Patents by Inventor Alexandre Maltais

Alexandre Maltais 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: 20230016262
    Abstract: There is provided a high strength high formable aluminum alloys (Al—Mg—Mn alloy). The aluminum alloy exhibits improved castability by achieving lower required torque at high temperature, while meeting or exceeding the ambient temperature strength and formability requirements for high strength applications. The aluminum alloy comprises in weight percent Mg 1.0-2.0, 0.2-0.95 Mn, 0.05-0.35 Cr with the balance being aluminum and inevitable impurities.
    Type: Application
    Filed: December 7, 2020
    Publication date: January 19, 2023
    Inventors: Mousa Javidani, Alexandre Maltais, Clément Boudreault, Martin Fortier
  • Patent number: 11532407
    Abstract: The present disclosure concerns aluminum conductor alloys having increased creep resistance, aluminum products comprising same and process using same. In some embodiments, the aluminum conductor alloy comprises, in weight percent: up to about 0.10 Si; up to about 0.5 Fe; up to about 0.30 Cu; between about 0.02 and about 0.1 Mg; up to about 0.04 B; and the balance being aluminum and unavoidable impurities.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: December 20, 2022
    Assignee: UNIVERSITE DU QUEBEC A CHICOUTIMI
    Inventors: Xiao-Grant Chen, Lei Pan, Kun Liu, Alexandre Maltais, Bruno Bourassa
  • Publication number: 20220090234
    Abstract: The present disclosure concerns a cast aluminum alloy for making cast aluminum products, especially using high-pressure vacuum die casting operations. The cast aluminum alloy comprises, in weight percent: Ni between about 1.5 and about 6.5; Si between about 0.10 and 1.5; Mg between about 0.10 and about 3; Fe up to about 0.2; Mn up to about 0.65; Ti up to about 0.12; V up to about 0.15; Zr up to about 0.15; Mo up to about 0.15; Cr up to about 0.01; Sr up to about 0.02; and the balance being aluminum and unavoidable impurities.
    Type: Application
    Filed: January 24, 2020
    Publication date: March 24, 2022
    Inventors: Francis Breton, Martin Morel, Alexandre Maltais
  • Patent number: 11198925
    Abstract: The present disclosure provides Al—Si—Mg aluminum alloys comprising a deliberate addition of Mn between 0.05-0.40 weight percent to increase at least one tensile property (such as the yield strength) of an aluminum product comprising such alloy. The Al—Si—Mg alloy comprises, in weight percent, 5-9% Si, 0.35-0.75% Mg, 0.05-0.4% Mn, less than 0.15% Fe, up to 0.15% Ti, 0.005-0.03% Sr and the balance being aluminum and unavoidable impurities, wherein the unavoidable impurities may be present in an amount of up to 0.05% each and up to 0.15% total. The present disclosure provides a foundry ingot comprising the above Al—Si—Mg aluminum alloy, a process for making the above Al—Si—Mg aluminum alloy and an aluminum alloy obtainable by said process.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: December 14, 2021
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Francis Breton, Bruno Bourassa, Alexandre Maltais, Clément Boudreault, Dany Tremblay
  • Publication number: 20210335516
    Abstract: The present disclosure concerns aluminum conductor alloys having increased creep resistance, aluminum products comprising same and process using same. In some embodiments, the aluminum conductor alloy comprises, in weight percent: up to about 0.10 Si; up to about 0.5 Fe; up to about 0.30 Cu; between about 0.02 and about 0.1 Mg; up to about 0.04 B; and the balance being aluminum and unavoidable impurities.
    Type: Application
    Filed: July 19, 2017
    Publication date: October 28, 2021
    Applicant: UNIVERSITE DU QUEBEC A CHICOUTIMI
    Inventors: Xiao-Grant CHEN, Lei PAN, Kun LIU, Alexandre MALTAIS, Bruno BOURASSA
  • Patent number: 10669616
    Abstract: An aluminum alloy composition includes, in weight percent: 0.7-1.10 manganese; 0.05-0.25 iron; 0.21-0.30 silicon; 0.005-0.020 nickel; 0.10-0.20 titanium; 0.014 max copper; and 0.05 max zinc, with the balance being aluminum and unavoidable impurities. The alloy may tolerate higher nickel contents than existing alloys, while providing increased corrosion resistance, as well as similar extrudability, strength, and performance. Billets of the alloy may be homogenized at 590-640° C. and controlled cooled at less than 250° C. per hour. The homogenized billet may be extruded into a product, such as an aluminum alloy heat exchanger tube.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: June 2, 2020
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Nicholas C. Parson, Raynald Guay, Alexandre Maltais
  • Publication number: 20190136349
    Abstract: The present disclosure provides Al—Si—Mg aluminum alloys comprising a deliberate addition of Mn between 0.05-0.40 weight percent to increase at least one tensile property (such as the yield strength) of an aluminum product comprising such alloy. The Al—Si—Mg alloy comprises, in weight percent, 5-9% Si, 0.35-0.75% Mg, 0.05-0.4% Mn, less than 0.15% Fe, up to 0.15% Ti, 0.005-0.03% Sr and the balance being aluminum and unavoidable impurities, wherein the unavoidable impurities may be present in an amount of up to 0.05% each and up to 0.15% total. The present disclosure provides a foundry ingot comprising the above Al—Si—Mg aluminum alloy, a process for making the above Al—Si—Mg aluminum alloy and an aluminum alloy obtainable by said process.
