Patents by Inventor Joan Katherine McKiever

Joan Katherine McKiever 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).

  • METHOD FOR REMOVAL OF CORES FROM NIOBIUM-BASED PART, AND RELATED CASTING PROCESS
    Publication number: 20080295988
    Abstract: A method of removing an yttria-based core from a niobium-based part is described. In the method, the core is treated with an effective amount of a leaching composition. The leaching composition is based on nitric acid, or a combination of nitric acid and phosphoric acid. The core material is effectively removed from the niobium-based part, and the process of removing the core does not detrimentally affect the quality of the part. Related casting techniques for various niobium-based parts are also described.
    Type: Application
    Filed: July 3, 2008
    Publication date: December 4, 2008
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Stephen Francis Bancheri, Frederic Joseph Klug, Robert Joseph Lyons, Joan Katherine McKiever