Patents by Inventor David Leyvraz

David Leyvraz 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).

  • Patent number: 11932928
    Abstract: Provided are new high strength 6xxx and 7xxx series aluminum alloys and methods of making aluminum products thereof. These aluminum products may be used to fabricate components which may replace steel in a variety of applications including the automotive industry. In some examples, the disclosed high strength 6xxx and 7xxx series aluminum alloys can replace high strength steels with aluminum. In one example, steels having a yield strength below 450 MPa may be replaced with the disclosed 6xxx or 7xxx series aluminum alloys without the need for major design modifications.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: March 19, 2024
    Assignee: NOVELIS INC.
    Inventors: Aude Despois, Guillaume Florey, Rajeev G. Kamat, Cyrille Bezencon, David Leyvraz, Samuel R. Wagstaff
  • Patent number: 11814713
    Abstract: Described herein are methods of processing heat treatable aluminum alloys using an accelerated aging step, along with aluminum alloy products prepared according to the methods. The methods of processing the heat treatable alloys described herein provide a more efficient method for producing aluminum alloy products having the desired strength and formability properties. For example, conventional methods of processing alloys can require 24 hours of aging. The methods described herein, however, substantially reduce the aging time, often requiring eight hours or less of aging time.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: November 14, 2023
    Assignee: Novelis Inc.
    Inventors: Cedric Wu, Rajeev G. Kamat, Yudie Yuan, David Leyvraz, Julie Richard, Rahul Vilas Kulkarni, Peter Lloyd Redmond, Yi Wang, Rajasekhar Talla, Rashmi Ranjan Mohanty, Tudor Piroteala
  • Publication number: 20230313353
    Abstract: Described are methods of making an aluminum alloy product. The method includes heating a rolled aluminum alloy product to a first temperature of from 400° C. to 525° C. The rolled aluminum alloy product may include a 7xxx series aluminum alloy. The method also includes maintaining the rolled aluminum alloy product at the first temperature or within 10° C. of the first temperature for a time duration of from 15 seconds to 30 minutes. The method also includes quenching the rolled aluminum alloy product at a quench rate from 0.5° C./s to 125° C./s thereby generating a heat-treated aluminum alloy product. The heat-treated aluminum alloy product exhibits a strain ratio of from 0.3 to 0.8. The strain ratio is determined according to an ASTM G129 and/or ASTM G139 standard test method.
    Type: Application
    Filed: September 16, 2021
    Publication date: October 5, 2023
    Applicant: Novelis Inc.
    Inventors: Yudie Yuan, Ganesh Bhaskaran, Anna E. Janoff, Cedric Wu, Rajeev G. Kamat, David Leyvraz
  • Patent number: 11766846
    Abstract: Provided herein are new clad aluminum alloy products and methods of making these alloys. These alloy products possess a combination of strength and other key attributes, such as corrosion resistance, formability, and joining capabilities. The alloy products can be used in a variety of applications, including automotive, transportation, and electronics applications.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: September 26, 2023
    Assignee: Novelis Inc.
    Inventors: Rajeev G. Kamat, Hashem Mousavi-Anijdan, Rahul Vilas Kulkarni, Juergen Timm, Corrado Bassi, Robert Bruce Wagstaff, Guillaume Florey, Cyrille Bezencon, Samuel R. Wagstaff, David Leyvraz
  • Publication number: 20230211401
    Abstract: Systems and methods are described for roll-forming metal substrates. The metal substrates are subjected to induction heating during the roll-forming process by exposure to time-varying magnetic fields, such as by exposure to a rotating permanent magnet, or exposure to laser radiation from a laser source. Heating of the metal substrates allows improved formability or plasticity of the substrate in order to reduce or eliminate damage to the substrate during roll-forming to low bending radius to thickness ratios. Heating of the high-strength metal substrates can also function to temper the substrates and/or improve surface corrosion resistance and form high-strength end products with desirable properties.
    Type: Application
    Filed: July 21, 2021
    Publication date: July 6, 2023
    Applicant: Novelis Inc.
    Inventors: Julio Malpica, Rajeev G. Kamat, Anna E. Janoff, Rajasekhar Talla, Brian Matthew Walczak, Debdutta Roy, David Anthony Gaensbauer, John Min Ho, Cullen Pearson, Adolfo Rais, Carolyn Grace Kidwell, Natasha Iyer, Julie Richard, David Leyvraz, Aude Celine Despois, Stefan Felix Kempa
  • Patent number: 11530473
    Abstract: Disclosed are high-strength, highly deformable aluminum alloys and methods of making and processing such alloys. More particularly, disclosed is a heat treatable aluminum alloy exhibiting improved mechanical strength and formability. The processing method includes casting, homogenizing, hot rolling, solutionizing, pre-aging and in some cases pre-straining. In some cases, the processing steps can further include cold rolling and/or heat treating.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: December 20, 2022
    Assignee: Novelis Inc.
