Patents by Inventor Sigrid Jacobs

Sigrid Jacobs 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: 20260159913
    Abstract: A double cold rolled non-oriented electrical steel sheet having a composition including, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.2%?Manganese?0.24%, 3.1%?Silicon?3.5%, 0.8%?Aluminum?1.1%, Phosphorus ?0.15%, Sulfur ?0.006%, Nitrogen ?0.09%, and various optional elements. The remainder composition being iron and unavoidable impurities caused by processing. The microstructure is made of ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less from 30% to 35% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.645 T to 1.660 T.
    Type: Application
    Filed: August 1, 2025
    Publication date: June 11, 2026
    Inventors: Elke LEUNIS, Sigrid JACOBS, Xavier CHASSANG
  • Publication number: 20260103783
    Abstract: A non-oriented electrical steel sheet having a composition comprising of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.15%?Manganese?0.25%, 2.9%?Silicon?3.4%, 0.7%?Aluminum?1.3%, 0.05%?Nickel?1%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5%, and can contain various optional elements. The remainder composition being iron and unavoidable impurities caused by processing, the microstructure made of ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 35% when calculated in accordance of Bertotti method.
    Type: Application
    Filed: September 25, 2025
    Publication date: April 16, 2026
    Inventors: Sigrid JACOBS, Xavier CHASSANG, Elke LEUNIS
  • Patent number: 12571066
    Abstract: A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.17%?Manganese?0.4%, 3%?Silicon?3.6%, 0.7%?Aluminum?1.3%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5% and can contain various optional elements the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 25% when calculated in accordance of Bertotti method.
    Type: Grant
    Filed: July 10, 2025
    Date of Patent: March 10, 2026
    Assignee: ArcelorMittal
    Inventors: Sigrid Jacobs, Xavier Chassang, Elke Leunis
  • Publication number: 20260009099
    Abstract: A non-oriented electrical steel sheet having a composition including, expressed in percentage by weight: 0.0001%?Carbon?0.005%, 0.2%?Manganese?0.3%, 3.1%?Silicon?3.6%, 0.6%?Aluminum?1%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, and can contain various optional elements. The remainder composition being iron and unavoidable impurities caused by processing, the microstructure is made of ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 30% to 35% when calculated in accordance of Bertotti method.
    Type: Application
    Filed: September 9, 2025
    Publication date: January 8, 2026
    Inventors: Elke LEUNIS, Sigrid JACOBS, Xavier CHASSANG
  • Patent number: 12516396
    Abstract: A non-oriented electrical steel sheet having a composition of the following elements, expressed in percentage by weight 0.0001%?Carbon?0.007%, 0.15%?Manganese?0.25%, 2.9%?Silicon?3.4%, 0.8%?Aluminum?1.1%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5%, and the following optional elements 0%?Niobium?0.1%, 0%?Titanium?0.1%, 0%?Vanadium?0.1%, 0%?Chromium?1%, 0%?Molybdenum?0.5%, 0%?Tungsten?0.1%, 0%?Cobalt?1%, 0%?Arsenic?0.05%, 0.001%?Calcium?0.01%, 0%?Copper?1%, 0%?Nickel?1%, 0%?Boron?0.05%, 0%?Lead?0.2%, 0%?Tin?0.2%, 0%?Antimony?0.2%, the remainder composition being composed of iron and unavoidable impurities caused by processing.
    Type: Grant
    Filed: June 23, 2025
    Date of Patent: January 6, 2026
    Assignee: ArcelorMittal
    Inventors: Sigrid Jacobs, Xavier Chassang, Elke Leunis
  • Publication number: 20250389002
    Abstract: A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.15%?Manganese?0.2%, 3%?Silicon?3.6%, 0.7%?Aluminum?1.3%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5%, various optional elements. The remainder composition is iron and unavoidable impurities caused by processing. The microstructure is made of ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, of 35 to 55% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000A/m (J50) from 1.635T to 1.670T.
    Type: Application
    Filed: August 27, 2025
    Publication date: December 25, 2025
    Inventors: Elke LEUNIS, Sigrid JACOBS, Xavier CHASSANG
  • Publication number: 20250361576
    Abstract: A double cold rolled non-oriented electrical steel sheet having a composition including, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.15%?Manganese?0.3%, 3.2%?Silicon?3.8%, 0.8%?Aluminum?1.1%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, and can contain various optional elements. The remainder composition being iron and unavoidable impurities caused by processing, the microstructure is made of ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 30% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.66 T to 1.69 T.
