Patents by Inventor Rajeev G. Kamat

Rajeev G. Kamat 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: 11932925
    Abstract: Provided herein are new aluminum alloys comprising Ca, Mg and/or Zn and new coated aluminum alloys comprising surface layers (e.g., coatings) comprising Ca, Mn, Zn, and/or Ni that can be used in aluminum alloy products, such as clad layers. Also provided are methods of making these aluminum alloys, coated aluminum alloys, and clad layers, as well as clad products. These alloys, coated alloys, clad layers, and products possess a combination of strength and other key attributes, such as corrosion resistance, formability, and applicability of paint line pretreatments. The materials can be used in a variety of applications, including automotive, transportation, and electronics applications.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: March 19, 2024
    Assignee: NOVELIS INC.
    Inventors: Aurèle Mariaux, Juergen Timm, Guillaume Florey, Emanuel Beck, Lasitha Cumaranatunge, Peter Lloyd Redmond, Duane E. Bendzinski, Aude Celine Despois, Theresa Elizabeth MacFarlane, Rajeev G. Kamat
  • 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
  • Publication number: 20230413395
    Abstract: A rotating magnet heater for metal products, such as aluminum strip, can include permanent magnet rotors arranged above and below a moving metal strip to induce moving or time varying magnetic fields through the metal strip. The changing magnetic fields can create currents (e.g., eddy currents) within the metal strip, thus heating the metal strip. A magnetic rotor set can include a pair of matched magnetic rotors on opposite sides of a metal strip that rotate at the same speed. Each magnetic rotor of a set can be positioned equidistance from the metal strip to avoid pulling the metal strip away from the passline. A downstream magnetic rotor set can be used in close proximity to an upstream magnetic rotor set to offset tension induced by the upstream magnetic rotor set.
    Type: Application
    Filed: August 31, 2023
    Publication date: December 21, 2023
    Applicant: Novelis Inc.
    Inventors: Antoine Jean Willy Pralong, Peter Knelsen, David Anthony Gaensbauer, Rodger Brown, Michael Kosmicki, David Michael Custers, Natasha Iyer, Robert Bruce Wagstaff, Alp Manavbasi, ChangOok Son, Duane E. Bendzinski, Rajeev G. Kamat, David Skingley Wright, Andrew James Hobbis, Christophe Besson
  • 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: 20230349033
    Abstract: Provided herein are highly formable aluminum alloys and methods of making the same. The highly formable aluminum alloys described herein can be prepared from recycled materials without significant addition of primary aluminum alloy material. The aluminum alloys are prepared by casting an aluminum alloy that can include such recycled materials and processing the resulting cast aluminum alloy article. Also described herein are methods of using the aluminum alloys and alloy products.
    Type: Application
    Filed: July 3, 2023
    Publication date: November 2, 2023
    Applicant: Novelis Inc.
    Inventors: Sazol Kumar Das, Matthew Heyen, Peter Evans, Martin Beech, ChangOok Son, Mark Marsh, Rajeev G. Kamat, Rainer Kossak, David Fryatt, David Scott Fisher, Guillaume Florey, Cyrille Bezencon, Juergen Timm
  • Patent number: 11785678
    Abstract: A rotating magnet heater for metal products, such as aluminum strip, can include permanent magnet rotors arranged above and below a moving metal strip to induce moving or time varying magnetic fields through the metal strip. The changing magnetic fields can create currents (e.g., eddy currents) within the metal strip, thus heating the metal strip. A magnetic rotor set can include a pair of matched magnetic rotors on opposite sides of a metal strip that rotate at the same speed. Each magnetic rotor of a set can be positioned equidistance from the metal strip to avoid pulling the metal strip away from the passline. A downstream magnetic rotor set can be used in close proximity to an upstream magnetic rotor set to offset tension induced by the upstream magnetic rotor set.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: October 10, 2023
    Assignee: NOVELIS INC.
    Inventors: Antoine Jean Willy Pralong, Peter Knelsen, David Anthony Gaensbauer, Rodger Brown, Michael Kosmicki, David Michael Custers, Natasha Iyer, Robert Bruce Wagstaff, Alp Manavbasi, ChangOok Son, Duane E. Bendzinski, Rajeev G. Kamat, David Skingley Wright, Andrew James Hobbis, Christophe Besson
  • 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
  • Patent number: 11746400
    Abstract: Provided herein are ultra-high strength aluminum alloys and products prepared therefrom, along with methods of processing the ultra-high strength aluminum alloys. The aluminum alloys described herein are high solute alloys, including significant amounts of zinc (Zn), magnesium (Mg), copper (Cu), and other elements in addition to aluminum. The aluminum alloys described herein are amenable to post-aging processing without cracking.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: September 5, 2023
    Assignee: Novelis Inc.
