Patents by Inventor Christian Junaedi
Christian Junaedi 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).
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Publication number: 20240055640Abstract: This invention pertains to a reinforced porous metal substrate that finds utility in a backbone-structured metal-supported electrochemical cell and to methods of fabricating the reinforced porous metal substrate. In another aspect, this invention pertains to a backbone-structured metal-supported electrochemical cell repeat unit constructed by weld sealing or diffusion bonding the reinforced porous metal substrate to a metal frame. In another aspect, this invention pertains to an electrochemical cell and stack.Type: ApplicationFiled: March 4, 2022Publication date: February 15, 2024Inventors: Toshio Suzuki, Timothy LaBreche, Christian Junaedi, Subir Roychoudhury
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Publication number: 20240052506Abstract: A metal substrate for use in a metal-supported electrochemical cell is disclosed, the substrate containing a porous metal support comprising a first metal, such as a ferritic alloy, having applied on one side thereon a barrier layer comprising a bimodal distribution of micron-sized grains of a second metal, for example, nickel, and submicron-sized grains of a metal oxide, for example, gadolinium-doped ceria. A method of fabricating the metal substrate is disclosed. A metal-supported electrode and a metal-supported electrochemical cell are fabricated with the metal substrate.Type: ApplicationFiled: March 4, 2022Publication date: February 15, 2024Inventors: Toshio Suzuki, Christian Junaedi, Subir Roychoudhury
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Patent number: 11742498Abstract: This invention pertains to methods for controlling thermal aspects during operation of a solid oxide fuel cell (SOFC) system, including controlling target cathode and anode inlet stream temperatures and differential temperatures defined by the anode and cathode inlet and outlet streams. In one aspect, thermal management is achieved by controlling a combustion stream temperature and by employing one heat exchanger having two cold side pathways. In another aspect, thermal management is achieved by controlling a temperature of a combustion stream distributed through a cathode feed heat exchanger and an anode feed heat exchanger, optionally with bypassing a portion of the cathode air stream around the cathode feed heat exchanger. In another aspect, thermal management is achieved by employing a cathode feed heat exchanger to heat a cathode air stream and by employing an equalizer heat exchanger to equilibrate temperatures of the resulting heated cathode air stream and an anode fuel stream.Type: GrantFiled: June 5, 2020Date of Patent: August 29, 2023Assignee: PRECISION COMBUSTION, INC.Inventors: Saurabh Vilekar, Christian Junaedi, Eric Edward Allocco, Christopher Howard
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Patent number: 11691103Abstract: A first process and sorbent for removing ammonia from a gaseous environment, the sorbent comprised of graphene oxide having supported thereon at least one compound selected from metal salts, metal oxides and acids, each of which is capable of adsorbing ammonia. A second process and sorbent system for removing ammonia and a volatile organic compound from a gaseous environment; the sorbent system comprised of two graphene-based materials: (a) the aforementioned graphene oxide, and (b) a nitrogen and oxygen-functionalized graphene. The sorbents are regenerable under a pressure gradient with little or no application of heat. The processes are operable through multiple adsorption-desorption cycles and are applicable to purifying and revitalizing air contaminated with ammonia and organic compounds as may be found in spacesuits, aerospace cabins, underwater vehicles, and other confined-entry environments.Type: GrantFiled: March 25, 2021Date of Patent: July 4, 2023Assignee: Precision Combustion, Inc.Inventors: Christian Junaedi, Codruta Maria Zoican-Loebick, Kyle Hawley
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Publication number: 20230051172Abstract: A clad porous metal substrate for use in a metal-supported electrochemical cell, wherein a metal support layer of defined porosity is clad on top and bottom sides with a layer containing a metal and/or a metal oxide. A metal-supported electrochemical half-cell and a metal-supported electrochemical cell are also described.Type: ApplicationFiled: August 17, 2022Publication date: February 16, 2023Inventors: Toshio Suzuki, Timothy LaBreche, Christian Junaedi, Subir Roychoudhury, Hongpeng He
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Patent number: 11581553Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.Type: GrantFiled: March 5, 2021Date of Patent: February 14, 2023Assignee: Precision Combustion, Inc.Inventors: Christian Junaedi, Subir Roychoudhury, Kyle Hawley, Saurabh Vilekar