    Type: Application
    Filed: August 4, 2025
    Publication date: November 27, 2025
    Inventors: Elke LEUNIS, Sigrid JACOBS, Xavier CHASSANG
  • Publication number: 20250354233
    Abstract: A double cold rolled non-oriented electrical steel sheet having a composition including: 0.0001%?Carbon?0.007%, 0.1%?Manganese?0.2%, 3.1%?Silicon?3.6%, 0.8%?Aluminum?1.1%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, and can contain various optional elements. The remainder composition being iron and unavoidable impurities caused by processing, the microstructure is made of ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, is from 35% to 45% when calculated in accordance of Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.64 T to 1.66 T.
    Type: Application
    Filed: August 4, 2025
    Publication date: November 20, 2025
    Inventors: Elke LEUNIS, Sigrid JACOBS, Xavier CHASSANG
  • Publication number: 20250354230
    Abstract: The invention deals with a non-oriented electrical steel sheet having a composition of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.05%?Manganese?0.15%, 2.5%?Silicon?3.1%, 0.26%? Aluminum?0.7%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, and can contain various optional elements. The remainder composition is composed of iron and unavoidable impurities caused by processing. The microstructure of the steel sheet is made of ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 35% to 45% when calculated in accordance of Bertotti method.
    Type: Application
    Filed: July 29, 2025
    Publication date: November 20, 2025
    Inventors: Sigrid JACOBS, Xavier CHASSANG, Elke LEUNIS
  • Publication number: 20250354231
    Abstract: A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.21%?Manganese?0.7%, 3%?Silicon?3.6%, 0.7%?Aluminum?1.3%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5%, and can contain various optional elements. The remainder composition being composed of iron and unavoidable impurities. The microstructure is ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 35% to 45% and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.63T to 1.66T.
    Type: Application
    Filed: July 30, 2025
    Publication date: November 20, 2025
    Inventors: Elke LEUNIS, Sigrid JACOBS, Xavier CHASSANG
  • Publication number: 20250354243
    Abstract: A double cold rolled non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.1%?Manganese?0.3%, 3.1%?Silicon?3.8%, 0.6%?Aluminum?0.8%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, and can contain various optional elements. The remainder composition is iron and unavoidable impurities caused by processing. The microstructure ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, of 40 to 50% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.66T to 1.7T.
    Type: Application
    Filed: August 4, 2025
    Publication date: November 20, 2025
    Inventors: Elke LEUNIS, Sigrid JACOBS, Xavier CHASSANG
  • Publication number: 20250354242
    Abstract: A non-oriented electrical steel sheet having a composition of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.09%?Manganese?0.15%, 2.5%?Silicon?3%, 0.1% ? Aluminum?0.5%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, and can contain various optional elements, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 35% to 45% when calculated in accordance of Bertotti method.
    Type: Application
    Filed: July 29, 2025
    Publication date: November 20, 2025
    Inventors: Sigrid JACOBS, Xavier CHASSANG, Elke LEUNIS
  • Publication number: 20250354238
    Abstract: A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.15%?Manganese?0.25%, 3.2%?Silicon?3.8%, 0.7%?Aluminum?1.3%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, and various optional elements. The remainder composition is iron and unavoidable impurities caused by processing. The microstructure is ferrite and has in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 33% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.630T to 1.65T.
    Type: Application
    Filed: August 1, 2025
    Publication date: November 20, 2025
    Inventors: Sigrid JACOBS, Xavier CHASSANG, Elke LEUNIS
  • Publication number: 20250346977
    Abstract: A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%,, 0.15% ?Manganese?0.2%, 3%?Silicon?3.6%, 0.7%?Aluminum?1.3%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn ?5.5%, and can contain various optional elements, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, of 35 to 55% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.635T to 1.670T.
    Type: Application
    Filed: July 18, 2025
    Publication date: November 13, 2025
    Inventors: Elke LEUNIS, Sigrid JACOBS, Xavier CHASSANG
  • Publication number: 20250340963
    Abstract: A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.18%?Manganese?0.5%, 3.1%?Silicon?3.8%, 0.7%?Aluminum?1.3%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5%, and can contain various optional elements the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 34% when calculated in accordance with Bertotti method and simultaneously having a magnetic polarization at 5000 A/m (J50) from 1.60 T to 1.65 T.
