Patents by Inventor Uttam R. Doraswami

Uttam R. Doraswami 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: 20200001248
    Abstract: A dual function composite oxygen transport membrane having a layered structure of mixed conducting oxygen transport materials on a first side of a porous substrate and a reforming catalyst layer on an opposing second side of the porous substrate. The layered structure of the mixed conducting oxygen transport materials contains an intermediate porous layer of mixed conducting oxygen transport materials formed on the porous substrate with a dense impervious layer of mixed conducting oxygen transport materials over the intermediate porous layer, and an optional surface exchange layer of mixed conducting oxygen transport materials over the dense impervious layer. The layered structure and the reforming catalyst layer are formed in separate steps.
    Type: Application
    Filed: September 3, 2019
    Publication date: January 2, 2020
    Inventors: Jiefeng Lin, Pawel Plonczak, Sean M. Kelly, Uttam R. Doraswami, Jonathan A. Lane
  • Patent number: 10441922
    Abstract: A dual function composite oxygen transport membrane having a layered structure of mixed conducting oxygen transport materials on a first side of a porous substrate and a reforming catalyst layer on an opposing second side of the porous substrate. The layered structure of the mixed conducting oxygen transport materials contains an intermediate porous layer of mixed conducting oxygen transport materials formed on the porous substrate with a dense impervious layer of mixed conducting oxygen transport materials over the intermediate porous layer, and an optional surface exchange layer of mixed conducting oxygen transport materials over the dense impervious layer. The layered structure and the reforming catalyst layer are formed in separate steps.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: October 15, 2019
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Jiefeng Lin, Pawel Plonczak, Sean M. Kelly, Uttam R. Doraswami, Jonathan A. Lane
  • Patent number: 9776153
    Abstract: The invention relates to a commercially viable modular ceramic oxygen transport membrane system for utilizing heat generated in reactively-driven oxygen transport membrane tubes to generate steam, heat process fluid and/or provide energy to carry out endothermic chemical reactions. The system provides for improved thermal coupling of oxygen transport membrane tubes to steam generation tubes or process heater tubes or reactor tubes for efficient and effective radiant heat transfer.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: October 3, 2017
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Sean M. Kelly, Gervase Maxwell Christie, Charles Robinson, Jamie R. Wilson, Javier E. Gonzalez, Uttam R. Doraswami
  • Publication number: 20160375411
    Abstract: A dual function composite oxygen transport membrane having a layered structure of mixed conducting oxygen transport materials on a first side of a porous substrate and a reforming catalyst layer on an opposing second side of the porous substrate. The layered structure of the mixed conducting oxygen transport materials contains an intermediate porous layer of mixed conducting oxygen transport materials formed on the porous substrate with a dense impervious layer of mixed conducting oxygen transport materials over the intermediate porous layer, and an optional surface exchange layer of mixed conducting oxygen transport materials over the dense impervious layer. The layered structure and the reforming catalyst layer are formed in separate steps.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 29, 2016
    Inventors: Jiefeng Lin, Pawel Plonczak, Sean M. Kelly, Uttam R. Doraswami, Jonathan A. Lane
  • Patent number: 9486765
    Abstract: The invention relates to a commercially viable modular ceramic oxygen transport membrane reforming reactor configured using repeating assemblies of oxygen transport membrane tubes and catalytic reforming reactors.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: November 8, 2016
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Sean M. Kelly, Gervase Maxwell Christie, Charles Robinson, Jamie R. Wilson, Javier E. Gonzalez, Uttam R. Doraswami
  • Patent number: 9452401
    Abstract: A commercially viable modular ceramic oxygen transport membrane reforming reactor for producing a synthesis gas that improves the thermal coupling of reactively-driven oxygen transport membrane tubes and catalyst reforming tubes required to efficiently and effectively produce synthesis gas.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: September 27, 2016
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Sean M. Kelly, Gervase Maxwell Christie, Lee J. Rosen, Charles Robinson, Jamie R. Wilson, Javier E. Gonzalez, Uttam R. Doraswami
  • Publication number: 20150098868
    Abstract: The invention relates to a commercially viable modular ceramic oxygen transport membrane reforming reactor configured using repeating assemblies of oxygen transport membrane tubes and catalytic reforming reactors.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 9, 2015
    Inventors: Sean M. Kelly, Gervase Maxwell Christie, Charles Robinson, Jamie R. Wilson, Javier E. Gonzalez, Uttam R. Doraswami
  • Publication number: 20150096506
    Abstract: The invention relates to a commercially viable modular ceramic oxygen transport membrane system for utilizing heat generated in reactively-driven oxygen transport membrane tubes to generate steam, heat process fluid and/or provide energy to carry out endothermic chemical reactions. The system provides for improved thermal coupling of oxygen transport membrane tubes to steam generation tubes or process heater tubes or reactor tubes for efficient and effective radiant heat transfer.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 9, 2015
    Inventors: Sean M. Kelly, Gervase Maxwell Christie, Charles Robinson, Jamie R. Wilson, Javier E. Gonzalez, Uttam R. Doraswami
  • Publication number: 20150098872
    Abstract: A commercially viable modular ceramic oxygen transport membrane reforming reactor for producing a synthesis gas that improves the thermal coupling of reactively-driven oxygen transport membrane tubes and catalyst reforming tubes required to efficiently and effectively produce synthesis gas.
    Type: Application
    Filed: October 7, 2014
    Publication date: April 9, 2015
    Inventors: Sean M. Kelly, Gervase Maxwell Christie, Lee J. Rosen, Charles Robinson, Jamie R. Wilson, Javier E. Gonzalez, Uttam R. Doraswami
  • Publication number: 20140219884
    Abstract: An oxygen transport membrane assembly having a coating or overlay system is provided. The overlay or coating system is disposed on the one or more surfaces of the metal containing components within the oxygen transport membrane assembly and comprises a plurality of protective layers providing oxidation resistance, chromium diffusion barrier and high emissivity. The disclosed overlay or coating system may include at least one layer of an aluminum oxide or magnesium-aluminum oxide to provide an effective oxidation resistance and/or chromium diffusion barrier. In addition, the overlay or coating system includes a high emissivity layer such as a high porosity ceramic-oxide layer or an aluminum-phosphate layer including a plurality of carbon encapsulated within the aluminum-phosphate matrix.
    Type: Application
    Filed: January 7, 2014
    Publication date: August 7, 2014
    Inventors: Sean M. Kelly, Charles Robinson, Gervase Maxwell Christie, Uttam R. Doraswami