    Type: Application
    Filed: March 10, 2017
    Publication date: May 9, 2019
    Applicant: Rio Tinto Alcan International Limited
    Inventors: Francis Breton, Bruno Bourassa, Alexandre Maltais, Clément Boudreault, Dany Tremblay
  • Patent number: 10000828
    Abstract: An aluminum alloy having an excellent combination of strength, extrudability and corrosion resistance may include in weight percent, about 0.01% or less copper; about 0.15% or less iron; about 0.60 to about 0.90% manganese, where manganese and iron are present in the alloy in a Mn:Fe ratio of at least about 6.6; about 0.02% or less nickel; about 0.08 to about 0.30% silicon; about 0.10 to about 0.20% titanium; and about 0.05 to about 0.20% zinc; the balance being aluminum and unavoidable impurities. Extruded articles and other articles may be formed using the alloy. Methods of forming such articles may include homogenizing a billet of the alloy prior to forming the article.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: June 19, 2018
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Nicholas Charles Parson, Raynald Guay, Alexandre Maltais
  • Patent number: 9970090
    Abstract: An aluminum alloy includes, in weight percent, 0.70-0.85 Si, 0.14-0.25 Fe, 0.25-0.35 Cu, 0.05 max Mn, 0.75-0.90 Mg, 0.12-0.18 Cr, 0.05 max Zn, and 0.04 max Ti, the balance being aluminum and unavoidable impurities. The alloy may be suitable for extruding, and may be formed into an extruded alloy product.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: May 15, 2018
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Nick C. Parson, Raynald Guay, Alexandre Maltais
  • Publication number: 20170096731
    Abstract: An aluminum alloy includes, in weight percent, 0.70-0.85 Si, 0.14-0.25 Fe, 0.25-0.35 Cu, 0.05 max Mn, 0.75-0.90 Mg, 0.12-0.18 Cr, 0.05 max Zn, and 0.04 max Ti, the balance being aluminum and unavoidable impurities. The alloy may be suitable for extruding, and may be formed into an extruded alloy product.
    Type: Application
    Filed: December 19, 2016
    Publication date: April 6, 2017
    Inventors: Nick C. Parson, Raynald Guay, Alexandre Maltais
  • Publication number: 20160153073
    Abstract: An aluminum alloy having an excellent combination of strength, extrudability and corrosion resistance may include in weight percent, about 0.01% or less copper; about 0.15% or less iron; about 0.60 to about 0.90% manganese, where manganese and iron are present in the alloy in a Mn:Fe ratio of at least about 6.6; about 0.02% or less nickel; about 0.08 to about 0.30% silicon; about 0.10 to about 0.20% titanium; and about 0.05 to about 0.20% zinc; the balance being aluminum and unavoidable impurities. Extruded articles and other articles may be formed using the alloy. Methods of forming such articles may include homogenizing a billet of the alloy prior to forming the article.
    Type: Application
    Filed: April 26, 2013
    Publication date: June 2, 2016
    Inventors: Nicholas Charles PARSON, Raynald GUAY, Alexandre MALTAIS
  • Publication number: 20140083569
    Abstract: An aluminum alloy composition includes, in weight percent: 0.7-1.10 manganese; 0.05-0.25 iron; 0.21-0.30 silicon; 0.005-0.020 nickel; 0.10-0.20 titanium; 0.014 max copper; and 0.05 max zinc, with the balance being aluminum and unavoidable impurities. The alloy may tolerate higher nickel contents than existing alloys, while providing increased corrosion resistance, as well as similar extrudability, strength, and performance. Billets of the alloy may be homogenized at 590-640° C. and controlled cooled at less than 250° C. per hour. The homogenized billet may be extruded into a product, such as an aluminum alloy heat exchanger tube.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 27, 2014
    Applicant: Rio Tinto Alcan International Limited
    Inventors: Nicholas C. Parson, Raynald Guay, Alexandre Maltais
  • Publication number: 20130319585
    Abstract: An aluminum alloy includes, in weight percent, 0.70-0.85 Si, 0.14-0.25 Fe, 0.25-0.35 Cu, 0.05 max Mn, 0.75-0.90 Mg, 0.12-0.18 Cr, 0.05 max Zn, and 0.04 max Ti, the balance being aluminum and unavoidable impurities. The alloy may be suitable for extruding, and may be formed into an extruded alloy product.
    Type: Application
    Filed: May 30, 2013
    Publication date: December 5, 2013
    Inventors: Nick C. Parson, Raynald Guay, Alexandre Maltais
  • Patent number: 8025748
    Abstract: An extrudable aluminum alloy billet includes an aluminum alloy composition including, in weight percent, between 0.90 and 1.30 manganese, between 0.05 and 0.25 iron, between 0.05 and 0.25 silicon, between 0.01 and 0.02 titanium, less than 0.01 copper, less than 0.01 nickel, and less than 0.05 magnesium, the aluminum alloy billet being homogenized at a temperature ranging between 550 and 600° C.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: September 27, 2011
    Assignee: Rio Tinto Alcan International Limited
    Inventors: Nicholas Charles Parson, Alexandre Maltais
  • Publication number: 20090301611
    Abstract: An extrudable aluminum alloy billet includes an aluminum alloy composition including, in weight percent, between 0.90 and 1.30 manganese, between 0.05 and 0.25 iron, between 0.05 and 0.25 silicon, between 0.01 and 0.02 titanium, less than 0.01 copper, less than 0.01 nickel, and less than 0.05 magnesium, the aluminum alloy billet being homogenized at a temperature ranging between 550 and 600° C.
    Type: Application
    Filed: June 9, 2009
    Publication date: December 10, 2009
    Inventors: Nicholas Charles Parson, Alexandre Maltais