Patents by Inventor Jacob van Spronsen
Jacob van Spronsen 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: 20240238695Abstract: A system is provided for performing crystallisation by cooling, comprising two crystallisation units, each of the two crystallisation units comprising a cooling body with a crystallisation surface for forming crystals on, and a scraper unit, comprising a scraping member arranged to be moved over the crystallisation surface for scraping crystals from the crystallisation surface and a scraper actuator for moving the scraping member over the crystallisation surface, wherein the scraper actuator of a first of the two crystallisation units can be actuated independently from a scraper actuator of a second of the two crystallisation units.Type: ApplicationFiled: May 5, 2022Publication date: July 18, 2024Inventors: Dirk Cornelis NOOTENBOOM, Jacob VAN SPRONSEN
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Patent number: 11174523Abstract: The invention is directed to a method for recovering lactose from an aqueous lactose solution comprising a concentration step, wherein water is removed from the aqueous lactose solution by freezing out water at a temperature below the eutectic temperature of the aqueous lactose solution and at a lactose concentration higher than the eutectic concentration of the aqueous lactose solution, thereby obtaining a concentrated lactose solution; and a crystallization step, wherein at least part of the concentrated lactose solution is subjected to crystallization at a temperature above the eutectic temperature of the concentrated lactose solution, thereby obtaining lactose crystals.Type: GrantFiled: June 13, 2017Date of Patent: November 16, 2021Assignee: Cool Separations B.V.Inventor: Jacob van Spronsen
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Patent number: 10865334Abstract: The invention is directed to a process for extracting materials from biological material, which process is characterized in that the naturally occurring biological material is treated with an extractant consisting of a deep eutectic solvent of natural origin or a an ionic liquid of natural origin to produce a biological extract of natural origin dissolved in the said solvent or ionic liquid.Type: GrantFiled: August 5, 2014Date of Patent: December 15, 2020Assignee: Universiteit LeidenInventors: Jacob van Spronsen, Geert-Jan Witkamp, Frank Hollman, Young Hae Choi, Robert Verpoorte
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Publication number: 20190144955Abstract: The invention is directed to a method for recovering lactose from an aqueous lactose solution comprising a concentration step, wherein water is removed from the aqueous lactose solution by freezing out water at a temperature below the eutectic temperature of the aqueous lactose solution and at a lactose concentration higher than the eutectic concentration of the aqueous lactose solution, thereby obtaining a concentrated lactose solution; and a crystallization step, wherein at least part of the concentrated lactose solution is subjected to crystallization at a temperature above the eutectic temperature of the concentrated lactose solution, thereby obtaining lactose crystals.Type: ApplicationFiled: June 13, 2017Publication date: May 16, 2019Inventor: Jacob van Spronsen
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Patent number: 9938547Abstract: The invention is directed to a process for the preparation of 2,5-furandicarboxylic acid (FDCA) by fermentation comprising fermenting a suitable starting compound to produce an aqueous solution of a salt of FDCA having a pH of at least 7, optionally removing solids from said solution, e.g. by filtration, subsequently freeze crystallizing the said salt of FDCA from said solution at said pH, isolating the said FDCA salt in the form of solid crystals, preparing an aqueous solution of said salt and crystallizing FDCA as the free acid from said solution at an acidic pH.Type: GrantFiled: June 20, 2014Date of Patent: April 10, 2018Assignee: TECHNISCHE UNIVERSITEIT DELFTInventors: Jacob van Spronsen, Geert-Jan Witkamp, Bart de Graaff
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Patent number: 9441146Abstract: The invention is directed to a process for extracting materials from biological material, which process is characterized in that the naturally occurring biological material is treated with an extractant consisting of a deep eutectic solvent of natural origin or a an ionic liquid of natural origin to produce a biological extract of natural origin dissolved in the said solvent or ionic liquid.Type: GrantFiled: June 7, 2011Date of Patent: September 13, 2016Assignee: Universiteit LeidenInventors: Jacob van Spronsen, Geert-Jan Witkamp, Frank Hollman, Young Hae Choi, Robert Verpoorte