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Patent number: 11454602Abstract: A portable, compact, real-time and accurate sensor and method for deriving a physicochemical property of a liquid fuel, such as cetane number, carbon content, carbon/hydrogen (C/H) atomic ratio, or heating value (net heat of combustion). The sensor comprises a constant-volume ignition chamber equipped for measuring ignition delay and magnitude of a peak rise in pressure or temperature following dispensation of a liquid fuel into the chamber. The sensor utilizes air at atmospheric pressure and microliter quantities of fuel. The sensor can be implemented in real-time refinery operations for blending diesel fuels that meet government mandated cetane number standards as well as in applications for standardizing jet, biodiesel, and synthetic fuels, which presently are not classified by any physicochemical property.Type: GrantFiled: April 22, 2020Date of Patent: September 27, 2022Assignee: PRECISION COMBUSTION, INC.Inventors: Christian Junaedi, Subir Roychoudhury
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Patent number: 11165073Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an in oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.Type: GrantFiled: October 16, 2017Date of Patent: November 2, 2021Assignee: Precision Combustion, Inc.Inventors: Christian Junaedi, Subir Roychoudhury, Saurabh Vilekar, Kyle Hawley
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Publication number: 20210236983Abstract: A first process and sorbent for removing ammonia from a gaseous environment, the sorbent comprised of graphene oxide having supported thereon at least one compound selected from metal salts, metal oxides and acids, each of which is capable of adsorbing ammonia. A second process and sorbent system for removing ammonia and a volatile organic compound from a gaseous environment; the sorbent system comprised of two graphene-based materials: (a) the aforementioned graphene oxide, and (b) a nitrogen and oxygen-functionalized graphene. The sorbents are regenerable under a pressure gradient with little or no application of heat. The processes are operable through multiple adsorption-desorption cycles and are applicable to purifying and revitalizing air contaminated with ammonia and organic compounds as may be found in spacesuits, aerospace cabins, underwater vehicles, and other confined-entry environments.Type: ApplicationFiled: March 25, 2021Publication date: August 5, 2021Inventors: Christian Junaedi, Codruta Maria Zoican-Loebick, Kyle Hawley
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Publication number: 20210202964Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.Type: ApplicationFiled: March 5, 2021Publication date: July 1, 2021Inventors: Christian Junaedi, Subir Roychoudhury, Kyle Hawley, Saurabh Vilekar
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Patent number: 11011763Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.Type: GrantFiled: October 16, 2017Date of Patent: May 18, 2021Assignee: PRECISON COMBUSTION, INC.Inventors: Christian Junaedi, Subir Roychoudhury, Kyle Hawley, Saurabh Vilekar
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Patent number: 10994241Abstract: A first process and sorbent for removing ammonia from a gaseous environment, the sorbent comprised of graphene oxide having supported thereon at least one compound selected from metal salts, metal oxides and acids, each of which is capable of adsorbing ammonia. A second process and sorbent system for removing ammonia and a volatile organic compound from a gaseous environment; the sorbent system comprised of two graphene-based materials: (a) the aforementioned graphene oxide, and (b) a nitrogen and oxygen-functionalized graphene. The sorbents are regenerable under a pressure gradient with little or no application of heat. The processes are operable through multiple adsorption-desorption cycles and are applicable to purifying and revitalizing air contaminated with ammonia and organic compounds as may be found in spacesuits, aerospace cabins, underwater vehicles, and other confined-entry environments.Type: GrantFiled: June 14, 2018Date of Patent: May 4, 2021Assignee: Precision Combustion, Inc.Inventors: Christian Junaedi, Codruta Maria Zoican-Loebick, Kyle Hawley
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Patent number: 10978722Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.Type: GrantFiled: October 16, 2017Date of Patent: April 13, 2021Assignee: PRECISION COMBUSTION, INC.Inventors: Christian Junaedi, Subir Roychoudhury, Kyle Hawley, Saurabh Vilekar
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Publication number: 20200292479Abstract: A portable, compact, real-time and accurate sensor and method for deriving a physicochemical property of a liquid fuel, such as cetane number, carbon content, carbon/hydrogen (C/H) atomic ratio, or heating value (net heat of combustion). The sensor comprises a constant-volume ignition chamber equipped for measuring ignition delay and magnitude of a peak rise in pressure or temperature following dispensation of a liquid fuel into the chamber. The sensor utilizes air at atmospheric pressure and microliter quantities of fuel. The sensor can be implemented in real-time refinery operations for blending diesel fuels that meet government mandated cetane number standards as well as in applications for standardizing jet, biodiesel, and synthetic fuels, which presently are not classified by any physicochemical property.Type: ApplicationFiled: April 22, 2020Publication date: September 17, 2020Inventors: Christian Junaedi, Subir Roychoudhury
