Patents by Inventor Dominique Spehner

Dominique Spehner 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: 20240309484
    Abstract: A hot stamped coated steel product, the hot stamped coated steel product comprising: a base steel; and a coating having a thickness of including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer, the base steel having a composition comprising: 0.15%<carbon<0.5%; 0.5%<manganese<3%; 0.1%<silicon<0.5%; 0.01%<chromium<1%; titanium<0.2%; aluminum<0.1%; phosphorus<0.1%; sulfur<0.05%; 0.0005%<boron<0.08%; a weight ratio of titanium content with respect to the nitrogen content being in excess of 3.42; a remainder being iron and impurities inherent in processing.
    Type: Application
    Filed: May 22, 2024
    Publication date: September 19, 2024
    Inventors: Pascal DRILLET, Dominique SPEHNER, Ronald KEFFERSTEIN
  • Patent number: 12012640
    Abstract: A method of forming a hot stamped coated steel product includes providing a precoated steel strip, the precoated steel strip including a base steel having a first side and a second side, and a precoating on at least one of the first side and the second side, the precoating being made of aluminum or an aluminum alloy; heating the precoated steel strip in a furnace, wherein the precoated strip experiences a temperature rise at a heating rate (Vc) between 4° and 12° C./s, wherein Vc is a mean heating rate between 20 and 700 C; removing the heated precoated steel strip from the furnace; and then hot stamping the precoated strip to deform the precoated steel strip into a hot stamped coated steel product, the hot stamped coated steel product having a coating including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer.
    Type: Grant
    Filed: December 12, 2023
    Date of Patent: June 18, 2024
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20240110256
    Abstract: A method of forming a hot stamped coated steel product includes providing a precoated steel strip, the precoated steel strip including a base steel having a first side and a second side, and a precoating on at least one of the first side and the second side, the precoating being made of aluminum or an aluminum alloy; heating the precoated steel strip in a furnace, wherein the precoated strip experiences a temperature rise at a heating rate (Vc) between 4° and 12° C./s, wherein Vc is a mean heating rate between 20 and 700 C; removing the heated precoated steel strip from the furnace; and then hot stamping the precoated strip to deform the precoated steel strip into a hot stamped coated steel product, the hot stamped coated steel product having a coating including, proceeding from the base steel outwards: (a) an interdiffusion layer, (b) an intermediate layer, (c) an intermetallic layer, and (d) a superficial layer.
    Type: Application
    Filed: December 12, 2023
    Publication date: April 4, 2024
    Inventors: Pascal DRILLET, Dominique SPEHNER, Ronald KEFFERSTEIN
  • Patent number: 11939643
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: March 26, 2024
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Patent number: 11326227
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: May 10, 2022
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20220002834
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Application
    Filed: September 20, 2021
    Publication date: January 6, 2022
    Inventors: Pascal DRILLET, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20210262055
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Application
    Filed: May 13, 2021
    Publication date: August 26, 2021
    Inventors: Pascal DRILLET, Dominique Spehner, Ronald Kefferstein
  • Patent number: 11041226
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: June 22, 2021
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Patent number: 10961602
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 30, 2021
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Patent number: 10597747
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 24, 2020
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Patent number: 10590507
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 17, 2020
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Patent number: 10577674
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Grant
    Filed: May 16, 2019
    Date of Patent: March 3, 2020
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Patent number: 10550447
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: February 4, 2020
    Assignee: ArcelorMittal
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20190276912
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 12, 2019
    Inventors: Pascal DRILLET, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20190271057
    Abstract: A pre-coated steel strip is provided. The steel strip includesa strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 5, 2019
    Inventors: Pascal DRILLET, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20190271056
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 5, 2019
    Inventors: Pascal DRILLET, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20190271058
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 5, 2019
    Inventors: Pascal DRILLET, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20190271055
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Application
    Filed: May 16, 2019
    Publication date: September 5, 2019
    Inventors: Pascal DRILLET, Dominique Spehner, Ronald Kefferstein
  • Publication number: 20170260603
    Abstract: A pre-coated steel strip is provided. The steel strip includes a strip of base steel having a length, a width, a first side, and a second side. The length of the strip is at least 100 m and the width is at least 600 mm. An aluminum or an aluminum alloy pre-coating is on at least part of at least one of the first or second sides of the strip of base steel. A thickness tp of the pre-coating is from 20 to 33 micrometers at every location on at least one of the first or second sides. Processes, coated stamped products and land motor vehicles are also provided.
    Type: Application
    Filed: May 26, 2017
    Publication date: September 14, 2017
    Inventors: Pascal DRILLET, Dominique Spehner, Ronald Kefferstein
  • Patent number: 9708683
    Abstract: Coated steel having a well defined and uniform thickness is useful and advantageous for preparing products by hot stamping. Products prepared by hot stamping such a steel are particularly advantageous when subjected to a subsequent spot welding step.
    Type: Grant
    Filed: September 15, 2012
    Date of Patent: July 18, 2017
    Assignee: ArcelorMittal France
    Inventors: Pascal Drillet, Dominique Spehner, Ronald Kefferstein