Patents by Inventor Promila Bhatia

Promila Bhatia 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).

  • Non-carcinogenic corrosion inhibiting additive
    Patent number: 7341677
    Abstract: A non-carcinogenic corrosion inhibiting additive includes an anodic corrosion inhibitor and/or a cathodic corrosion inhibitor and a solubility enhancer for the inhibitors in the form of a metal complexing agent.
    Type: Grant
    Filed: June 30, 2003
    Date of Patent: March 11, 2008
    Assignee: United Technologies Corporation
    Inventors: Xiaomei Yu, Weilong Zhang, Thomas Garosshen, Promila Bhatia, Mark Jaworowski, Foster Lamm, Xia Tang, Amy Besing, Mike A. Kryzman, Xiaoyuan Chang
  • Corrosion resistant trivalent chromium phosphated chemical conversion coatings
    Patent number: 7018486
    Abstract: An acidic aqueous solution containing a water soluble trivalent chromium compound is provided with a additive for improving corrosion resistance and reducing precipitation of trivalent chromium over time. A suitable additive is nitrilotris (methylene) triphosphonic acid (NTMP).
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: March 28, 2006
    Assignee: United Technologies Corporation
    Inventor: Promila Bhatia
  • Corrosion resistant trivalent chromium phosphated chemical conversion coatings
    Publication number: 20050178475
    Abstract: An acidic aqueous solution containing a water soluble trivalent chromium compound is provided with a additive for improving corrosion resistance and reducing precipitation of trivalent chromium over time. A suitable additive is nitrilotris (methylene) triphosphonic acid (NTMP).
    Type: Application
    Filed: June 27, 2002
    Publication date: August 18, 2005
    Inventor: Promila Bhatia
  • Non-carcinogenic corrosion inhibiting additive
    Publication number: 20040262580
    Abstract: A non-carcinogenic corrosion inhibiting additive includes an anodic corrosion inhibitor and/or a cathodic corrosion inhibitor and a solubility enhancer for the inhibitors in the form of a metal complexing agent.
    Type: Application
    Filed: June 30, 2003
    Publication date: December 30, 2004
    Inventors: Xiaomei Yu, Weilong Zhang, Thomas Garosshen, Promila Bhatia, Mark Jaworowski, Foster Lamm, Xia Tang, Amy Besing, Mike A. Kryzman, Xiaoyuan Chang
  • Zinc-diffused alloy coating for corrosion/heat protection
    Patent number: 6756134
    Abstract: The present invention relates to a zinc-diffused nickel alloy coating for corrosion and heat protection and to a method for forming such a coating. The coating method broadly comprises the steps of forming a plain nickel or nickel alloy coating layer on a substrate, applying a layer of zinc over the nickel or nickel alloy coating layer, and thermally diffusing the zinc into the nickel alloy coating layer. The coating method may further comprise immersing the coated substrate in a phosphated trivalent chromium conversion solution either before or after the diffusing step. The substrate may be a component used in a gas turbine engine, which component is formed from a steel material.
    Type: Grant
    Filed: September 23, 2002
    Date of Patent: June 29, 2004
    Assignee: United Technologies Corporation
    Inventors: Henry M. Hodgens, Thomas R. Hanlon, Promila Bhatia
  • Corrosion resistant trivalent chromium phosphated chemical conversion coatings
    Publication number: 20040000358
    Abstract: An acidic aqueous solution containing a water soluble trivalent chromium compound is provided with a additive for improving corrosion resistance and reducing precipitation of trivalent chromium over time. A suitable additive is nitrilotris (methylene) triphosphonic acid (NTMP).
    Type: Application
    Filed: June 27, 2002
    Publication date: January 1, 2004
    Inventor: Promila Bhatia
  • Stability additive for trivalent chrome conversion coating bath solutions
    Patent number: 6648986
    Abstract: An acidic aqueous solution containing a water soluble trivalent chromium compound is provided with a solution stability additive for reducing precipitation of trivalent chromium over time. The concentration of the solution stability additive varies based on the complexing capability of the additive. Suitable additives for use as solution stability additives in accordance with the present invention are selected from the group consisting of acetic acid, glycolic acid, and mixtures thereof.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: November 18, 2003
    Assignee: United Technologies Corporation
    Inventors: Xia Tang, Promila Bhatia, Joseph John Parkos, Jr., Gary M. Lomasney, Mark Jaworowski