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).

  • Publication number: 20240035176
    Abstract: 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: Application
    Filed: October 2, 2023
    Publication date: February 1, 2024
    Applicant: 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
  • Patent number: 11814741
    Abstract: 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: Grant
    Filed: December 13, 2022
    Date of Patent: November 14, 2023
    Assignee: 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
  • Publication number: 20230305914
    Abstract: 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: Application
    Filed: May 31, 2023
    Publication date: September 28, 2023
    Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.
    Inventors: Andrew T. B. Stuart, Raynald G. LaChance, Edward D. B. Stuart, Jaideep S. Spal
  • Publication number: 20230295815
    Abstract: 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: Application
    Filed: July 15, 2021
    Publication date: September 21, 2023
    Applicant: 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
  • Patent number: 11746428
    Abstract: 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: Grant
    Filed: July 6, 2022
    Date of Patent: September 5, 2023
    Assignee: KEY DH IP INC./IP STRATEGIQUES DH, INC.
    Inventors: Andrew T. B. Stuart, Raynald G. Lachance, Edward D. B. Stuart, Jaideep S. Spal
  • Publication number: 20230243044
    Abstract: 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: Application
    Filed: April 10, 2023
    Publication date: August 3, 2023
    Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.
    Inventors: Andrew T. B. Stuart, Edward D. B. Stuart, Raynald G. LaChance, Erick S. Dykstra
  • Patent number: 11713511
    Abstract: 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: Grant
    Filed: October 26, 2021
    Date of Patent: August 1, 2023
    Assignee: KEY DH IP INC./IP STRATEGIQUES DH, INC.
    Inventors: Erick S. Dykstra, Raynald G. LaChance, Edward D. B. Stuart, Andrew T. B. Stuart
  • Publication number: 20230124442
    Abstract: 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: Application
    Filed: December 13, 2022
    Publication date: April 20, 2023
    Applicant: 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
  • Patent number: 11560634
    Abstract: 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: Grant
    Filed: December 7, 2021
    Date of Patent: January 24, 2023
    Assignee: 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
  • Publication number: 20220349071
    Abstract: 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: Application
    Filed: July 6, 2022
    Publication date: November 3, 2022
    Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.
    Inventors: ANDREW T. B. STUART, RAYNALD G. LACHANCE, EDWARD D. B. STUART, JAIDEEP S. SPAL
  • Patent number: 11401615
    Abstract: 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: Grant
    Filed: September 8, 2021
    Date of Patent: August 2, 2022
    Inventors: Andrew T. B. Stuart, Raynald G. Lachance, Edward D. B. Stuart, Jaideep S. Spal
  • Publication number: 20220220620
    Abstract: 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: Application
    Filed: October 26, 2021
    Publication date: July 14, 2022
    Applicant: KEY DH IP INC./IP STRATEGIQUES DH, INC.
    Inventors: Erick S. Dykstra, Raynald G. LaChance, Edward D. B. Stuart, Andrew T. B. Stuart
  • Publication number: 20220090276
    Abstract: 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: Application
    Filed: December 7, 2021
    Publication date: March 24, 2022
    Applicant: 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
  • Publication number: 20220074060
    Abstract: 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: Application
    Filed: September 8, 2021
    Publication date: March 10, 2022
    Applicant: KEY DH IP INC./IP STRATÉGIQUES DH, INC.
    Inventors: ANDREW T. B. STUART, RAYNALD G. LACHANCE, EDWARD D. B. STUART, JAIDEEP S. SPAL
  • Publication number: 20220018030
    Abstract: 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: Application
    Filed: August 14, 2020
    Publication date: January 20, 2022
    Inventors: ANDREW T.B. STUART, RAYNALD G. LACHANCE, EDWARD D.B. STUART, SAMANTHA E.L. STUART, JAIDEEP S. SPAL
  • Patent number: 11225724
    Abstract: 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: Grant
    Filed: August 14, 2020
    Date of Patent: January 18, 2022
    Assignee: 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
  • Patent number: 7914765
    Abstract: 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: Grant
    Filed: January 8, 2008
    Date of Patent: March 29, 2011
    Assignee: Available Energy Corporation
    Inventors: Leslie C. McLean, Matthew James Fairlie, Andrew T. B. Stuart
  • Publication number: 20110027165
    Abstract: 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: Application
    Filed: July 29, 2009
    Publication date: February 3, 2011
    Inventors: Andrew T. B. Stuart, Alistair I. Miller, Graeme Norval
  • Publication number: 20110027166
    Abstract: 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: Application
    Filed: July 29, 2009
    Publication date: February 3, 2011
    Inventors: Andrew T.B. Stuart, Alistair I. Miller, Graeme Norval
  • Patent number: 7565224
    Abstract: 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: Grant
    Filed: December 22, 2003
    Date of Patent: July 21, 2009
    Assignee: Stuart Energy Systems Corp.
    Inventors: Matthew J. Fairlie, William J. Stewart, Andrew T. B. Stuart, Steven J. Thorpe, Charlie Dong