    Inventors: Sazol Kumar Das, Rajeev G. Kamat, Samuel Robert Wagstaff, Simon William Barker, Rajasekhar Talla, Tudor Piroteala
  • Publication number: 20230226598
    Abstract: A continuous casting and rolling line for casting, rolling, and otherwise preparing metal strip can produce distributable metal strip without requiring cold rolling or the use of a solution heat treatment line. A metal strip can be continuously cast from a continuous casting device and coiled into a metal coil, optionally after being subjected to post-casting quenching. This intermediate coil can be stored until ready for hot rolling. The as-cast metal strip can undergo reheating prior to hot rolling, either during coil storage or immediately prior to hot rolling. The heated metal strip can be cooled to a rolling temperature and hot rolled through one or more roll stands. The rolled metal strip can optionally be reheated and quenched prior to coiling for delivery. This final coiled metal strip can be of the desired gauge and have the desired physical characteristics for distribution to a manufacturing facility.
    Type: Application
    Filed: January 23, 2023
    Publication date: July 20, 2023
    Applicant: NOVELIS INC.
    Inventors: MILAN FELBERBAUM, SAZOL KUMAR DAS, AURELE MARIAUX, DUANE E. BENDZINSKI, CYRILLE BEZENCON, SIMON WILLIAM BARKER, CORRADO BASSI, RAJEEV G. KAMAT, TUDOR PIROTEALA, RAJASEKHAR TALLA, ROBERT BRUCE WAGSTAFF
  • 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: 11692255
    Abstract: Described herein are 7xxx series aluminum alloys with unexpected properties and novel methods of producing such aluminum alloys. The aluminum alloys exhibit high strength and are highly formable. The alloys are produced by continuous casting and can be hot rolled to a final gauge and/or a final temper. The alloys can be used in automotive, transportation, industrial, and electronics applications, just to name a few.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: July 4, 2023
    Assignee: Novelis Inc.
    Inventors: Milan Felberbaum, Sazol Kumar Das, Duane E. Bendzinski, Rajeev G. Kamat, Tudor Piroteala, Rajasekhar Talla
  • Publication number: 20230183841
    Abstract: Provided herein are aluminum alloys and methods of making these alloys. The aluminum alloys described herein are produced with a high content of recycled scrap. The recycled scrap may include used beverage can scrap and mixed alloy scrap (e.g., automotive scrap containing one or more of 5xxx, 6xxx, and/or 7xxx series aluminum alloys). Surprisingly, aluminum alloy products produced from the aluminum alloys including a high content of recycled scrap as described herein exhibit mechanical properties comparable to those displayed by high-performance aluminum alloy products, such as high tensile strength, good formability without cracking and/or fracture, and/or high elongation before fracture.
    Type: Application
    Filed: April 14, 2021
    Publication date: June 15, 2023
    Applicant: Novelis Inc.
    Inventors: Milan Felberbaum, Guillaume Florey, Debdutta Roy, Rajeev G. Kamat, Peter Lloyd Redmond, Caitlin M. Aramburu
  • Publication number: 20230099830
    Abstract: Described are aluminum alloy products that generally have a microstructure and composition that resists corrosion. This corrosion resistance, in turn, allows the aluminum alloy products to exhibit favorable bond durability performance, such as when adhesively bonded to another product. The corrosion resistance can be achieved by controlling the composition of the aluminum alloy, including the presence and/or concentration of certain intermetallic particles, such as ?-phase intermetallic particles and ?-phase intermetallic particles.
    Type: Application
    Filed: February 18, 2021
    Publication date: March 30, 2023
    Applicant: Novelis Inc.
    Inventors: Theresa Elizabeth MacFarlane, Lasitha Cumaranatunge, Sazol Kumar Das, Yudie Yuan, Thomas J. Beck, Rajeev G. Kamat, Peter Lloyd Redmond, John Anthony Hunter, Liangliang Li, Samuel Robert Wagstaff, Kumar Sundaram, Robert Bruce Wagstaff
  • Patent number: 11590565
    Abstract: A continuous casting and rolling line for casting, rolling, and otherwise preparing metal strip can produce distributable metal strip without requiring cold rolling or the use of a solution heat treatment line. A metal strip can be continuously cast from a continuous casting device and coiled into a metal coil, optionally after being subjected to post-casting quenching. This intermediate coil can be stored until ready for hot rolling. The as-cast metal strip can undergo reheating prior to hot rolling, either during coil storage or immediately prior to hot rolling. The heated metal strip can be cooled to a rolling temperature and hot rolled through one or more roll stands. The rolled metal strip can optionally be reheated and quenched prior to coiling for delivery. This final coiled metal strip can be of the desired gauge and have the desired physical characteristics for distribution to a manufacturing facility.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: February 28, 2023
    Assignee: Novelis Inc.
