Patents by Inventor Andrew T. B. Stuart
Andrew T. B. Stuart 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: 20240035176Abstract: Disclosed is an integrally combined electrical current carrier, circulation chamber and frame (CCF) formed as a single or double part (CCF) for use in unipolar electrochemical devices. The CCF is structured to define an internal circulation chamber for circulation of electrolyte, products, and reactants as well as apertures which form flow passageways when the filter press device is assembled. Affixed on opposed surfaces of the CCFs are electrically conductive planar electroactive structures which are in electrical contact with the CCF. The circulation chamber is formed by the depth of the CCF itself between opposing electroactive structures. Multiple CCFs are assembled and compressed together to form the filter press electrolyser apparatus. When power is applied to the CCFs and electroactive structures, the reactants, once they flow into the circulation chamber with the electrolyte, undergo redox reactions to produce products that are collected and exit the electrolyser in upper flow pathways.Type: ApplicationFiled: October 2, 2023Publication date: February 1, 2024Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Andrew T. B. Stuart, Raynald G. LaChance, Edward D. B. Stuart, Samantha E. L. Stuart, Jaideep S. Spal
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Patent number: 11814741Abstract: Disclosed is an integrally combined electrical current carrier, circulation chamber and frame (CCF) formed as a single or double part (CCF) for use in unipolar electrochemical devices, such as a filter press electrolyser apparatus. The CCF is structured to define an internal circulation chamber for circulation of electrolyte, products, and reactants as well as apertures which form flow passageways when the filter press device is assembled. Affixed on opposed surfaces of the CCFs are electrically conductive planar electroactive structures which are in electrical contact with the CCF. The circulation chamber is formed by the depth of the CCF itself between opposing electroactive structures. Multiple CCFs are assembled and compressed together to form the filter press electrolyser apparatus. The flow passageway apertures within the assembled filter press electrolyser are aligned to form flow pathways, located above and below the circulation chambers.Type: GrantFiled: December 13, 2022Date of Patent: November 14, 2023Assignee: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Andrew T. B. Stuart, Raynald G. Lachance, Edward D. B. Stuart, Samantha E. L. Stuart, Jaideep S. Spal
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Publication number: 20230305914Abstract: Disclosed is an end assembly for use in a unipolar filter press electrolyser, where the unipolar filter press electrolyser has a filter press stack. The end assembly of the unipolar filter press electrolyser includes an end plate component having two apertures, the two apertures being alignable with channels formed in the filter press stack. The two apertures include a first aperture configured to receive a stream of liquid electrolyte and gases from the filter press stack, and a second aperture configured to receive a stream of recirculated liquid electrolyte. In addition, the end assembly includes an end clamp configured to apply a clamping force on the end plate component to securely retain the filter press stack. The end clamp includes one gas offtake port to extract gases from the stream of liquid electrolyte and gases from the first aperture and discharge the gases out of the unipolar filter press electrolyser.Type: ApplicationFiled: May 31, 2023Publication date: September 28, 2023Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Andrew T. B. Stuart, Raynald G. LaChance, Edward D. B. Stuart, Jaideep S. Spal
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Publication number: 20230295815Abstract: Disclosed is a combined electrical current carrier, circulation chamber and frame (CCF) formed as a single or double part (CCF) for use in unipolar electrochemical devices, such as a filter press electrolyser apparatus. The CCF is structured to define an internal circulation chamber for circulation of electrolyte, products, and reactants as well as apertures which form flow passageways when the filter press device is assembled. Affixed on opposed surfaces of the CCFs are electrically conductive planar electroactive structures which are in electrical contact with the CCF. The circulation chamber is formed by the depth of the CCF itself between opposing electroactive structures. Multiple CCFs are assembled and compressed together to form the filter press electrolyser apparatus. The flow passageway apertures within the assembled filter press electrolyser are aligned to form flow pathways, located above and below the circulation chambers. Reactants and electrolyte are input along the bottom flow pathways.Type: ApplicationFiled: July 15, 2021Publication date: September 21, 2023Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Andrew T. B. Stuart, Samantha E. L. Stuart, Edward D. B. Stuart, Raynald G. LaChance, Jaideep S. Spal
