Patents by Inventor J. David Genders
J. 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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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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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: 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: 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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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
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Patent number: 10544512Abstract: 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: February 24, 2015Date of Patent: January 28, 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
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Publication number: 20190345582Abstract: 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: November 9, 2018Publication date: November 14, 2019Inventors: 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: 20190136392Abstract: 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: ApplicationFiled: August 3, 2018Publication date: May 9, 2019Inventors: Guy BOURASSA, Gary PEARSE, Stephen Charles MACKIE, Mykolas GLADKOVAS, Peter SYMONS, J. David GENDERS, Jean-François MAGNAN
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Patent number: 10066305Abstract: 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: June 6, 2017Date of Patent: September 4, 2018Assignee: 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: 20180244531Abstract: The disclosure relates to methods for preparing lithium hydroxide.Type: ApplicationFiled: August 26, 2016Publication date: August 30, 2018Inventors: 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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Patent number: 10016726Abstract: A method of recovering purified partly-hydrolyzed cellulose particles from a composition comprising agglomerated partly-hydrolyzed cellulose particles and an acid, using electrodialysis. The invention addresses the problem of reducing the acid to very low levels while avoiding the high capital and operating costs, high water usage and large filtration surface area or dilution time requirements of the prior art processes. Following dilution, concentration by centrifuging or settling, and/or dialysis of the composition, the composition is treated in an electrodialysis cell to remove ions, such as free sulfate from sulfuric acid. The method may include having an anion exchange resin in the feed compartment of the electrodialysis cell, adding a base to the receiving solution in the electrodialysis cell, and a second step of electrodialysis of the purified partly-hydrolyzed cellulose particles.Type: GrantFiled: February 28, 2014Date of Patent: July 10, 2018Assignee: NORAM Engineering and Constructors Ltd.Inventors: James M. Lockhart, Peter G. Symons, J. David Genders
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Patent number: 9957620Abstract: Methods for simultaneously decarboxylating carbohydrate acids and reducing carbohydrate aldehydes in a divided electrochemical cell having a central compartment separate from the anode and cathode are disclosed using a cation membrane and a bipolar membrane. The improved methods are more cost-efficient and environmentally friendly.Type: GrantFiled: August 14, 2014Date of Patent: May 1, 2018Assignee: DFI USA, LLCInventors: J. David Genders, Jonathan A. Stapley