    Type: Application
    Filed: July 11, 2025
    Publication date: November 6, 2025
    Inventors: Sigrid JACOBS, Xavier CHASSANG, Elke LEUNIS
  • Publication number: 20250340962
    Abstract: A non-oriented electrical steel sheet having a composition including the following elements, expressed in percentage by weight: 0.0001%?Carbon?0.007%, 0.15%?Manganese?0.7%, 3%?Silicon?3.6%, 0.7%?Aluminum?1.3%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5%, and can contain various optional elements, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110 microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, from 30 to 40% when calculated in accordance with Bertotti method.
    Type: Application
    Filed: July 11, 2025
    Publication date: November 6, 2025
    Inventors: Sigrid JACOBS, Xavier CHASSANG, Elke LEUNIS
  • Publication number: 20250333813
    Abstract: A non-oriented electrical steel sheet having a composition including of the following elements, expressed in percentage by weight: 0.0001% ? Carbon?0.007%, 0.17%?Manganese?0.4%, 3%?Silicon?3.6%, 0.7%?Aluminum?1.3%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5% and can contain various optional elements the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet being made of ferrite and including in area fraction, 80% to 100% recrystallized microstructure, 0% to 20% non-recrystallized microstructure wherein the average grain size of recrystallized microstructure is from 20 microns to 110microns and having a percentage of eddy current losses in total iron losses, measured at 1 T and 400 Hz according to IEC 60404-2 standards, less than 25% when calculated in accordance of Bertotti method.
    Type: Application
    Filed: July 10, 2025
    Publication date: October 30, 2025
    Inventors: Sigrid JACOBS, Xavier CHASSANG, Elke LEUNIS
  • Publication number: 20250320575
    Abstract: A non-oriented electrical steel sheet having a composition of the following elements, expressed in percentage by weight 0.0001%?Carbon?0.007%, 0.15%?Manganese?0.25%, 2.9%?Silicon?3.4%, 0.8%?Aluminum?1.1%, Phosphorus?0.15%, Sulfur?0.006%, Nitrogen?0.09%, with 3.85%?Si+Al+Mn?5.5%, and the following optional elements 0%?Niobium?0.1%, 0%?Titanium?0.1%, 0%?Vanadium?0.1%, 0%?Chromium?1%, 0%?Molybdenum?0.5%, 0%?Tungsten?0.1%, 0%?Cobalt?1%, 0%?Arsenic?0.05%, 0.001%?Calcium?0.01%, 0%?Copper?1%, 0%?Nickel?1%, 0%?Boron?0.05%, 0%?Lead?0.2%, 0%?Tin?0.2%, 0%?Antimony?0.2%, the remainder composition being composed of iron and unavoidable impurities caused by processing.
    Type: Application
    Filed: June 23, 2025
    Publication date: October 16, 2025
    Inventors: Sigrid JACOBS, Xavier CHASSANG, Elke LEUNIS
  • Patent number: 11566296
    Abstract: A method of production non grain-oriented Fe—Si steel sheet is provided. The method includes the steps of melting a steel composition that contains in weight percentage: C?0.006, 2.0?Si?5.0, 0.1?Al?3.0, 0.1?Mn?3.0, N?0.006, 0.04?Sn?0.2, S?0.005, P?0.2, Ti?0.01, the balance being Fe and other inevitable impurities, casting said melt into a slab, reheating said slab, hot rolling said slab, coiling said hot rolled steel, optionally annealing the hot rolled steel, cold rolling, annealing and cooling the cold rolled steel down to room temperature.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: January 31, 2023
    Assignee: ARCELORMITTAL
    Inventors: Elke Leunis, Tom Van De Putte, Sigrid Jacobs, Wahib Saikaly
  • Publication number: 20170314087
    Abstract: A method of production non grain-oriented Fe—Si steel sheet is provided. The method includes the steps of melting a steel composition that contains in weight percentage: C?0.006, 2.0?Si?5.0, 0.1?Al?3.0, 0.1?Mn?3.0, N?0.006, 0.04?Sn?0.2, S?0.005, P?0.2, Ti?0.01, the balance being Fe and other inevitable impurities, casting said melt into a slab, reheating said slab, hot rolling said slab, coiling said hot rolled steel, optionally annealing the hot rolled steel, cold rolling, annealing and cooling the cold rolled steel down to room temperature.
    Type: Application
    Filed: October 20, 2015
    Publication date: November 2, 2017
    Inventors: Elke LEUNIS, Tom VAN DE PUTTE, Sigrid JACOBS, Wahib SAIKALY