Patents by Inventor John C. Oelund

John C. Oelund 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: 6149795
    Abstract: An improved method of anodizing an aluminum or aluminum alloy workpiece including the steps of: (a) providing an aqueous anodizing bath consisting essentially by weight of about 3 to 5 percent sulfuric acid, from about 0.5 to 1 percent boric acid, not more than about 5.0 g/L aluminum ion, not more than about 0.2 percent chloride ion, and a fungistat consisting of benzoic acid, a water-soluble salt of benzoic acid selected from the group consisting of sodium benzoate, potassium benzoate, or lithium benzoate, or mixtures thereof, the fungistat having a concentration in the range of about one part per million (1 ppm) to about ten thousand parts per million (10,000 ppm) by weight; (b) maintaining the bath at a temperature from about 70 to about 90 degrees F.
    Type: Grant
    Filed: January 27, 1999
    Date of Patent: November 21, 2000
    Assignee: The Boeing Company
    Inventors: John C. Oelund, Warren J. Fullen, David L. Crump