Patents by Inventor Duane D. Johnson

Duane D. Johnson 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).

  • Electrocatalyst for water electrolysis
    Publication number: 20230227988
    Abstract: A cathode is provided for electrolysis of water wherein the cathode material comprises a multi-principal element, transition metal dichalcogenide material that has four or more chemical elements and that is a single phase, solid solution. The pristine cathode material does not contain platinum as a principal (major) component. However, a cathode comprising a transition metal dichalcogenide having platinum (Pt) nanosized islands or precipitates disposed thereon is also provided.
    Type: Application
    Filed: January 12, 2023
    Publication date: July 20, 2023
    Inventors: Viktor Balema, Sonal Padalkar, Ihor Hlova, Tian Lan, Oleksandr Dolotko, Vitalij K. Pecharsky, Duane D. Johnson, Arjun K. Pathak, Prashant Singh
  • Electrocatalyst for water electrolysis
    Patent number: 11585000
    Abstract: A cathode is provided for electrolysis of water wherein the cathode material comprises a multi-principal element, transition metal dichalcogenide material that has four or more chemical elements and that is a single phase, solid solution. The pristine cathode material does not contain platinum as a principal (major) component. However, a cathode comprising a transition metal dichalcogenide having platinum (Pt) nanosized islands or precipitates disposed thereon is also provided.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: February 21, 2023
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Viktor Balema, Sonal Padalkar, Ihor Hlova, Tian Lan, Oleksandr Dolotko, Vitalij K. Pecharsky, Duane D. Johnson, Arjun K. Pathak, Prashant Singh
  • Electrocatalyst for water electrolysis
    Publication number: 20200109479
    Abstract: A cathode is provided for electrolysis of water wherein the cathode material comprises a multi-principal element, transition metal dichalcogenide material that has four or more chemical elements and that is a single phase, solid solution. The pristine cathode material does not contain platinum as a principal (major) component. However, a cathode comprising a transition metal dichalcogenide having platinum (Pt) nanosized islands or precipitates disposed thereon is also provided.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 9, 2020
    Inventors: Viktor Balema, Sonal Padalkar, Ihor Hlova, Tian Lan, Oleksandr Dolotko, Vitalij K. Pecharsky, Duane D. Johnson, Arjun K. Pathak, Prashant Singh
  • Quantum chemistry simulations using optimization methods
    Patent number: 8301390
    Abstract: Embodiments of the present invention provide, among other things, methods, apparatus, and systems for tuning a semiempirical process for predicting energy for different molecular configurations. In an example method, an energy value and an energy gradient are determined for each of a plurality of molecular configurations using an accurate method. A functional form of the semiempirical process is optimized using the determined energy values and energy gradients via multiobjective optimization. The functional form relates one or more parameters to energy values and energy gradients.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: October 30, 2012
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Kumara Sastry, Duane D. Johnson, Alexis L. Thompson, Todd J. Martinez, David E. Goldberg
  • Quantum chemistry simulations using optimization methods
    Publication number: 20080312895
    Abstract: Embodiments of the present invention provide, among other things, methods, apparatus, and systems for tuning a semiempirical process for predicting energy for different molecular configurations. In an example method, an energy value and an energy gradient are determined for each of a plurality of molecular configurations using an accurate method. A functional form of the semiempirical process is optimized using the determined energy values and energy gradients via multiobjective optimization. The functional form relates one or more parameters to energy values and energy gradients.
    Type: Application
    Filed: January 31, 2008
    Publication date: December 18, 2008
    Inventors: Kumara Sastry, Duane D. Johnson, Alexis L. Thompson, Todd J. Martinez, David E. Goldberg