Patents by Inventor Alfred P. Kaulius

Alfred P. Kaulius 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).

  • Crucible for melting high chromium alloys
    Publication number: 20080269041
    Abstract: A crucible material comprises in weight % as a dry particulates mixture, before sintering, about 89% to about 93% ZrO2, about 7% to about 11% Y2O3, up to about 0.6% SiO2 as an impurity element, and is substantially free of magnesia. The crucible can be used in the melting or holding of a high chromium sputtering target alloy to provide a low oxygen concentration of the melted alloy of 300 ppm by weight or less.
    Type: Application
    Filed: April 30, 2007
    Publication date: October 30, 2008
    Inventor: Alfred P. Kaulius
  • Crucible material and crucible
    Publication number: 20040102308
    Abstract: A crucible material whose chemical composition consists essentially of, in weight %, about 93.5% to about 97.5% ZrO2, about 0.2% to about 1.0% MgO, about 1.0% to about 3.0% SiO2, and about 1.5% to about 2.5% Y2O3 wherein the SiO2 can be present as silica and a silicate of zirconium, magnesium, and/or yttrium. When formed to a crucible shape and sintered (fired) at elevated temperature, the ceramic material provides a crucible with improved resistance to thermal shock when heated to over 1100 degrees C.
    Type: Application
    Filed: November 6, 2002
    Publication date: May 27, 2004
    Inventors: Robert E. Simpson, Matthew W. Willer, Alfred P. Kaulius
  • Impregnated alumina-based core and method
    Patent number: 6494250
    Abstract: An impregnated fired porous alumina-based ceramic core for use in an investment shell mold in the casting of molten metals and alloys wherein the core is impregnated with yttria to improve core creep resistance at elevated casting temperatures and times.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: December 17, 2002
    Assignee: Howmet Research Corporation
    Inventors: Gregory R. Frank, Ronald J. Keller, Rodney S. Haaland, Charles F. Caccavale, Alfred P. Kaulius, Jr.
  • IMPREGNATED ALUMINA-BASED CORE AND METHOD
    Publication number: 20020185243
    Abstract: An impregnated fired porous alumina-based ceramic core for use in an investment shell mold in the casting of molten metals and alloys wherein the core is impregnated with yttria to improve core creep resistance at elevated casting temperatures and times.
    Type: Application
    Filed: August 8, 2001
    Publication date: December 12, 2002
    Inventors: Gregory R. Frank, Ronald J. Keller, Rodney S. Haaland, Charles F. Caccavale, Alfred P. Kaulius