison with any of the inner layers, m denoting the mass of the respective magnetocaloric material layer and ?Smax denoting a maximum amount of isothermal magnetic entropy change achievable in a magnetic phase transition of the respective magnetocaloric material layer.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: March 12, 2019
    Assignee: BASF SE
    Inventors: Florian Scharf, Markus Schwind, David Van Asten, Steven Alan Jacobs
  • IMPROVED PACKED-SCREEN-TYPE MAGNETOCALORIC ELEMENT
    Publication number: 20180180330
    Abstract: The invention relates to a magnetocaloric lattice element formed by fibres of magnetocaloric material, wherein the fibres are arranged in respective parallel lattice planes, each fibre having a respective mass of magnetocaloric material, the fibres of a given lattice plane do not contact each other but each fibre of a given lattice plane is attached to at least two fibres in a next neighbouring lattice plane, and wherein the magnetocaloric lattice element exhibits exactly one predominant mass-weighted direction of longitudinal fibre extension. When arranged in alignment of its predominant mass-weighted direction of longitudinal fibre extension with an external magnetic field, the magnetocaloric lattice element achieves an advantageous, particularly high magnetization of the magnetocaloric material, and as a consequence improves the performance of the magnetocaloric cooling device.
    Type: Application
    Filed: June 8, 2016
    Publication date: June 28, 2018
    Applicant: BASF SE
    Inventors: Florian SCHARF, Lian ZHANG, Bernard Hendrik Reesink, David VAN ASTEN
  • MAGNETOCALORIC CASCADE AND METHOD FOR FABRICATING A MAGNETOCALORIC CASCADE
    Publication number: 20180005735
    Abstract: A magnetocaloric cascade contains a sequence of magnetocaloric material layers having different Curie temperatures TC, wherein the magnetocaloric material layers include a cold-side outer layer, a hot-side outer layer and at least three inner layers between the cold-side outer layer and the hot-side outer layer, and each pair of next neighboring magnetocaloric layers of the magnetocaloric cascade has a respective Curie-temperature difference amount ?TC between their respective Curie temperatures, wherein the hot-side outer layer or the cold-side outer layer or both the hot-side and cold-side outer layer exhibits a larger ratio m?Smax/?TC in comparison with any of the inner layers, m denoting the mass of the respective magnetocaloric material layer and ?Smax denoting a maximum amount of isothermal magnetic entropy change achievable in a magnetic phase transition of the respective magnetocaloric material layer.
    Type: Application
    Filed: December 7, 2015
    Publication date: January 4, 2018
    Applicant: BASF SE
    Inventors: Florian SCHARF, Markus SCHWIND, David VAN ASTEN, Steven Alan JACOBS
  • MAGNETOCALORIC CASCADE AND METHOD FOR FABRICATING A MAGNETOCALORIC CASCADE
    Publication number: 20170372821
    Abstract: A magnetocaloric cascade contains a sequence of magnetocaloric material layers having different Curie temperatures TC, wherein the magnetocaloric material layers include a cold-side outer layer, a hot-side outer layer and at least three inner layers between the cold-side outer layer and the hot-side outer layer.
    Type: Application
    Filed: December 7, 2015
    Publication date: December 28, 2017
    Applicant: BASF SE
    Inventors: Florian SCHARF, Markus SCHWIND, David VAN ASTEN, Steven Alan JACOBS