Patents by Inventor Vinod P. Pareek

Vinod P. Pareek 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 coating honeycomb seal using a slurry containing aluminum
    Patent number: 8318251
    Abstract: A method and composition are provided for coating honeycomb seals and, more specifically, to a method and slurry for applying an aluminide coating onto honeycomb seals. The method includes preparing a slurry of a powder containing a metallic aluminum alloy having a melting temperature higher than aluminum, an activator capable of forming a reactive halide vapor with the metallic aluminum, and a binder containing an organic polymer. The slurry is applied to surfaces of the honeycomb seal, which is then heated to remove or burn off the binder, vaporize and react the activator with the metallic aluminum to form the halide vapor, react the halide vapor at the substrate surfaces to deposit aluminum on the surfaces of the seal, and diffuse the deposited aluminum into the surfaces to form a diffusion aluminide coating.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: November 27, 2012
    Assignee: General Electric Company
    Inventors: Dennis William Cavanaugh, Vinod P. Pareek, Nuo Sheng, Surinder Pabla, Daniel J. Dorriety
  • METHOD AND COMPOSITION FOR COATING OF HONEYCOMB SEALS
    Publication number: 20110074113
    Abstract: A method and composition are provided for coating honeycomb seals and, more specifically, to a method and slurry for applying an aluminide coating onto honeycomb seals. The method includes preparing a slurry of a powder containing a metallic aluminum alloy having a melting temperature higher than aluminum, an activator capable of forming a reactive halide vapor with the metallic aluminum, and a binder containing an organic polymer. The slurry is applied to surfaces of the honeycomb seal, which is then heated to remove or burn off the binder, vaporize and react the activator with the metallic aluminum to form the halide vapor, react the halide vapor at the substrate surfaces to deposit aluminum on the surfaces of the seal, and diffuse the deposited aluminum into the surfaces to form a diffusion aluminide coating.
    Type: Application
    Filed: September 30, 2009
    Publication date: March 31, 2011
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: DENNIS WILLIAM CAVANAUGH, VINOD P. PAREEK, NUO SHENG, SURINDER PABLA, DANIEL J. DORRIETY