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Patent number: 11746428Abstract: Disclosed is an end assembly for use in a unipolar filter press electrolyser, where the unipolar filter press electrolyser has a filter press stack. The end assembly of the unipolar filter press electrolyser includes an end plate component having two apertures, the two apertures being alignable with channels formed in the filter press stack. The two apertures include a first aperture configured to receive a stream of liquid electrolyte and gases from the filter press stack, and a second aperture configured to receive a stream of recirculated liquid electrolyte. In addition, the end assembly includes an end clamp configured to apply a clamping force on the end plate component to securely retain the filter press stack. The end clamp includes one gas offtake port to extract gases from the stream of liquid electrolyte and gases from the first aperture and discharge the gases out of the unipolar filter press electrolyser.Type: GrantFiled: July 6, 2022Date of Patent: September 5, 2023Assignee: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Andrew T. B. Stuart, Raynald G. Lachance, Edward D. B. Stuart, Jaideep S. Spal
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Publication number: 20230243044Abstract: The present disclosure provides a high-power unipolar water electrolysis plant including a rectifier, a first U-bank, and a second U-bank electrically connected in series to the rectifier and to the first U-bank. Each U-bank is formed by a pair of adjacent, longitudinal cell arrays electrically connected to each other. The cell arrays are arranged in a spaced apart, side-by-side arrangement with a service corridor defined therebetween to allow sectional maintenance to be performed on each cell array. Each cell array has a plurality of unipolar water electrolyser cells. Each U-bank has input conduits for delivering water and cooling water to each cell array, output conduits for carrying hydrogen gas, oxygen gas and cooling water away from each cell array. The high-power unipolar water electrolysis plant includes a first jumper and a second jumper to isolate the U-bank, an electrical bypass busbar extension and a third jumper to bypass the U-bank.Type: ApplicationFiled: April 10, 2023Publication date: August 3, 2023Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Andrew T. B. Stuart, Edward D. B. Stuart, Raynald G. LaChance, Erick S. Dykstra
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Patent number: 11713511Abstract: The present disclosure provides a high-power unipolar water electrolysis plant including a rectifier, a first U-bank, and a second U-bank electrically connected in series to the rectifier and to the first U-bank. Each U-bank is formed by a pair of adjacent, longitudinal cell arrays electrically connected to each other. The cell arrays are arranged in a spaced apart, side-by-side arrangement with a service corridor defined therebetween to allow sectional maintenance to be performed on each cell array. Each cell array has a plurality of unipolar water electrolyser cells. Each U-bank has input conduits for delivering water and cooling water to each cell array, output conduits for carrying hydrogen gas, oxygen gas and cooling water away from each cell array. The high-power unipolar water electrolysis plant includes a first jumper and a second jumper to isolate the U-bank, an electrical bypass busbar extension and a third jumper to bypass the U-bank.Type: GrantFiled: October 26, 2021Date of Patent: August 1, 2023Assignee: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Erick S. Dykstra, Raynald G. LaChance, Edward D. B. Stuart, Andrew T. B. Stuart
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Publication number: 20230124442Abstract: Disclosed is an integrally combined electrical current carrier, circulation chamber and frame (CCF) formed as a single or double part (CCF) for use in unipolar electrochemical devices, such as a filter press electrolyser apparatus. The CCF is structured to define an internal circulation chamber for circulation of electrolyte, products, and reactants as well as apertures which form flow passageways when the filter press device is assembled. Affixed on opposed surfaces of the CCFs are electrically conductive planar electroactive structures which are in electrical contact with the CCF. The circulation chamber is formed by the depth of the CCF itself between opposing electroactive structures. Multiple CCFs are assembled and compressed together to form the filter press electrolyser apparatus. The flow passageway apertures within the assembled filter press electrolyser are aligned to form flow pathways, located above and below the circulation chambers.Type: ApplicationFiled: December 13, 2022Publication date: April 20, 2023Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: ANDREW T.B. STUART, RAYNALD G. LACHANCE, EDWARD D.B. STUART, SAMANTHA E.L. STUART, JAIDEEP S. SPAL
