Patents by Inventor Edmund C. Franz

Edmund C. Franz 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).

  • Architectural aluminum alloy sheet and method therefor
    Patent number: 4098619
    Abstract: An improved aluminum alloy, temper insensitive to color anodizing, consists essentially of, by weight, 0.40-0.60% Si, 0.20-0.40% Fe, 0.30-0.60% Mn, the balance essentially aluminum and incidental elements and impurities in an amount insufficient to render the alloy temper sensitive to anodizing.
    Type: Grant
    Filed: February 12, 1976
    Date of Patent: July 4, 1978
    Assignee: Aluminum Company of America
    Inventor: Edmund C. Franz