Patents by Inventor Khurram Shahzad Chaudhry

Khurram Shahzad Chaudhry 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).

  • 2xxx series aluminum lithium alloys
    Patent number: 9458528
    Abstract: New 2xxx aluminum lithium alloys are disclosed. The aluminum alloys include 3.5-4.4 wt. % Cu, 0.45-0.75 wt. % Mg, 0.45-0.75 wt. % Zn, 0.65-1.15 wt. % Li, 0.1-1.0 wt. % Ag, 0.05-0.50 wt. % of at least one grain structure control element, up to 1.0 wt. % Mn, up to 0.15 wt. % Ti, up to 0.12 wt. % Si, up to 0.15 wt. % Fe, up to 0.10 wt. % of any other element, with the total of these other elements not exceeding 0.35 wt. %, the balance being aluminum.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: October 4, 2016
    Assignee: Alcoa Inc.
    Inventors: Julien Boselli, Jen Lin, Roberto J. Rioja, Feyen Gerriet, Khurram Shahzad Chaudhry
  • 2XXX SERIES ALUMINUM LITHIUM ALLOYS
    Publication number: 20130302206
    Abstract: New 2xxx aluminum lithium alloys are disclosed. The aluminum alloys include 3.5-4.4 wt. % Cu, 0.45-0.75 wt. % Mg, 0.45-0.75 wt. % Zn, 0.65-1.15 wt. % Li, 0.1-1.0 wt. % Ag, 0.05-0.50 wt. % of at least one grain structure control element, up to 1.0 wt. % Mn, up to 0.15 wt. % Ti, up to 0.12 wt. % Si, up to 0.15 wt. % Fe, up to 0.10 wt. % of any other element, with the total of these other elements not exceeding 0.35 wt. %, the balance being aluminum.
    Type: Application
    Filed: March 13, 2013
    Publication date: November 14, 2013
    Inventors: Julien Boselli, Jen Lin, Roberto J. Rioja, Feyen Gerriet, Khurram Shahzad Chaudhry