Patents by Inventor Neil N. Ault

Neil N. Ault 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