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Patent number: 10697915Abstract: A portable, compact, real-time and accurate sensor and method for deriving a physicochemical property of a liquid fuel, such as cetane number, carbon content, carbon/hydrogen (C/H) atomic ratio, or heating value (net heat of combustion). The sensor comprises a constant-volume ignition chamber equipped for measuring ignition delay and magnitude of a peak rise in pressure or temperature following dispensation of a liquid fuel into the chamber. The sensor utilizes air at atmospheric pressure and microliter quantities of fuel. The sensor can be implemented in real-time refinery operations for blending diesel fuels that meet government mandated cetane number standards as well as in applications for standardizing jet, biodiesel, and synthetic fuels, which presently are not classified by any physicochemical property.Type: GrantFiled: May 26, 2017Date of Patent: June 30, 2020Assignee: PRECISION COMBUSTION, INC.Inventors: Christian Junaedi, Subir Roychoudhury
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Publication number: 20200020962Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.Type: ApplicationFiled: October 16, 2017Publication date: January 16, 2020Inventors: Christian Junaedi, Subir Roychoudhury, Kyle Hawley, Saurabh Vilekar
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Patent number: 10411281Abstract: This invention pertains to a thermally-integrated solid oxide fuel cell system, providing for a solid oxide fuel cell stack disposed within a stack hotbox; a heat extractor disposed within the stack hotbox in thermal communication with the fuel cell stack and circumscribed around a full or partial perimeter of the fuel cell stack; a fuel reformer-combustor module disposed within the stack hotbox in thermal communication with the stack and disposed around a full or partial perimeter of the heat extractor; and a manifold fluidly connecting an outlet of the heat extractor to an inlet of a reformer section of the fuel reformer-combustor module.Type: GrantFiled: February 12, 2018Date of Patent: September 10, 2019Assignee: PRECISION COMBUSTION, INC.Inventors: Saurabh Vilekar, Subir Roychoudhury, Christian Junaedi, Richard Mastanduno
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Publication number: 20190229352Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an in oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.Type: ApplicationFiled: October 16, 2017Publication date: July 25, 2019Inventors: Christian Junaedi, Subir Roychoudhury, Saurabh Vilekar, Kyle Hawley
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Publication number: 20190226101Abstract: An individual solid oxide cell (SOC) constructed of a sandwich configuration including in the following order: an oxygen electrode, a solid oxide electrolyte, a fuel electrode, a fuel manifold, and at least one layer of mesh. In one embodiment, the mesh supports a reforming catalyst resulting in a solid oxide fuel cell (SOFC) having a reformer embedded therein. The reformer-modified SOFC functions internally to steam reform or partially oxidize a gaseous hydrocarbon, e.g. methane, to a gaseous reformate of hydrogen and carbon monoxide, which is converted in the SOC to water, carbon dioxide, or a mixture thereof, and an electrical current. In another embodiment, an electrical insulator is disposed between the fuel manifold and the mesh resulting in a solid oxide electrolysis cell (SOEC), which functions to electrolyze water and/or carbon dioxide.Type: ApplicationFiled: October 16, 2017Publication date: July 25, 2019Applicant: PRECISION COMBUSTION , INC.Inventors: Christian Junaedi, Subir Roychoudhury, Kyle Hawley, Saurabh Vilekar
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Patent number: 9446365Abstract: A Sabatier process involving contacting carbon dioxide and hydrogen in a first reaction zone with a first catalyst bed at a temperature greater than a first designated temperature; feeding the effluent from the first reaction zone into a second reaction zone, and contacting the effluent with a second catalyst bed at a temperature equal to or less than a second designated temperature, so as to produce a product stream comprising water and methane. The first and second catalyst beds each individually comprise an ultra-short-channel-length metal substrate. An apparatus for controlling temperature in an exothermic reaction, such as the Sabatier reaction, is disclosed.Type: GrantFiled: February 28, 2014Date of Patent: September 20, 2016Assignee: PRECISION COMBUSTION, INC.Inventors: Christian Junaedi, Kyle Hawley, Subir Roychoudhury