Patents by Inventor Ky D Ngo

Ky D Ngo 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).

  • Process for repairing sulfidation damaged turbine components
    Patent number: 7146990
    Abstract: A process is provided for cleaning a surface of an internal cavity of a gas turbine component having sulfidation or sulfur bearing deposits comprising: inserting into the internal cavity a fluoride salt; and heating the fluoride salt and the component in an inert atmosphere for a time and at a temperature to clean the sulfidation or sulfur bearing deposits on the surface. In a preferred embodiment the cleaned internal surface is then coated with a metallic coating.
    Type: Grant
    Filed: July 26, 2005
    Date of Patent: December 12, 2006
    Assignee: Chromalloy Gas Turbine Corporation
    Inventors: Ky D Ngo, David C. Fairbourn, Xuan Nguyen-Dinh