Patents by Inventor Ralph R. Sawtell

Ralph R. Sawtell 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: 10570485
    Abstract: New 2xxx aluminum alloys containing vanadium are disclosed. In one embodiment, the aluminum alloy includes 3.3-4.1 wt. % Cu, 0.7-1.3 wt. % Mg, 0.01-0.16 wt. % V, 0.05-0.6 wt. % Mn, 0.01 to 0.4 wt. % of at least one grain structure control element, the balance being aluminum, incidental elements and impurities. The new alloys may realize an improved combination of properties, such as in the T39 or T89 tempers.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: February 25, 2020
    Assignee: ARCONIC INC.
    Inventors: Jen C. Lin, Ralph R. Sawtell, Gary H. Bray, Cindie Giummarra, Andre Wilson, Gregory B. Venema
  • Patent number: 10450640
    Abstract: Aluminum alloy products, such as plate, forgings and extrusions, suitable for use in making aerospace structural components like integral wing spars, ribs and webs, comprises about: 6 to 10 wt. % Zn; 1.2 to 1.9 wt. % Mg; 1.2 to 2.2 wt. % Cu, with Mg?(Cu+0.3); and 0.05 to 0.4 wt. % Zr, the balance Al, incidental elements and impurities. Preferably, the alloy contains about 6.9 to 8.5 wt. % Zn; 1.2 to 1.7 wt. % Mg; 1.3 to 2 wt. % Cu. This alloy provides improved combinations of strength and fracture toughness in thick gauges. When artificially aged per the 3-stage method of preferred embodiments, this alloy also achieves superior SCC performance, including under seacoast conditions.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: October 22, 2019
    Assignee: ARCONIC INC.
    Inventors: Dhruba J. Chakrabarti, John Liu, Jay H. Goodman, Gregory B. Venema, Ralph R. Sawtell, Cynthia M. Krist, Robert W. Westerlund
  • Patent number: 10435774
    Abstract: The present application discloses wrought 2xxx Al—Li alloy products that are work insensitive. The wrought aluminum alloy products generally include from about 2.75 wt. % to about 5.0 wt. % Cu, from about 0.2 wt. % to about 0.8 wt. % Mg, where the ratio of copper-to-magnesium ratio (Cu/Mg) in the aluminum alloy is in the range of from about 6.1 to about 17, from about 0.1 wt. % to 1.10 wt. % Li, from about 0.3 wt. % to about 2.0 wt. % Ag, from 0.50 wt. % to about 1.5 wt. % Zn, up to about 1.0 wt. % Mn, the balance being aluminum, optional incidental elements, and impurities. The wrought aluminum alloy products may realize a low strength differential and in a short aging time due to their work insensitive nature.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: October 8, 2019
    Assignee: ARCONIC INC.
    Inventors: Cagatay Yanar, Roberto J. Rioja, Jen C. Lin, Ralph R. Sawtell
  • Publication number: 20190040505
    Abstract: High strength forged aluminum alloys and methods for producing the same are disclosed. The forged aluminum alloy products may have grains having a high aspect ratio in at least two planes, generally the L-ST and the LT-ST planes. The forged aluminum alloy products may also have a high amount of texture. The forged products may realize increased strength relative to conventionally prepared forged products of comparable product form, composition and temper.
    Type: Application
    Filed: October 11, 2018
    Publication date: February 7, 2019
    Inventors: Dustin M. Bush, Edward L. Colvin, Roberto J. Rioja, Ralph R. Sawtell
  • Patent number: 10119183
    Abstract: New magnesium-zinc aluminum alloy bodies and methods of producing the same are disclosed. The new magnesium-zinc aluminum alloy bodies generally include 3.0-6.0 wt. % magnesium and 2.5-5.0 wt. % zinc, where at least one of the magnesium and the zinc is the predominate alloying element of the aluminum alloy bodies other than aluminum, and wherein (wt. % Mg)/(wt. % Zn) is from 0.6 to 2.40, and may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new magnesium-zinc aluminum alloy bodies may realize improved strength and other properties.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: November 6, 2018
    Assignee: ARCONIC INC.
