Patents by Inventor Lynn E. Oswald

Lynn E. Oswald 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).

  • Method for increasing the strength and/or corrosion resistance of 7000 series Al aerospace alloy products
    Publication number: 20030051784
    Abstract: This invention relates to a method for artificially aging 7000 Series A1 aerospace alloys to impart improved strength and/or corrosion resistance performance thereto. The method purposefully adds a second aging step or stage to a one-step tempering, or a third step/stage to a low-high, two-step aging operation. The added step/stage extends at about 225-275° F. for about 3-24 hours. More preferably, the added stage extends at about 250° F. for about 6 hours or more.
    Type: Application
    Filed: March 20, 2002
    Publication date: March 20, 2003
    Inventors: Diana K. Denzer, Dhruba J. Chakrabarti, John Liu, Lynn E. Oswald, Robert W. Westerlund
  • Alclad inset into grooved ingot
    Patent number: 6251527
    Abstract: The present invention is directed to the application of a liner material which is corrosion resistant to a strong and tough core aluminum alloy which has been grooved out creating a liner bed resulting in an Alclad structure.
    Type: Grant
    Filed: April 13, 1999
    Date of Patent: June 26, 2001
    Assignee: Alcoa Inc.
    Inventors: Eric Victor Schelin, Lynn E. Oswald, Brian C. Reynolds, Cherlyn J. Augenstein