Patents by Inventor Lynn Oswald

Lynn 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 of manufacturing heat treated sheet and plate with reduced levels of residual stress and improved flatness
    Publication number: 20060118217
    Abstract: This invention describes a method of producing a flat aluminum sheet product by providing an aluminum alloy stock, hot working the aluminum alloy stock through preheating and hot rolling, side sawing the aluminum alloy stock, subjecting the aluminum alloy stock to solution heat treatment, cold rolling the aluminum alloy stock to reduce its thickness by about 0.25% to about 5%, and finally stretching the aluminum alloy stock.
    Type: Application
    Filed: December 7, 2004
    Publication date: June 8, 2006
    Inventors: Lynn Oswald, Greg Venema, Robert Schultz
  • Method for increasing the strength and/or corrosion resistance of 7000 Series AI aerospace alloy products
    Publication number: 20050269000
    Abstract: This invention relates to a method for artificially aging 7000 Series Al 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: December 3, 2004
    Publication date: December 8, 2005
    Inventors: Diana Denzer, Dhruba Chakrabarti, John Liu, Lynn Oswald, Robert Westerlund