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Patent number: 11560634Abstract: Disclosed is an integrally combined electrical current carrier, circulation chamber and frame (CCF) formed as a single or double part (CCF) for use in unipolar electrochemical devices, such as a filter press electrolyser apparatus. The CCF is structured to define an internal circulation chamber for circulation of electrolyte, products, and reactants as well as apertures which form flow passageways when the filter press device is assembled. Affixed on opposed surfaces of the CCFs are electrically conductive planar electroactive structures which are in electrical contact with the CCF. The circulation chamber is formed by the depth of the CCF itself between opposing electroactive structures. Multiple CCFs are assembled and compressed together to form the filter press electrolyser apparatus. The flow passageway apertures within the assembled filter press electrolyser are aligned to form flow pathways, located above and below the circulation chambers.Type: GrantFiled: December 7, 2021Date of Patent: January 24, 2023Assignee: KEY DH IP INC./IP STRATÉGIQUES DH, INC.Inventors: Andrew T.B. Stuart, Raynald G. Lachance, Edward D.B. Stuart, Samantha E.L. Stuart, Jaideep S. Spal
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Publication number: 20220349071Abstract: Disclosed is an end assembly for use in a unipolar filter press electrolyser, where the unipolar filter press electrolyser has a filter press stack. The end assembly of the unipolar filter press electrolyser includes an end plate component having two apertures, the two apertures being alignable with channels formed in the filter press stack. The two apertures include a first aperture configured to receive a stream of liquid electrolyte and gases from the filter press stack, and a second aperture configured to receive a stream of recirculated liquid electrolyte. In addition, the end assembly includes an end clamp configured to apply a clamping force on the end plate component to securely retain the filter press stack. The end clamp includes one gas offtake port to extract gases from the stream of liquid electrolyte and gases from the first aperture and discharge the gases out of the unipolar filter press electrolyser.Type: ApplicationFiled: July 6, 2022Publication date: November 3, 2022Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: ANDREW T. B. STUART, RAYNALD G. LACHANCE, EDWARD D. B. STUART, JAIDEEP S. SPAL
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Patent number: 11401615Abstract: Disclosed is an end assembly for use in a unipolar filter press electrolyser, where the unipolar filter press electrolyser has a filter press stack. The end assembly of the unipolar filter press electrolyser includes an end plate component having two apertures, the two apertures being alignable with channels formed in the filter press stack. The two apertures include a first aperture configured to receive a stream of liquid electrolyte and gases from the filter press stack, and a second aperture configured to receive a stream of recirculated liquid electrolyte. In addition, the end assembly includes an end clamp configured to apply a clamping force on the end plate component to securely retain the filter press stack. The end clamp includes one gas offtake port to extract gases from the stream of liquid electrolyte and gases from the first aperture and discharge the gases out of the unipolar filter press electrolyser.Type: GrantFiled: September 8, 2021Date of Patent: August 2, 2022Inventors: Andrew T. B. Stuart, Raynald G. Lachance, Edward D. B. Stuart, Jaideep S. Spal
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Publication number: 20220220620Abstract: The present disclosure provides a high-power unipolar water electrolysis plant including a rectifier, a first U-bank, and a second U-bank electrically connected in series to the rectifier and to the first U-bank. Each U-bank is formed by a pair of adjacent, longitudinal cell arrays electrically connected to each other. The cell arrays are arranged in a spaced apart, side-by-side arrangement with a service corridor defined therebetween to allow sectional maintenance to be performed on each cell array. Each cell array has a plurality of unipolar water electrolyser cells. Each U-bank has input conduits for delivering water and cooling water to each cell array, output conduits for carrying hydrogen gas, oxygen gas and cooling water away from each cell array. The high-power unipolar water electrolysis plant includes a first jumper and a second jumper to isolate the U-bank, an electrical bypass busbar extension and a third jumper to bypass the U-bank.Type: ApplicationFiled: October 26, 2021Publication date: July 14, 2022Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Erick S. Dykstra, Raynald G. LaChance, Edward D. B. Stuart, Andrew T. B. Stuart
