Patents by Inventor Franz Josef Brodmann

Franz Josef Brodmann 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).

  • Alkali resistant perlite - CaO vitreous fibers
    Patent number: 3985935
    Abstract: Alkali resistant glass fibers and mineral wool are produced from perlite by heating perlite ores until the melt viscosity is under 15 poise and impinging a stream of the melt with a gas at from 80 to 100 psig to produce the fibers.
    Type: Grant
    Filed: October 16, 1973
    Date of Patent: October 12, 1976
    Assignee: General Refractories Company
    Inventor: Franz Josef Brodmann