Patents by Inventor Surya G. K. Prakash

Surya G. K. Prakash 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).

  • Publication number: 20230113398
    Abstract: A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.
    Type: Application
    Filed: November 22, 2022
    Publication date: April 13, 2023
    Inventors: SRI NARAYAN, SURYA G.K. PRAKASH, BO YANG, LENA HOOBER-BURKHARDT, SANKARGANESH KRISHNAMOORTHY
  • Patent number: 11532830
    Abstract: A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: December 20, 2022
    Assignee: University of Southern California
    Inventors: Sri Narayan, Surya G. K. Prakash, Bo Yang, Lena Hoober-Burkhardt, Sankarganesh Krishnamoorthy
  • Publication number: 20200176802
    Abstract: A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.
    Type: Application
    Filed: February 10, 2020
    Publication date: June 4, 2020
    Inventors: Sri NARAYAN, Surya G.K. PRAKASH, Bo YANG, Lena HOOBER-BURKHARDT, Sankarganesh KRISHNAMOORTHY
  • Patent number: 10586995
    Abstract: A membrane electrode assembly includes an anode catalyst layer, a cathode catalyst layer, and a polymeric blend proton exchange membrane interposed between the anode catalyst layer and the cathode catalyst layer. The polymeric blend proton exchange membrane includes a scaffold polymer and a polyacid polymer. The polyacid polymer being formed from a polyacid polymer precursor. Characteristically, the scaffold polymer and the polyacid polymer precursor have matching solubility parameters.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: March 10, 2020
    Assignee: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Thieo E. Hogen-Esch, Ming Li, Surya G. K. Prakash
  • Patent number: 10566643
    Abstract: A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: February 18, 2020
    Assignee: UNIVERSITY OF SOUTHERN CALIFORNIA
    Inventors: Sri Narayan, Surya G. K. Prakash, Bo Yang, Lena Hoober-Burkhardt, Sankarganesh Krishnamoorthy
  • Publication number: 20170187060
    Abstract: A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.
    Type: Application
    Filed: March 14, 2017
    Publication date: June 29, 2017
    Inventors: SRI NARAYAN, SURYA G.K. PRAKASH, BO YANG, LENA HOOBER-BURKHARDT, SANKARGANESH KRISHNAMOORTHY
  • Patent number: 9614245
    Abstract: A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: April 4, 2017
    Assignee: University of Southern California
    Inventors: Sri Narayan, Surya G. K. Prakash, Bo Yang, Lena Hoober-Burkhardt, Sankarganesh Krishnamoorthy
  • Publication number: 20160049678
    Abstract: A membrane electrode assembly includes an anode catalyst layer, a cathode catalyst layer, and a polymeric blend proton exchange membrane interposed between the anode catalyst layer and the cathode catalyst layer. The polymeric blend proton exchange membrane includes a scaffold polymer and a polyacid polymer. The polyacid polymer being formed from a polyacid polymer precursor. Characteristically, the scaffold polymer and the polyacid polymer precursor have matching solubility parameters.
    Type: Application
    Filed: August 18, 2015
    Publication date: February 18, 2016
    Inventors: Thieo E. HOGEN-ESCH, Ming LI, Surya G. K. PRAKASH
  • Publication number: 20140370403
    Abstract: A flow battery includes a positive electrode, a positive electrode electrolyte, a negative electrode, a negative electrode electrolyte, and a polymer electrolyte membrane interposed between the positive electrode and the negative electrode. The positive electrode electrolyte includes water and a first redox couple. The first redox couple includes a first organic compound which includes a first moiety in conjugation with a second moiety. The first organic compound is reduced during discharge while during charging the reduction product of the first organic compound is oxidized to the first organic compound. The negative electrode electrolyte includes water and a second redox couple. The second couple includes a second organic compound including a first moiety in conjugation with a second moiety. The reduction product of the second organic compound is oxidized to the second organic compound during discharge.
    Type: Application
    Filed: June 17, 2014
    Publication date: December 18, 2014
    Inventors: Sri NARAYAN, Surya G. K. PRAKASH, Bo YANG, Lena Hoober-Burkhardt, Sankarganesh Krishnamoorthy
  • Publication number: 20080169763
    Abstract: A light generating plasma is produced inside a partially transparent barrier enclosure made specifically of N-Type semiconductive material, said plasma thus generating a thermal gradient across said barrier which drives electrons through said barrier via the thermoelectric power of said N-Type semiconductor, said electrons thus being liberated on the opposing side of said barrier where they interact with oxygen in the air to form the superoxide ion, O2?, and a second electrode on said opposing being at a critical minimum negative bias potential to quench collateral production of positive ions and ensuring production only of negative, O2?, ions, and said light emanating from said plasma being useful visible light when it is transmitted through said barrier and into the region outside of said enclosure.
    Type: Application
    Filed: March 7, 2008
    Publication date: July 17, 2008
    Inventors: Doug Burke, Surya G.K. Prakash
  • Patent number: 7365956
    Abstract: A plasma is generated inside a barrier enclosure made specifically of N-Type semiconductive material, said plasma thus generating a thermal gradient across said barrier which drives electrons through said barrier via the thermoelectric power of said N-Type semiconductor, said electrons thus being liberated on the opposing side of said barrier where they interact with oxygen in the air to form the superoxide ion, O2?, and a second electrode on said opposing being at a critical minimum negative bias potential to quench collateral production of positive ions and ensuring production only of negative, O2?, ions.
    Type: Grant
    Filed: September 15, 2005
    Date of Patent: April 29, 2008
    Inventors: Douglas Burke, Surya G. K. Prakash
  • Patent number: 5290428
    Abstract: A process is provided for hydrocracking a heavy oil bitumen and chemically related feedstock. The process comprises reacting said feedstock with a gaseous superacid in the presence of hydrogen with or without the use of a hydrogen transfer agent to thereby yield lower boiling point distillates.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: March 1, 1994
    Assignee: Alberta Oil Sands Technology and Research Authority
    Inventors: Otto P. Strausz, Thomas W. Mojelsky, John D. Payzant, George A. Olah, Surya G. K. Prakash