    Inventors: Jen C. Lin, John M. Newman, Ralph R. Sawtell, Rajeev G. Kamat, Darl G. Boysel, Gary H. Bray, James Daniel Bryant, Brett P. Connor, Mario Greco, Gino Norman Iasella, David J. McNeish, Shawn J. Murtha, Roberto J. Rioja, Shawn P. Sullivan
  • Patent number: 10119184
    Abstract: High strength forged aluminum alloys and methods for producing the same are disclosed. The forged aluminum alloy products may have grains having a high aspect ratio in at least two planes, generally the L-ST and the LT-ST planes. The forged aluminum alloy products may also have a high amount of texture. The forged products may realize increased strength relative to conventionally prepared forged products of comparable product form, composition and temper.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: November 6, 2018
    Assignee: ARCONIC INC.
    Inventors: Dustin M. Bush, Edward L. Colvin, Roberto J. Rioja, Ralph R. Sawtell
  • Patent number: 10053754
    Abstract: High strength forged aluminum alloys and methods for producing the same are disclosed. The forged aluminum alloy products may have grains having a high aspect ratio in at least two planes, generally the L-ST and the LT-ST planes. The forged aluminum alloy products may also have a high amount of texture. The forged products may realize increased strength relative to conventionally prepared forged products of comparable product form, composition and temper.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: August 21, 2018
    Assignee: Arconic Inc.
    Inventors: Dustin M. Bush, Edward L. Colvin, Roberto J. Rioja, Ralph R. Sawtell
  • Patent number: 9926620
    Abstract: New 2xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 2xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 2xxx aluminum alloy bodies may realize improved strength and other properties.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: March 27, 2018
    Assignee: Arconic Inc.
    Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin
  • Patent number: 9856552
    Abstract: Heat treatable aluminum alloy strips and methods for making the same are disclosed. The heat treatable aluminum alloy strips are continuously cast and quenched, with optional rolling occurring before and/or after quenching. After quenching, the heat treatable aluminum alloy strip is neither annealed nor solution heat treated.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: January 2, 2018
    Assignee: ARCONIC INC.
    Inventors: Ralph R. Sawtell, John M. Newman, Thomas N. Rouns, Raymond J. Kilmer
  • Publication number: 20170137920
    Abstract: New magnesium-zinc aluminum alloy bodies and methods of producing the same are disclosed. The new magnesium-zinc aluminum alloy bodies generally include 3.0-6.0 wt. % magnesium and 2.5-5.0 wt. % zinc, where at least one of the magnesium and the zinc is the predominate alloying element of the aluminum alloy bodies other than aluminum, and wherein (wt. % Mg)/(wt. % Zn) is from 0.6 to 2.40, and may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new magnesium-zinc aluminum alloy bodies may realize improved strength and other properties.
    Type: Application
    Filed: January 30, 2017
    Publication date: May 18, 2017
    Inventors: Jen C. Lin, John M. Newman, Ralph R. Sawtell, Rajeev G. Kamat, Darl G. Boysel, Gary H. Bray, James Daniel Bryant, Brett P. Connor, Mario Greco, Gino Norman Iasella, David J. McNeish, Shawn J. Murtha, Roberto J. Rioja, Shawn P. Sullivan
  • Patent number: 9587298
    Abstract: New magnesium-zinc aluminum alloy bodies and methods of producing the same are disclosed. The new magnesium-zinc aluminum alloy bodies generally include 3.0-6.0 wt. % magnesium and 2.5-5.0 wt. % zinc, where at least one of the magnesium and the zinc is the predominate alloying element of the aluminum alloy bodies other than aluminum, and wherein (wt. % Mg)/(wt. % Zn) is from 0.6 to 2.40, and may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new magnesium-zinc aluminum alloy bodies may realize improved strength and other properties.
    Type: Grant
    Filed: March 9, 2013
    Date of Patent: March 7, 2017
    Assignee: ARCONIC INC.
