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).
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Patent number: 11932928Abstract: 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: GrantFiled: May 14, 2019Date of Patent: March 19, 2024Assignee: NOVELIS INC.Inventors: Aude Despois, Guillaume Florey, Rajeev G. Kamat, Cyrille Bezencon, David Leyvraz, Samuel R. Wagstaff
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Patent number: 11814713Abstract: 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: GrantFiled: November 11, 2019Date of Patent: November 14, 2023Assignee: 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
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Publication number: 20230313353Abstract: 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: ApplicationFiled: September 16, 2021Publication date: October 5, 2023Applicant: Novelis Inc.Inventors: Yudie Yuan, Ganesh Bhaskaran, Anna E. Janoff, Cedric Wu, Rajeev G. Kamat, David Leyvraz
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Patent number: 11766846Abstract: 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: GrantFiled: June 15, 2020Date of Patent: September 26, 2023Assignee: 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
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Publication number: 20230211401Abstract: 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: ApplicationFiled: July 21, 2021Publication date: July 6, 2023Applicant: 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
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Patent number: 11530473Abstract: 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: GrantFiled: December 12, 2017Date of Patent: December 20, 2022Assignee: Novelis Inc.Inventors: Guillaume Florey, Corrado Bassi, Aude Despois, David Leyvraz
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Patent number: 11466351Abstract: 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: GrantFiled: May 14, 2019Date of Patent: October 11, 2022Assignee: Novells Inc.Inventors: Cyrille Bezencon, David Leyvraz, Aude Celine Despois, Samuel R. Wagstaff
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Patent number: 10995397Abstract: 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: GrantFiled: December 12, 2017Date of Patent: May 4, 2021Assignee: NOVELIS INC.Inventors: David Leyvraz, Jonathan Friedli, Aude Despois, Guillaume Florey
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Publication number: 20200307160Abstract: 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: ApplicationFiled: June 15, 2020Publication date: October 1, 2020Applicant: 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
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Patent number: 10730266Abstract: 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: GrantFiled: April 23, 2018Date of Patent: August 4, 2020Assignee: 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
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Publication number: 20200149141Abstract: 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: ApplicationFiled: November 11, 2019Publication date: May 14, 2020Applicant: 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
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Publication number: 20200095664Abstract: 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: ApplicationFiled: November 27, 2019Publication date: March 26, 2020Applicant: 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
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Publication number: 20200082973Abstract: 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: ApplicationFiled: September 10, 2019Publication date: March 12, 2020Applicant: NOVELIS INC.Inventors: RAHUL VILAS KULKARNI, CEDRIC WU, TODD SUMME, EMANUEL BECK, MICHELE EDITH BERNER, KURT SEKINGER, DAVID LEYVRAZ, THERESA ELIZABETH MACFARLANE
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Patent number: 10538834Abstract: 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: GrantFiled: December 16, 2016Date of Patent: January 21, 2020Assignee: NOVELIS INC.Inventors: Wei Wen, Hany Ahmed, Rajeev Kamat, Corrado Bassi, Guillaume Florey, Cyrille Bezencon, Juergen Timm, David Leyvraz, Aude Despois, Sazol Kumar Das
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Publication number: 20190352759Abstract: 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: ApplicationFiled: May 14, 2019Publication date: November 21, 2019Applicant: Novelis Inc.Inventors: Aude Despois, Guillaume Florey, Rajeev G. Kamat, Cyrille Bezencon, David Leyvraz, Samuel R. Wagstaff
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Publication number: 20190352758Abstract: 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: ApplicationFiled: May 14, 2019Publication date: November 21, 2019Applicant: Novelis Inc.Inventors: Cyrille Bezencon, David Leyvraz, Aude Celine Despois, Samuel R. Wagstaff
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Publication number: 20190062886Abstract: 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: ApplicationFiled: August 28, 2018Publication date: February 28, 2019Applicant: Novelis Inc.Inventors: David Leyvraz, Samuel R. Wagstaff, Steve Clerc, Rajasekhar Talla, Rajeev G. Kamat
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Publication number: 20180304584Abstract: 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: ApplicationFiled: April 23, 2018Publication date: October 25, 2018Applicant: 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
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Publication number: 20180171453Abstract: 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: ApplicationFiled: December 12, 2017Publication date: June 21, 2018Applicant: Novelis Inc.Inventors: David Leyvraz, Jonathan Friedli, Aude Despois, Guillaume Florey
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Publication number: 20180171452Abstract: 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: ApplicationFiled: December 12, 2017Publication date: June 21, 2018Applicant: Novelis Inc.Inventors: Guillaume Florey, Corrado Bassi, Aude Despois, David Leyvraz