    Inventors: Guillaume Florey, Corrado Bassi, Aude Despois, David Leyvraz
  • Patent number: 11466351
    Abstract: Disclosed herein are aluminum alloy products and methods of making the aluminum alloy products. Specifically, disclosed herein is an aluminum alloy provided in a temper achieved by rapidly quenching the aluminum alloy product after hot rolling. The aluminum alloys provided in the tempers described herein allow an end user to further process the aluminum alloys using less time and requiring less energy.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: October 11, 2022
    Assignee: Novells Inc.
    Inventors: Cyrille Bezencon, David Leyvraz, Aude Celine Despois, Samuel R. Wagstaff
  • Patent number: 10995397
    Abstract: Disclosed are high-strength aluminum alloys and methods of making and processing such alloys. More particularly, disclosed are aluminum alloys exhibiting improved mechanical strength. The processing method includes homogenizing, hot rolling, solutionizing, and multiple-step quenching. In some cases, the processing steps can further include annealing and/or cold rolling.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: May 4, 2021
    Assignee: NOVELIS INC.
    Inventors: David Leyvraz, Jonathan Friedli, Aude Despois, Guillaume Florey
  • Publication number: 20200307160
    Abstract: Provided herein are new clad aluminum alloy products and methods of making these alloys. These alloy products possess a combination of strength and other key attributes, such as corrosion resistance, formability, and joining capabilities. The alloy products can be used in a variety of applications, including automotive, transportation, and electronics applications.
    Type: Application
    Filed: June 15, 2020
    Publication date: October 1, 2020
    Applicant: Novelis Inc.
    Inventors: Rajeev G. Kamat, Hashem Mousavi-Anijdan, Rahul Vilas Kulkarni, Juergen Timm, Corrado Bassi, Robert Bruce Wagstaff, Guillaume Florey, Cyrille Bezencon, Samuel R. Wagstaff, David Leyvraz
  • Patent number: 10730266
    Abstract: Provided herein are new clad aluminum alloy products and methods of making these alloys. These alloy products possess a combination of strength and other key attributes, such as corrosion resistance, formability, and joining capabilities. The alloy products can be used in a variety of applications, including automotive, transportation, and electronics applications.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: August 4, 2020
    Assignee: NOVELIS INC.
    Inventors: Rajeev G. Kamat, Hashem Mousavi-Anijdan, Rahul Vilas Kulkarni, Juergen Timm, Corrado Bassi, Robert Bruce Wagstaff, Guillaume Florey, Cyrille Bezencon, Samuel R. Wagstaff, David Leyvraz
  • Publication number: 20200149141
    Abstract: Described herein are methods of processing heat treatable aluminum alloys using an accelerated aging step, along with aluminum alloy products prepared according to the methods. The methods of processing the heat treatable alloys described herein provide a more efficient method for producing aluminum alloy products having the desired strength and formability properties. For example, conventional methods of processing alloys can require 24 hours of aging. The methods described herein, however, substantially reduce the aging time, often requiring eight hours or less of aging time.
    Type: Application
    Filed: November 11, 2019
    Publication date: May 14, 2020
    Applicant: Novelis Inc.
    Inventors: Cedric Wu, Rajeev G. Kamat, Yudie Yuan, David Leyvraz, Julie Richard, Rahul Vilas Kulkarni, Peter Lloyd Redmond, Yi Wang, Rajasekhar Talla, Rashmi Ranjan Mohanty, Tudor Piroteala
  • Publication number: 20200095664
    Abstract: Disclosed are high-strength aluminum alloys and methods of making and processing such alloys. More particularly, disclosed is a 6XXX series aluminum alloy exhibiting improved mechanical strength, formability, corrosion resistance, and anodized qualities. An exemplary method includes homogenizing, hot rolling, solutionizing, and quenching. In some cases, the processing steps can further include annealing and/or cold rolling.
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Applicant: Novelis Inc.
    Inventors: Wei Wen, Hany Ahmed, Rajeev G. Kamat, Corrado Bassi, Guillaume Florey, Cyrille Bezencon, Juergen Timm, David Leyvraz, Aude Despois, Sazol Kumar Das
  • Publication number: 20200082973
    Abstract: Described herein are anodized continuous coils containing a thin anodized film layer and methods for making and using the same. The anodized continuous coils include an aluminum alloy continuous coil, wherein a surface of the aluminum alloy continuous coil comprises a thin anodized film layer. The anodized continuous coils maintain the anodized film layer during deforming processes.
    Type: Application
    Filed: September 10, 2019
    Publication date: March 12, 2020
    Applicant: NOVELIS INC.