    Inventors: Jen C. Lin, John M. Newman, Ralph R. Sawtell, Rajeev G. Kamat, Darl G. Boysel, Gary H. Bray, James Daniel Bryant, Brett P. Connor, Mario Greco, Gino Norman Iasella, David J. McNeish, Shawn J. Murtha, Roberto J. Rioja, Shawn P. Sullivan
  • Patent number: 9587294
    Abstract: Improved aluminum-copper-lithium alloys are disclosed. The alloys may include 3.4-4.2 wt. % Cu, 0.9-1.4 wt. % Li, 0.3-0.7 wt. % Ag, 0.1-0.6 wt. % Mg, 0.2-0.8 wt. % Zn, 0.1-0.6 wt. % Mn, and 0.01-0.6 wt. % of at least one grain structure control element, the balance being aluminum and incidental elements and impurities. The alloys achieve an improved combination of properties over prior art alloys.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: March 7, 2017
    Assignee: ARCONIC INC.
    Inventors: Edward L. Colvin, Roberto J. Rioja, Les A. Yocum, Diana K. Denzer, Todd K. Cogswell, Gary H. Bray, Ralph R. Sawtell, Andre L. Wilson
  • Patent number: 9528174
    Abstract: Heat treatable aluminum alloy strips and methods for making the same are disclosed. The heat treatable aluminum alloy strips are continuously cast and quenched, with optional rolling occurring before and/or after quenching. After quenching, the heat treatable aluminum alloy strip is neither annealed nor solution heat treated.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: December 27, 2016
    Assignee: Arconic Inc.
    Inventors: Ralph R. Sawtell, John M. Newman, Thomas N. Rouns, Raymond J. Kilmer
  • Patent number: 9359660
    Abstract: New 6xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 6xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 6xxx aluminum alloy bodies may realize improved strength and other properties.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: June 7, 2016
    Assignee: Alcoa Inc.
    Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin
  • Publication number: 20160122852
    Abstract: New 7xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 7xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 7xxx aluminum alloy bodies may realize improved strength and other properties.
    Type: Application
    Filed: November 25, 2015
    Publication date: May 5, 2016
    Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin
  • Publication number: 20160115577
    Abstract: New 2xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 2xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 2xxx aluminum alloy bodies may realize improved strength and other properties.
    Type: Application
    Filed: November 12, 2015
    Publication date: April 28, 2016
    Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin
  • Patent number: 9249484
    Abstract: New 7xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 7xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 7xxx aluminum alloy bodies may realize improved strength and other properties.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: February 2, 2016
    Assignee: ALCOA INC.
    Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin
  • Publication number: 20150376743
    Abstract: High strength forged aluminum alloys and methods for producing the same are disclosed. The forged aluminum alloy products may have grains having a high aspect ratio in at least two planes, generally the L-ST and the LT-ST planes. The forged aluminum alloy products may also have a high amount of texture. The forged products may realize increased strength relative to conventionally prepared forged products of comparable product form, composition and temper.
    Type: Application
    Filed: September 8, 2015
    Publication date: December 31, 2015
    Inventors: Dustin M. Bush, Edward L. Colvin, Roberto J. Rioja, Ralph R. Sawtell
  • Patent number: 9217622
    Abstract: Improved 5xxx aluminum alloys and products made therefrom are disclosed. The new 5xxx aluminum alloy products may achieve an improved combination of properties due to, for example, the presence of copper. In one embodiment, the new 5xxx aluminum alloy products are able to achieve an improved combination of properties by solution heat treatment.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: December 22, 2015
    Assignee: Alcoa Inc.
    Inventors: Dirk C. Mooy, Roberto J. Rioja, Ralph R. Sawtell, Francine S. Bovard, Gregory B. Venema, David A. Linde
  • Patent number: 9194028
    Abstract: New 2xxx aluminum alloy bodies and methods of producing the same are disclosed. The new 2xxx aluminum alloy bodies may be produced by preparing the aluminum alloy body for post-solutionizing cold work, cold working by at least 25%, and then thermally treating. The new 2xxx aluminum alloy bodies may realize improved strength and other properties.
    Type: Grant
    Filed: September 8, 2011
    Date of Patent: November 24, 2015
    Assignee: Alcoa Inc.
    Inventors: Rajeev G. Kamat, John M. Newman, Ralph R. Sawtell, Jen C. Lin