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Patent number: 9371242Abstract: The invention is directed to a process for the recovery or removal of one or more crystallizable compounds from an aqueous solution containing, apart from the said crystallizable compounds, one or more organic or inorganic scale-forming or scale-inducing materials having a lower solubility in water than the said crystallizable compounds, said process comprising subjecting the said solution to at least one eutectic freeze crystallization step with recovery of ice and said one or more crystallizable compounds in crystalline form, recycling at least part of the mother liquor formed in the said eutectic crystallization step and subjecting the said recycle to a treatment with seed crystals for said scale forming or scale inducing compounds, removing at least part of the solid material obtained in said treatment step and recycle of the aqueous liquid thus obtained to the eutectic freeze crystallization step or to the feed thereto.Type: GrantFiled: October 4, 2012Date of Patent: June 21, 2016Assignee: TECHNISCHE UNIVERSITEIT DELFTInventors: Jacob Van Spronsen, Geert-Jan Witkamp
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Publication number: 20160145662Abstract: The invention is directed to a process for the preparation of 2,5-furandicarboxylic acid (FDCA) by fermentation comprising fermenting a suitable starting compound to produce an aqueous solution of a salt of FDCA having a pH of at least 7, optionally removing solids from said solution, e.g. by filtration, subsequently freeze crystallizing the said salt of FDCA from said solution at said pH, isolating the said FDCA salt in the form of solid crystals, preparing an aqueous solution of said salt and crystallizing FDCA as the free acid from said solution at an acidic pH.Type: ApplicationFiled: June 20, 2014Publication date: May 26, 2016Applicant: Technische Universiteit DelftInventors: Jacob van Spronsen, Geert-Jan Witkamp, Bart de Graaff
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Publication number: 20140374361Abstract: The invention is directed to a process for the recovery or removal of one or more crystallizable compounds from an aqueous solution containing, apart from the said crystallizable compounds, one or more organic or inorganic scale- forming or scale-inducing materials having a lower solubility in water than the said crystallizable compounds, said process comprising subjecting the said solution to at least one eutectic freeze crystallization step with recovery of ice and said one or more crystallizable compounds in crystalline form, recycling at least part of the mother liquor formed in the said eutectic crystallization step and subjecting the said recycle to a treatment with seed crystals for said scale forming or scale inducing compounds, removing at least part of the solid material obtained in said treatment step and recycle of the aqueous liquid thus obtained to the eutectic freeze crystallization step or to the feed thereto.Type: ApplicationFiled: October 4, 2012Publication date: December 25, 2014Inventors: Jacob Van Spronsen, Geert-Jan Witkamp
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Publication number: 20140341934Abstract: The invention is directed to a process for extracting materials from biological material, which process is characterized in that the naturally occurring biological material is treated with an extractant consisting of a deep eutectic solvent of natural origin or a an ionic liquid of natural origin to produce a biological extract of natural origin dissolved in the said solvent or ionic liquid.Type: ApplicationFiled: August 5, 2014Publication date: November 20, 2014Inventors: Jacob van Spronsen, Geert-Jan Witkamp, Frank Hollman, Young Hae Choi, Robert Verpoorte
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Publication number: 20130149322Abstract: The invention is directed to a process for extracting materials from biological material, which process is characterized in that the naturally occurring biological material is treated with an extractant consisting of a deep eutectic solvent of natural origin or a an ionic liquid of natural origin to produce a biological extract of natural origin dissolved in the said solvent or ionic liquid.Type: ApplicationFiled: June 7, 2011Publication date: June 13, 2013Applicant: UNIVERSITEIT LEIDENInventors: Jacob van Spronsen, Geert-Jan Witkamp, Frank Hollman, Young Hae Choi, Robert Verpoorte