    Inventors: Milan Felberbaum, Sazol Kumar Das, Aurele Mariaux, Duane E. Bendzinski, Cyrille Bezencon, Simon William Barker, Corrado Bassi, Rajeev G. Kamat, Tudor Piroteala, Rajasekhar Talla, Robert Bruce Wagstaff
  • Publication number: 20230052639
    Abstract: Provided herein are new aluminum alloys comprising Ca, Mg and/or Zn and new coated aluminum alloys comprising surface layers (e.g., coatings) comprising Ca, Mn, Zn, and/or Ni that can be used in aluminum alloy products, such as clad layers. Also provided are methods of making these aluminum alloys, coated aluminum alloys, and clad layers, as well as clad products. These alloys, coated alloys, clad layers, and products possess a combination of strength and other key attributes, such as corrosion resistance, formability, and applicability of paint line pretreatments. The materials can be used in a variety of applications, including automotive, transportation, and electronics applications.
    Type: Application
    Filed: January 15, 2021
    Publication date: February 16, 2023
    Applicant: Novelis Inc.
    Inventors: Aurèle Mariaux, Juergen Timm, Guillaume Florey, Emanuel Beck, Lasitha Cumaranatunge, Peter Lloyd Redmond, Duane E. Bendzinski, Aude Celine Despois, Theresa Elizabeth MacFarlane, Rajeev G. Kamat
  • Publication number: 20220333229
    Abstract: Described herein are novel 7xxx series aluminum alloys. The alloys exhibit high strength. The alloys can be used in a variety of applications, including automotive, transportation, electronics, aerospace, and industrial applications. Also described herein are methods of making and processing the alloys. Further described herein are methods of producing a metal sheet, which include casting an aluminum alloy as described herein to form an ingot, homogenizing the ingot, hot rolling the ingot to produce a hot band, and cold rolling the hot band to a metal sheet of final gauge.
    Type: Application
    Filed: July 1, 2022
    Publication date: October 20, 2022
    Applicant: Novelis Inc.
    Inventors: RAJEEV G. KAMAT, DHRUBA J. CHAKRABARTI, RASHMI RASHMI MOHANTY, RAHUL VILAS KULKARNI, DUANE E. BENDZINSKI, JUERGEN TIMM
  • Patent number: 11466352
    Abstract: Described herein are formable, high strength aluminum alloy products and methods of preparing and processing the same. The methods of preparing and processing the aluminum alloy products include casting an aluminum alloy and performing tailored rolling and downstream thermal processing steps. The resulting aluminum alloy products possess high strength and formability properties.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: October 11, 2022
    Assignee: Novelis Inc.
    Inventors: Sazol Kumar Das, Rajeev G. Kamat, Rajasekhar Talla, Tudor Piroteala
  • Patent number: 11421309
    Abstract: Described herein are novel 7xxx series aluminum alloys. The alloys exhibit high strength. The alloys can be used in a variety of applications, including automotive, transportation, electronics, aerospace, and industrial applications. Also described herein are methods of making and processing the alloys. Further described herein are methods of producing a metal sheet, which include casting an aluminum alloy as described herein to form an ingot, homogenizing the ingot, hot rolling the ingot to produce a hot band, and cold rolling the hot band to a metal sheet of final gauge.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: August 23, 2022
    Assignee: Novelis Inc.
    Inventors: Rajeev G. Kamat, Dhruba J. Chakrabarti, Rashmi Ranjan Mohanty, Rahul Vilas Kulkarni, Duane E. Bendzinski, Juergen Timm
  • Publication number: 20220033947
    Abstract: The present invention relates to aluminum alloy products that can be riveted and possess excellent ductility and toughness properties. The present invention also relates to a method of producing the aluminum alloy products. In particular, these products have application in the automotive industry.
    Type: Application
    Filed: October 13, 2021
    Publication date: February 3, 2022
    Applicant: Novelis Inc.
    Inventors: Michael Bull, Rajeev G. Kamat