Patents by Inventor David Genders
David Genders 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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Patent number: 11949134Abstract: Designs of redox flow battery arrays and methods for balancing state of charge within the arrays are disclosed. Flow battery unit strings in the arrays which comprise strings of flow battery units (in which units share a common electrolyte pair) are balanced by measuring the states of charge of the common electrolyte pairs and appropriately regulating flow in one or more of the associated anolyte and catholyte circuits so as to balance the state-of charge in the flow battery unit strings. The apparatus required, i.e. state-of-charge measuring device, flow regulator, and controller, represents a substantial simplification to state of the art approaches.Type: GrantFiled: July 29, 2020Date of Patent: April 2, 2024Assignee: Invinity Energy Systems (Canada) CorporationInventors: Andrew Klassen, David Genders, Matthew Harper
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Publication number: 20240068113Abstract: The present disclosure relates to a method for treating an electromembrane process aqueous composition comprising sodium and/or potassium sulfate, said process comprising removing water from said electromembrane process aqueous composition under conditions suitable for substantially selectively precipitating sodium and/or potassium sulfate monohydrate.Type: ApplicationFiled: November 6, 2023Publication date: February 29, 2024Applicant: NEMASKA LITHIUM INC.Inventors: Jean-François MAGNAN, Guy BOURASSA, Nicolas LAROCHE, Gary PEARSE, Stephen Charles MACKIE, Mykolas GLADKOVAS, Peter SYMONS, J. David GENDERS, Geneviève CLAYTON, Pierre BOUCHARD
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Publication number: 20230416874Abstract: There are provided processes comprising submitting an aqueous composition comprising lithium sulphate and/or bisulfate to an electrolysis or an electrodialysis for converting at least a portion of said sulphate into lithium hydroxide. During electrolysis or electrodialysis, the aqueous composition is at least substantially maintained at a pH having a value of about 1 to about 4; and converting said lithium hydroxide into lithium carbonate.Type: ApplicationFiled: June 25, 2023Publication date: December 28, 2023Applicant: NEMASKA LITHIUM INC.Inventors: Guy BOURASSA, Gary PEARSE, Stephen Charles MACKIE, Mykolas GLADKOVAS, Peter SYMONS, J. David GENDERS, Jean-François MAGNAN, Geneviève CLAYTON
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Publication number: 20230227395Abstract: Efficient methods of producing L-threonic acid from L-xylonic acid are disclosed.Type: ApplicationFiled: August 27, 2021Publication date: July 20, 2023Inventors: Jonathan STAPLEY, David GENDERS
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Patent number: 11697861Abstract: There are provided processes comprising submitting an aqueous composition comprising lithium sulphate and/or bisulfate to an electrolysis or an electrodialysis for converting at least a portion of said sulphate into lithium hydroxide. During electrolysis or electrodialysis, the aqueous composition is at least substantially maintained at a pH having a value of about 1 to about 4; and converting said lithium hydroxide into lithium carbonate.Type: GrantFiled: November 9, 2018Date of Patent: July 11, 2023Assignee: NEMASKA LITHIUM INC.Inventors: Guy Bourassa, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders, Jean-François Magnan, Geneviève Clayton
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Publication number: 20230080642Abstract: The present disclosure relates to a method for treating an electromembrane process aqueous composition comprising sodium and/or potassium sulfate, said process comprising removing water from said electromembrane process aqueous composition under conditions suitable for substantially selectively precipitating sodium and/or potassium sulfate monohydrate.Type: ApplicationFiled: November 17, 2022Publication date: March 16, 2023Applicant: NEMASKA LITHIUM INC.Inventors: Jean-François MAGNAN, Guy BOURASSA, Nicolas LAROCHE, Gary PEARSE, Stephen Charles MACKIE, Mykolas GLADKOVAS, Peter SYMONS, J. David GENDERS, Geneviève CLAYTON, Pierre BOUCHARD