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Publication number: 20220090276Abstract: Disclosed is an integrally combined electrical current carrier, circulation chamber and frame (CCF) formed as a single or double part (CCF) for use in unipolar electrochemical devices, such as a filter press electrolyser apparatus. The CCF is structured to define an internal circulation chamber for circulation of electrolyte, products, and reactants as well as apertures which form flow passageways when the filter press device is assembled. Affixed on opposed surfaces of the CCFs are electrically conductive planar electroactive structures which are in electrical contact with the CCF. The circulation chamber is formed by the depth of the CCF itself between opposing electroactive structures. Multiple CCFs are assembled and compressed together to form the filter press electrolyser apparatus. The flow passageway apertures within the assembled filter press electrolyser are aligned to form flow pathways, located above and below the circulation chambers.Type: ApplicationFiled: December 7, 2021Publication date: March 24, 2022Applicant: KEY DH IP INC./IP STRATÉGIQUES DH, INC.Inventors: ANDREW T.B. STUART, RAYNALD G. LACHANCE, EDWARD D.B. STUART, SAMANTHA E.L. STUART, JAIDEEP S. SPAL
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Publication number: 20220074060Abstract: Disclosed is an end assembly for use in a unipolar filter press electrolyser, where the unipolar filter press electrolyser has a filter press stack. The end assembly of the unipolar filter press electrolyser includes an end plate component having two apertures, the two apertures being alignable with channels formed in the filter press stack. The two apertures include a first aperture configured to receive a stream of liquid electrolyte and gases from the filter press stack, and a second aperture configured to receive a stream of recirculated liquid electrolyte. In addition, the end assembly includes an end clamp configured to apply a clamping force on the end plate component to securely retain the filter press stack. The end clamp includes one gas offtake port to extract gases from the stream of liquid electrolyte and gases from the first aperture and discharge the gases out of the unipolar filter press electrolyser.Type: ApplicationFiled: September 8, 2021Publication date: March 10, 2022Applicant: KEY DH IP INC./IP STRATÉGIQUES DH, INC.Inventors: ANDREW T. B. STUART, RAYNALD G. LACHANCE, EDWARD D. B. STUART, JAIDEEP S. SPAL
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Publication number: 20220018030Abstract: Disclosed is an integrally combined electrical current carrier, circulation chamber and frame (CCF) formed as a single or double part (CCF) for use in unipolar electrochemical devices, such as a filter press electrolyser apparatus. The CCF is structured to define an internal circulation chamber for circulation of electrolyte, products, and reactants as well as apertures which form flow passageways when the filter press device is assembled. Affixed on opposed surfaces of the CCFs are electrically conductive planar electroactive structures which are in electrical contact with the CCF. The circulation chamber is formed by the depth of the CCF itself between opposing electroactive structures. Multiple CCFs are assembled and compressed together to form the filter press electrolyser apparatus. The flow passageway apertures within the assembled filter press electrolyser are aligned to form flow pathways, located above and below the circulation chambers.Type: ApplicationFiled: August 14, 2020Publication date: January 20, 2022Inventors: ANDREW T.B. STUART, RAYNALD G. LACHANCE, EDWARD D.B. STUART, SAMANTHA E.L. STUART, JAIDEEP S. SPAL
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Patent number: 11225724Abstract: Disclosed is an integrally combined electrical current carrier, circulation chamber and frame (CCF) formed as a single or double part (CCF) for use in unipolar electrochemical devices, such as a filter press electrolyser apparatus. The CCF is structured to define an internal circulation chamber for circulation of electrolyte, products, and reactants as well as apertures which form flow passageways when the filter press device is assembled. Affixed on opposed surfaces of the CCFs are electrically conductive planar electroactive structures which are in electrical contact with the CCF. The circulation chamber is formed by the depth of the CCF itself between opposing electroactive structures. Multiple CCFs are assembled and compressed together to form the filter press electrolyser apparatus. The flow passageway apertures within the assembled filter press electrolyser are aligned to form flow pathways, located above and below the circulation chambers.Type: GrantFiled: August 14, 2020Date of Patent: January 18, 2022Assignee: KEY DH IP INC./IP STRATEGIQUES DH, INC.Inventors: Andrew T. B. Stuart, Raynald G. Lachance, Edward D. B. Stuart, Samantha E. L. Stuart, Jaideep S. Spal
