Patents by Inventor Sven E. Axter

Sven E. Axter 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).

  • Aluminum-lithium alloy
    Patent number: 5133930
    Abstract: An aluminum-lithium alloy exhibiting good fracture toughness and relatively high strength has a nominal composition of 2.2 percent lithium, 0.6 percent magnesium, 2.5 percent copper, 0.12 percent zirconium with the balance being aluminum and trace elements.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: July 28, 1992
    Assignee: The Boeing Company
    Inventors: G. Hari Narayanan, R. Eugene Curtis, William E. Quist, Michael V. Hyatt, Sven E. Axter
  • Aluminum-lithium alloy
    Patent number: 5116572
    Abstract: An aluminum-lithium alloy exhibiting good fracture toughness and relatively high strength has a nominal composition of 2.2 percent lithium, 0.6 percent magnesium, 2.5 percent copper, 0.12 percent zirconium with the balance being aluminum and trace elements.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: May 26, 1992
    Assignee: The Boeing Company
    Inventors: G. Hari Narayanan, R. Eugene Curtis, William E. Quist, Michael V. Hyatt, Sven E. Axter
  • Lithium bearing alloys free of Luder lines
    Patent number: 4889569
    Abstract: Aluminum-lithium alloy sheets are stretched under predetermined temperature and stretch rate conditions to provide contoured metal sheets. The temperature and stretch rate conditions provide a stretched sheet which is substantially free of Luder lines that are conventionally associated with stretch-formed aluminum-lithium alloy sheets.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: December 26, 1989
    Assignee: The Boeing Company
    Inventors: Wesley H. Graham, Sven E. Axter, Fu-Shiong Lin
  • Aluminum alloy products and method of making same
    Patent number: 4336075
    Abstract: A 2000 series aluminum alloy characterized by high strength, high fatigue resistance, and high fracture toughness consists essentially of 4.2 to 4.7 percent copper, 1.3 to 1.8 percent magnesium, 0.8 to 1.3 percent manganese, 0.08 to 0.15 percent zirconium, maximums of 0.15 percent iron, 0.12 percent silicon, 0.25 percent zinc, 0.15 percent titanium, 0.10 percent chromium, 0.05 percent of each of any other trace elements present, and a maximum total of such other trace elements of 0.15 percent, the balance of the alloy being aluminum. The foregoing alloy is hot-worked and heat-treated to yield a final wrought product having a highly elongated and substantially unrecrystallized microstructure.
    Type: Grant
    Filed: December 28, 1979
    Date of Patent: June 22, 1982
    Assignee: The Boeing Company
    Inventors: William E. Quist, Michael V. Hyatt, Sven E. Axter