Patents by Inventor Krishna R. Gunugunuri

Krishna R. Gunugunuri 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).

  • Zinc doped manganese-iron spinel catalyst material and method of making and using the same
    Patent number: 11311861
    Abstract: Catalyst for oxygen storage capacity applications that include a zinc doped manganese-iron spinel mixed oxide material. The zinc doped manganese-iron spinel mixed oxide material may be synthesized by a co-precipitation method using a precipitation agent such as sodium carbonate and exhibits a high oxygen storage capacity.
    Type: Grant
    Filed: April 13, 2020
    Date of Patent: April 26, 2022
    Assignee: TOYOTA MOTOR ENGINEERING AND MANUFACTURING NORTH AMERICA, INC.
    Inventors: Torin C. Peck, Benjamin A. Grayson, Blake A. Graham, Charles A. Roberts, Krishna R. Gunugunuri
  • ZINC DOPED MANGANESE-IRON SPINEL CATALYST MATERIAL AND METHOD OF MAKING AND USING THE SAME
    Publication number: 20210316281
    Abstract: Catalyst for oxygen storage capacity applications that include a zinc doped manganese-iron spinel mixed oxide material. The zinc doped manganese-iron spinel mixed oxide material may be synthesized by a co-precipitation method using a precipitation agent such as sodium carbonate and exhibits a high oxygen storage capacity.
    Type: Application
    Filed: April 13, 2020
    Publication date: October 14, 2021
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Torin C. Peck, Benjamin A. Grayson, Blake A. Graham, Charles A. Roberts, Krishna R. Gunugunuri
  • Copper oxides supported on spinel oxides as catalysts for low temperature direct NOx decomposition
    Patent number: 10434471
    Abstract: Active catalysts for the treatment of a low temperature exhaust gas stream are provided containing copper oxides dispersed on a spinel oxide for the direct, lean removal of nitrogen oxides from the exhaust gas stream. The low temperature, direct decomposition is accomplished without the need of a reductant molecule. In one example, CuOx may be dispersed as a monolayer on a metal oxide support, such as Co3O4 spinel oxide, synthesized using an incipient wetness impregnation technique. The CuOx/Co3O4 catalyst system converts nitric oxide to nitrogen gas with high product specificity, avoiding the production of a significant concentration of the undesirable N2O product.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: October 8, 2019
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Torin C. Peck, Michael Jones, Krishna R. Gunugunuri, Charles Alexander Roberts
  • COPPER OXIDES SUPPORTED ON SPINEL OXIDES AS CATALYSTS FOR LOW TEMPERATURE DIRECT NOx DECOMPOSITION
    Publication number: 20180296978
    Abstract: Active catalysts for the treatment of a low temperature exhaust gas stream are provided containing copper oxides dispersed on a spinel oxide for the direct, lean removal of nitrogen oxides from the exhaust gas stream. The low temperature, direct decomposition is accomplished without the need of a reductant molecule. In one example, CuOx may be dispersed as a monolayer on a metal oxide support, such as Co3O4 spinel oxide, synthesized using an incipient wetness impregnation technique. The CuOx/Co3O4 catalyst system converts nitric oxide to nitrogen gas with high product specificity, avoiding the production of a significant concentration of the undesirable N2O product.
    Type: Application
    Filed: April 17, 2017
    Publication date: October 18, 2018
    Inventors: Torin C. Peck, Michael Jones, Krishna R. Gunugunuri, Charles Alexander Roberts