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Patent number: 7914765Abstract: The present invention provides a reactor and gasification process for the continuous controlled production of hydrogen (H2) and a by-product synthesis gas (mixture of CO+H2+CO2), such a process called a hydrogen priority poly-generation process (HPPP). The reactor uses a circulating molten iron process, which is capable of gasifying a variety of carbonaceous materials including low rank coals and biomass. The process employs an iron steam oxidation-reduction cycle in a multi-chamber reactor including a multi-vessel reactor system, where in one compartment or vessel hydrogen is produced by steam oxidation of molten iron; and in a second compartment or vessel the iron is regenerated by carbon reduction of molten iron oxide thereby producing a by-product synthesis gas (CO+H2+CO2), and excess heat which can be used to produce steam, and in a third step the iron is purified before being returned to the steam oxidation step in the process.Type: GrantFiled: January 8, 2008Date of Patent: March 29, 2011Assignee: Available Energy CorporationInventors: Leslie C. McLean, Matthew James Fairlie, Andrew T. B. Stuart
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Publication number: 20110027165Abstract: The present invention provides a process whereby pre-enrichment of water streams using a hydrogen source and a catalytic isotope exchange method at one or more remote sites to supply water with augmented deuterium concentration to a central heavy water. This central heavy water plant could be a Combined Electrolysis and Catalytic Exchange (“CECE”) heavy water production plant or a Girdler Sulfide heavy water plant. The deuterium content of water at the remote sites is increased and provides water stream(s) with augmented deuterium concentration to feed to the central heavy water production plant. This could be a first stage of the central CECE deuterium enrichment plant, increasing its capacity for heavy water production approximately in the ratio of its enrichment above natural deuterium concentrations. By relatively simple utilization of available deuterium enrichment capacity at the remote sites, advantages are achieved from a larger scale of heavy water production at the central production plant.Type: ApplicationFiled: July 29, 2009Publication date: February 3, 2011Inventors: Andrew T. B. Stuart, Alistair I. Miller, Graeme Norval
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Publication number: 20110027166Abstract: The present invention provides a process whereby pre-enrichment of water streams using a hydrogen source and a catalytic isotope exchange method at one or more remote sites to supply water with augmented deuterium concentration to a central heavy water. This central heavy water plant could be a Combined Electrolysis and Catalytic Exchange (“CECE”) heavy water production plant or a Girdler Sulfide heavy water plant. The deuterium content of water at the remote sites is increased and provides water stream(s) with augmented deuterium concentration to feed to the central heavy water production plant. This could be a first stage of the central CECE deuterium enrichment plant, increasing its capacity for heavy water production approximately in the ratio of its enrichment above natural deuterium concentrations. By relatively simple utilization of available deuterium enrichment capacity at the remote sites, advantages are achieved from a larger scale of heavy water production at the central production plant.Type: ApplicationFiled: July 29, 2009Publication date: February 3, 2011Inventors: Andrew T.B. Stuart, Alistair I. Miller, Graeme Norval
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Patent number: 7565224Abstract: A hydrogen fuel supply system includes a hydrogen generator for generating hydrogen from an energy source at an outlet pressure. An outlet conduit feeds the hydrogen to a user. A controller controls the hydrogen generator to produce hydrogen at the outlet pressure. An input interface receives user demand data and activates the controller in accordance with the user demand data.Type: GrantFiled: December 22, 2003Date of Patent: July 21, 2009Assignee: Stuart Energy Systems Corp.Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong