Patents Represented by Attorney, Agent or Law Firm Craig C. Cochenour
  • Stopper rod
    Patent number: 6511751
    Abstract: The invention concerns a stopper rod with a cylindrical stopper rod body comprising a fire-resistant, carbon-containing material, having a base part and a nose-like section made of a different fire-resistant material than the base part, whereby an interface extends between the nose-like section and the base part over the entire cross-section of the stopper rod body, wherein the nose-like section comprises a fire-resistant material wherein the carbon content burns out under oxidic atmosphere above 90° C., at least close to a surface area.
    Type: Grant
    Filed: December 11, 2000
    Date of Patent: January 28, 2003
    Assignee: Veitsch-Radex GmbH
    Inventors: Wolfram Höller, Dirk Masurat
  • Castable and gunning composition with improved resistance to build-up and alkali infiltration
    Patent number: 5753572
    Abstract: Mixes suitable for casting or gunning containing a heat-resistant aggregate blend containing at least about 50 wt. % high alumina grain, silicon carbide, and zircon sand, and to the method of utilizing the same to form alkali-resistant linings in high temperature vessels that have improved resistance to build-up.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: May 19, 1998
    Assignee: Harbison-Walker Refractories Company
    Inventors: Mark C. Langenohl, Christopher L. Macey