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Patent number: 11578029Abstract: Methods for the production of 2,4-dihydroxybutyrate (2,4-DHB) from erythrose and other four-carbon sugars are disclosed. The improved methods facilitate the production of 2,4-DHB that is a precursor for biorenewable and animal nutrition chemicals among others.Type: GrantFiled: December 30, 2020Date of Patent: February 14, 2023Assignee: DFI USA, LLCInventors: Jonathan Stapley, David Genders
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Patent number: 11519081Abstract: The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process.Type: GrantFiled: August 9, 2021Date of Patent: December 6, 2022Assignee: NEMASKA LITHIUM INC.Inventors: Jean-François Magnan, Guy Bourassa, Nicolas Laroche, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders, Geneviève Clayton, Pierre Bouchard
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Publication number: 20220285709Abstract: Designs of redox flow battery arrays and methods for balancing state of charge within the arrays are disclosed. Flow battery unit strings in the arrays which comprise strings of flow battery units (in which units share a common electrolyte pair) are balanced by measuring the states of charge of the common electrolyte pairs and appropriately regulating flow in one or more of the associated anolyte and catholyte circuits so as to balance the state-of charge in the flow battery unit strings. The apparatus required, i.e. state-of-charge measuring device, flow regulator, and controller, represents a substantial simplification to state of the art approaches.Type: ApplicationFiled: July 29, 2020Publication date: September 8, 2022Applicant: INVINITY ENERGY SYSTEMS (CANADA) CORPORATIONInventors: Andrew Klassen, David Genders, Matthew Harper
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Publication number: 20220235083Abstract: A method has now been found for the preparation of calcium, magnesium, and zinc salts of sugar acids, this being the object of the present invention, which is characterized in that the method may include providing a sugar and oxidizing the sugar to a sugar acid in the presence of a noble metal catalyst, oxygen, and a heterogeneous hydroxide source. Preferably the oxidation is carried out with a gold catalyst, and a heterogeneous source of magnesium, calcium, or zinc hydroxide. The oxidation can be performed in a batch or continuous manner.Type: ApplicationFiled: May 28, 2020Publication date: July 28, 2022Applicant: DFI USA, LLCInventors: Jonathan STAPLEY, David GENDERS
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Publication number: 20210363648Abstract: The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process.Type: ApplicationFiled: August 9, 2021Publication date: November 25, 2021Applicant: NEMASKA LITHIUM INC.Inventors: Jean-François MAGNAN, Guy BOURASSA, Nicolas LAROCHE, Gary PEARSE, Stephen Charles MACKIE, Mykolas GLADKOVAS, Peter SYMONS, J. David GENDERS, Geneviève CLAYTON, Pierre BOUCHARD
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Publication number: 20210348285Abstract: There are provided system for preparing lithium hydroxide from an aqueous composition comprising a lithium compound and use of the system thereof to prepare lithium hydroxide, the system comprising an electrochemical cell, a pH probe and at least one inlet for receiving acid or base for maintaining pH. For example, the lithium compound can be lithium sulphate and the aqueous composition can be at least substantially maintained at a pH having a value of about 2 to about 4.Type: ApplicationFiled: July 23, 2021Publication date: November 11, 2021Applicant: NEMASKA LITHIUM INC.Inventors: Jean-François MAGNAN, Guy BOURASSA, Gary PEARSE, Peter SYMONS, J. David GENDERS
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Patent number: 11085121Abstract: The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process.Type: GrantFiled: December 12, 2019Date of Patent: August 10, 2021Assignee: NEMASKA LITHIUM INC.Inventors: Jean-François Magnan, Guy Bourassa, Nicolas Laroche, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders, Geneviève Clayton, Pierre Bouchard
