Patents by Inventor Umesh D. Harkal

Umesh D. Harkal 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).

  • Patent number: 11426762
    Abstract: Autodeposition coating compositions that deposit uncured coatings, on metallic surfaces of a substrate, which are curable at oven temperatures of less than 130° C., are provided as well as autodeposition methods, compositions and components for depositing such autodeposition coatings. More particularly, the invention relates to autodeposition coatings that cure at temperatures lower than conventional autodeposition coatings, while achieving chemical and corrosion performance comparable to higher temperature cure autodeposition coatings, as well as being directed to autodeposition coating compositions possessing improved storage stability and coating thermal stability, and articles of manufacture having cured and uncured autodeposited coatings deposited thereon.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: August 30, 2022
    Assignee: Henkel AG & Co. KGaA
    Inventors: Libin Du, Bashir M. Ahmed, Umesh D. Harkal, Omar Lutfi Abu-Shanab
  • Publication number: 20180340075
    Abstract: A polymeric coating composition comprising a polymeric binder composition, a plurality of nanoparticles, a solvent and a polymeric evaporative droplet templating agent that is different from the polymeric binder is provided. The coating composition can be spray applied to a wide variety of substrates and the as-applied coating composition is then dried and cured into a coating that exhibits a droplet-shaped morphology. The coating provides a highly effective anti-fingerprinting coating with a unique droplet-shaped morphology that can be seen using scanning electron microscopy and provides a cost-effective means to coat substrates having many different surface contours to hide fingerprints.
    Type: Application
    Filed: June 27, 2018
    Publication date: November 29, 2018
    Inventors: Umesh D. Harkal, John Zimmerman, John D. McGee, Gregory T. Donaldson, Libin Du
  • Publication number: 20180304306
    Abstract: Autodeposition coating compositions that deposit uncured coatings, on metallic surfaces of a substrate, which are curable at oven temperatures of less than 130° C., are provided as well as autodeposition methods, compositions and components for depositing such autodeposition coatings. More particularly, the invention relates to autodeposition coatings that cure at temperatures lower than conventional autodeposition coatings, while achieving chemical and corrosion performance comparable to higher temperature cure autodeposition coatings, as well as being directed to autodeposition coating compositions possessing improved storage stability and coating thermal stability, and articles of manufacture having cured and uncured autodeposited coatings deposited thereon.
    Type: Application
    Filed: June 28, 2018
    Publication date: October 25, 2018
    Inventors: Libin Du, Bashir M. Ahmed, Umesh D. Harkal, Omar Lutfi Abu-Shanab
  • Patent number: 9676895
    Abstract: The invention relates to novel aqueous coating compositions containing epoxy urethane (glycidyl carbamate) functional resin. An aqueous coating composition comprises a polyfunctional oligomer having at least two epoxy urethane functional groups and a polyalkylene oxide chain, an optional surfactant, and water. The aqueous coating compositions of the invention can be dispersed in water with or without added surfactants to form a dispersion containing no volatile organic solvent. The invention provides a method for making aqueous coating compositions containing epoxy urethane functional resin as well. Water-dispersible epoxy urethane compounds of the aqueous coating compositions are also provided.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: June 13, 2017
    Assignee: NDSU RESEARCH FOUNDATION
    Inventors: Umesh D. Harkal, Andrew J. Muehlberg, Peter A. Edwards, Dean C. Webster
  • Publication number: 20150099128
    Abstract: This invention relates to coating compositions comprising a linear glycidyl carbamate (GC) resin and a curing agent. The linear GC-resins were synthesized using linear and cycloaliphatic diisocyanates and a combination of diols and optional triols with glycidol. The combination of linear diisocyanates and diols introduces a more linear structure in the GC-resin compositions.
    Type: Application
    Filed: April 18, 2013
    Publication date: April 9, 2015
    Inventors: Umesh D. Harkal, Andrew J. Muehlberg, Dean C. Webster
  • Publication number: 20110263753
    Abstract: The invention relates to novel aqueous coating compositions containing epoxy urethane (glycidyl carbamate) functional resin. An aqueous coating composition comprises a polyfunctional oligomer having at least two epoxy urethane functional groups and a polyalkylene oxide chain, an optional surfactant, and water. The aqueous coating compositions of the invention can be dispersed in water with or without added surfactants to form a dispersion containing no volatile organic solvent. The invention provides a method for making aqueous coating compositions containing epoxy urethane functional resin as well. Water-dispersible epoxy urethane compounds of the aqueous coating compositions are also provided.
    Type: Application
    Filed: July 20, 2010
    Publication date: October 27, 2011
    Inventors: Umesh D. Harkal, Andrew J. Muehlberg, Peter A. Edwards, Dean C. Webster