    Inventors: RAHUL VILAS KULKARNI, CEDRIC WU, TODD SUMME, EMANUEL BECK, MICHELE EDITH BERNER, KURT SEKINGER, DAVID LEYVRAZ, THERESA ELIZABETH MACFARLANE
  • Patent number: 10538834
    Abstract: Disclosed are high-strength aluminum alloys and methods of making and processing such alloys. More particularly, disclosed is a 6XXX series aluminum alloy exhibiting improved mechanical strength, formability, corrosion resistance, and anodized qualities. An exemplary method includes homogenizing, hot rolling, solutionizing, and quenching. In some cases, the processing steps can further include annealing and/or cold rolling.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: January 21, 2020
    Assignee: NOVELIS INC.
    Inventors: Wei Wen, Hany Ahmed, Rajeev Kamat, Corrado Bassi, Guillaume Florey, Cyrille Bezencon, Juergen Timm, David Leyvraz, Aude Despois, Sazol Kumar Das
  • Publication number: 20190352759
    Abstract: Provided are new high strength 6xxx and 7xxx series aluminum alloys and methods of making aluminum products thereof. These aluminum products may be used to fabricate components which may replace steel in a variety of applications including the automotive industry. In some examples, the disclosed high strength 6xxx and 7xxx series aluminum alloys can replace high strength steels with aluminum. In one example, steels having a yield strength below 450 MPa may be replaced with the disclosed 6xxx or 7xxx series aluminum alloys without the need for major design modifications.
    Type: Application
    Filed: May 14, 2019
    Publication date: November 21, 2019
    Applicant: Novelis Inc.
    Inventors: Aude Despois, Guillaume Florey, Rajeev G. Kamat, Cyrille Bezencon, David Leyvraz, Samuel R. Wagstaff
  • Publication number: 20190352758
    Abstract: Disclosed herein are aluminum alloy products and methods of making the aluminum alloy products. Specifically, disclosed herein is an aluminum alloy provided in a temper achieved by rapidly quenching the aluminum alloy product after hot rolling. The aluminum alloys provided in the tempers described herein allow an end user to further process the aluminum alloys using less time and requiring less energy.
    Type: Application
    Filed: May 14, 2019
    Publication date: November 21, 2019
    Applicant: Novelis Inc.
    Inventors: Cyrille Bezencon, David Leyvraz, Aude Celine Despois, Samuel R. Wagstaff
  • Publication number: 20190062886
    Abstract: The present disclosure generally provides 7xxx series aluminum alloy products in a stable T4 temper. The disclosure also provides methods of making such products, for example, using processes that include a combination of casting, rolling, solutionizing, quenching, reheating, and slow cooling. The disclosure also provides various end uses of such products, such as in automotive, transportation, electronics, and industrial applications.
    Type: Application
    Filed: August 28, 2018
    Publication date: February 28, 2019
    Applicant: Novelis Inc.
    Inventors: David Leyvraz, Samuel R. Wagstaff, Steve Clerc, Rajasekhar Talla, Rajeev G. Kamat
  • Publication number: 20180304584
    Abstract: Provided herein are new clad aluminum alloy products and methods of making these alloys. These alloy products possess a combination of strength and other key attributes, such as corrosion resistance, formability, and joining capabilities. The alloy products can be used in a variety of applications, including automotive, transportation, and electronics applications.
    Type: Application
    Filed: April 23, 2018
    Publication date: October 25, 2018
    Applicant: Novelis Inc.
    Inventors: Rajeev G. Kamat, Hashem Mousavi-Anijdan, Rahul Vilas Kulkarni, Juergen Timm, Corrado Bassi, Robert Bruce Wagstaff, Guillaume Florey, Cyrille Bezencon, Samuel R. Wagstaff, David Leyvraz
  • Publication number: 20180171453
    Abstract: Disclosed are high-strength aluminum alloys and methods of making and processing such alloys. More particularly, disclosed are aluminum alloys exhibiting improved mechanical strength. The processing method includes homogenizing, hot rolling, solutionizing, and multiple-step quenching. In some cases, the processing steps can further include annealing and/or cold rolling.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 21, 2018
    Applicant: Novelis Inc.
    Inventors: David Leyvraz, Jonathan Friedli, Aude Despois, Guillaume Florey
  • Publication number: 20180171452
    Abstract: Disclosed are high-strength, highly deformable aluminum alloys and methods of making and processing such alloys. More particularly, disclosed is a heat treatable aluminum alloy exhibiting improved mechanical strength and formability. The processing method includes casting, homogenizing, hot rolling, solutionizing, pre-aging and in some cases pre-straining. In some cases, the processing steps can further include cold rolling and/or heat treating.
    Type: Application
    Filed: December 12, 2017
    Publication date: June 21, 2018
    Applicant: Novelis Inc.
    Inventors: Guillaume Florey, Corrado Bassi, Aude Despois, David Leyvraz