Patents by Inventor George Barac

George Barac 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).

  • Heat and mass transfer component comprising a lubricant-impregnated surface
    Patent number: 11525641
    Abstract: A heat and mass transfer component comprises a lubricant-impregnated surface including hydrophobic surface features, which comprise nanostructured surface protrusions having a hydrophobic species attached thereto. The hydrophobic surface features are impregnated with a fluorinated lubricant having a viscosity in a range from about 400 mPa·s to about 6000 mPa·s. A method of fabricating a lubricant-impregnated surface on a heat and mass transfer component comprises: cleaning a thermally conductive substrate to form a cleaned substrate; exposing the cleaned substrate to a hot water or hot alkaline solution to form a thermally conductive substrate having nanostructured surface protrusions; depositing a hydrophobic species on the nanostructured surface protrusions to form hydrophobic surface features; and coating the hydrophobic surface features with a fluorinated lubricant having a viscosity in a range from 400 mPa·s to 6000 mPa·s.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: December 13, 2022
    Assignee: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
    Inventors: Nenad Miljkovic, Soumyadip Sett, George Barac, Leslie W. Bolton
  • HEAT AND MASS TRANSFER COMPONENT COMPRISING A LUBRICANT-IMPREGNATED SURFACE
    Publication number: 20200333087
    Abstract: A heat and mass transfer component comprises a lubricant-impregnated surface including hydrophobic surface features, which comprise nanostructured surface protrusions having a hydrophobic species attached thereto. The hydrophobic surface features are impregnated with a fluorinated lubricant having a viscosity in a range from about 400 mPa·s to about 6000 mPa·s. A method of fabricating a lubricant-impregnated surface on a heat and mass transfer component comprises: cleaning a thermally conductive substrate to form a cleaned substrate; exposing the cleaned substrate to a hot water or hot alkaline solution to form a thermally conductive substrate having nanostructured surface protrusions; depositing a hydrophobic species on the nanostructured surface protrusions to form hydrophobic surface features; and coating the hydrophobic surface features with a fluorinated lubricant having a viscosity in a range from 400 mPa·s to 6000 mPa·s.
    Type: Application
    Filed: April 21, 2020
    Publication date: October 22, 2020
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Nenad Miljkovic, Soumyadip Sett, George Barac, Leslie W. Bolton
  • Integrated dimerization process
    Patent number: 6756514
    Abstract: A process for dimerizing vinyl olefins that is fully integrated into a process for making vinyl olefins is disclosed.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: June 29, 2004
    Assignee: BP Corporation North America Inc.
    Inventors: George Barac, Larry L. Bendig, William L. Cox, Larry H. Nemec
  • INTEGRATED DIMERIZATION PROCESS
    Publication number: 20040110999
    Abstract: A process for dimerizing vinyl olefins that is fully integrated into a process for making vinyl olefins is disclosed.
    Type: Application
    Filed: December 9, 2002
    Publication date: June 10, 2004
    Inventors: George Barac, Larry L. Bendig, William L. Cox, Larry H. Nemec