Patents by Inventor Louis J. Trostel

Louis J. Trostel 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).

  • Furnance having dense refractory oxide liner
    Patent number: 4823359
    Abstract: A refractory product is shown in the form of a dense sintered alumina-chromia, zirconia-alumina-silica, zirconia-alumina body, or zirconia-chromia-alumina having less than about 8% of homogeneously distributed closed porosity formed by sintering an intimate interdispersion of fine particles of alumina-chromia, zirconia-alumina-silica, zirconia-alumina, or zirconia-chromia-alumina.
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: April 18, 1989
    Assignee: Norton Company
    Inventors: Neil N. Ault, Anthony K. Butkus, Louis J. Trostel
  • Refractory cement
    Patent number: 4476234
    Abstract: A novel raw batch and improved fired refractory cement is described. A bulk refractory grain mass is initially bonded with a fired bond, which upon being fired includes Si.sub.3 N.sub.4 and/or Si.sub.2 ON.sub.2 reaction component that better protects the ultimate high temperature sintered cement product from erosion when the cement is used as a liner for furnace walls, troughs, and runners that contain a flow of molten iron or slag, as well as induction furnaces which process corrosive slag.
    Type: Grant
    Filed: August 12, 1983
    Date of Patent: October 9, 1984
    Assignee: Norton Company
    Inventors: Cecil M. Jones, Malcolm E. Washburn, Louis J. Trostel, Jr.
  • Sintered alumina body
    Patent number: 3979214
    Abstract: A polycrystalline monolithic sintered alumina refractory body (for use as kiln furniture, and crucibles or nozzles for containment of molten metal) is of fine crystalline sintered aluminum oxide including 15 to 44% by weight of grains of silicon carbide dispersed throughout, such silicon carbide preferably having a sizing between 6 and 46 mesh, but in any case at least 75% being coarser than 100 mesh, such bodies having superior thermal stability and shock resistance.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: September 7, 1976
    Assignee: Norton Company
    Inventor: Louis J. Trostel, Jr.