Patents by Inventor Gerhard Subat

Gerhard Subat 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).

  • Blast heating apparatus for blast furnaces
    Patent number: 4508504
    Abstract: A blast heating apparatus includes an inner metal shell having therein a refractory lining. An outer metal shell surrounds at least a portion of the inner metal shell and defines therewith a double shell structure. Spacers are positioned between the outer and inner metal shells to define therebetween a gap. At least a portion of such gap is filled with a pourable dry material having a grain size of up to 8 mm and a heat conductivity of at least approximately 1.5 W/Km.
    Type: Grant
    Filed: May 5, 1983
    Date of Patent: April 2, 1985
    Assignee: Didier-Werke AG
    Inventors: Friedrich Eschmann, Gunter Gelsdorf, Peter Nold, Gotthard Staats, Gerhard Subat