Patents by Inventor Jon C. Schaffer

Jon C. Schaffer 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).

  • Thermal barrier coating system having no bond coat
    Patent number: 5538796
    Abstract: A coated article is prepared by melting and casting an article substrate formed of a nickel-base superalloy. The article substrate is heated in a hydrogen-containing atmosphere at a temperature of at least 2000.degree. F. for a period sufficient to desulfurize the substrate to a sulfur content of less than about 1 part per million. Optionally, an aluminum-oxide environmental coating is provided overlying the substrate. A ceramic thermal barrier coating is applied overlying the substrate. Significantly, there being no bond coat applied to the substrate prior to the application of the thermal barrier coating.
    Type: Grant
    Filed: October 13, 1992
    Date of Patent: July 23, 1996
    Assignee: General Electric Company
    Inventors: Jon C. Schaffer, Wendy H. Murphy, William B. Connor, Bangalore A. Nagaraj, Himanshu B. Vakil