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Patent number: 11078583Abstract: There are provided processes for preparing lithium hydroxide that comprise submitting an aqueous composition comprising a lithium compound to an electrolysis or an electrodialysis under conditions suitable for converting at least a portion of the lithium compound into lithium hydroxide. For example, the lithium compound can be lithium sulphate and the aqueous composition can be at least substantially maintained at a pH having a value of about 1 to about 4.Type: GrantFiled: September 23, 2019Date of Patent: August 3, 2021Assignee: NEMASKA LITHIUM INC.Inventors: Jean-François Magnan, Guy Bourassa, Gary Pearse, Peter Symons, J. David Genders
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Publication number: 20210114964Abstract: Methods for the production of 2,4-dihydroxybutyrate (2,4-DHB) from erythrose and other four-carbon sugars are disclosed. The improved methods facilitate the production of 2,4-DHB that is a precursor for biorenewable and animal nutrition chemicals among others.Type: ApplicationFiled: December 30, 2020Publication date: April 22, 2021Inventors: Jonathan STAPLEY, David GENDERS
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Patent number: 10882812Abstract: Methods for the production of 2,4-dihydroxybutyrate (2,4-DHB) from erythrulose and other four-carbon sugars are disclosed. The improved methods facilitate the production of 2,4-DHB that is a precursor for biorenewable and animal nutrition chemicals among others.Type: GrantFiled: June 26, 2019Date of Patent: January 5, 2021Assignee: DFI USA, LLCInventors: Jonathan Stapley, David Genders
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Patent number: 10633748Abstract: There are provided methods for preparing lithium hydroxide. For example, such methods can comprise submitting an aqueous composition comprising a lithium compound to an electrolysis under conditions suitable for converting at least a portion of said lithium compound into lithium hydroxide. There are also provided methods for preparing lithium sulphate.Type: GrantFiled: August 3, 2018Date of Patent: April 28, 2020Assignee: NEMASKA LITHIUM INC.Inventors: Guy Bourassa, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders, Jean-François Magnan
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Publication number: 20200115807Abstract: The present disclosure relates to a method for extracting lithium from a lithium-containing material. For example, the method can comprise leaching a roasted lithium-containing material under conditions suitable to obtain an aqueous composition comprising a lithium compound such as lithium sulfate and/or lithium bisulfate. The aqueous composition comprising lithium sulfate and/or lithium bisulfate can optionally be used, for example, in a method for preparing lithium hydroxide comprising an electromembrane process. The roasted lithium-containing material can be prepared, for example by a method which uses an aqueous composition comprising optionally lithium sulfate and/or lithium bisulfate which can be obtained from a method for preparing lithium hydroxide comprising an electromembrane process such as a two-compartment monopolar or bipolar electrolysis process.Type: ApplicationFiled: December 12, 2019Publication date: April 16, 2020Applicant: NEMASKA LITHIUM INC.Inventors: Jean-François MAGNAN, Guy BOURASSA, Nicolas LAROCHE, Gary PEARSE, Stephen Charles MACKIE, Mykolas GLADKOVAS, Peter SYMONS, J. David GENDERS, Geneviève CLAYTON, Pierre BOUCHARD
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Patent number: 10597305Abstract: The disclosure relates to methods for preparing lithium hydroxide.Type: GrantFiled: August 26, 2016Date of Patent: March 24, 2020Assignee: NEMASKA LITHIUM INC.Inventors: Jean-François Magnan, Guy Bourassa, Nicolas Laroche, Gary Pearse, Stephen Charles Mackie, Mykolas Gladkovas, Peter Symons, J. David Genders, Geneviève Clayton, Pierre Bouchard, Bertin Ouellet
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Publication number: 20200087804Abstract: There are provided processes for preparing lithium hydroxide that comprise submitting an aqueous composition comprising a lithium compound to an electrolysis or an electrodialysis under conditions suitable for converting at least a portion of the lithium compound into lithium hydroxide. For example, the lithium compound can be lithium sulphate and the aqueous composition can be at least substantially maintained at a pH having a value of about 1 to about 4.Type: ApplicationFiled: September 23, 2019Publication date: March 19, 2020Applicant: NEMASKA LITHIUM INC.Inventors: Jean-François MAGNAN, Guy BOURASSA, Gary PEARSE, Peter SYMONS, J. David GENDERS