Patents by Inventor Albert L. Renkey

Albert L. Renkey 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).

  • Burned refractories with low soluble chromium
    Patent number: 5322827
    Abstract: A burned chrome-containing refractory and method which provides a refractory having less than 5 ppm total soluble chromium. Such product is obtained by adding to the starting mix less than 10 wt. % (often less than 3 wt. %) zirconia, silica, zircon, or molybdic oxide either individually or in combination.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: June 21, 1994
    Assignee: Indresco, Inc.
    Inventors: David J. Michael, Albert L. Renkey, Kenneth A. McGowan
  • High purity fused grain in the system Al.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 -MGO
    Patent number: 5206193
    Abstract: High purity fused grain and refractory compositions that contain a high purity fused grain made up of 35 to 85 wt. % chromia, 5 to 55 wt. % alumina, and 5 to 45 wt. % magnesia. Burned refractory brick having such a chemistry was found to unexpectedly possess superior resistance to AOD and electric furnace slags.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: April 27, 1993
    Assignee: Indresco, Inc.
    Inventors: Albert L. Renkey, Stanley R. Pavlica
  • Carbon bonded refractories
    Patent number: 4521357
    Abstract: Refractory brick comprising a refractory aggregate, carbonaceous material and powdered metal bonded with a combination of liquid thermosetting resin and impregnating pitch.
    Type: Grant
    Filed: May 2, 1983
    Date of Patent: June 4, 1985
    Assignee: Dresser Industries, Inc.
    Inventors: Mark C. Kernion, Albert L. Renkey