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).

  • Patent number: 11174523
    Abstract: 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: Grant
    Filed: June 13, 2017
    Date of Patent: November 16, 2021
    Assignee: Cool Separations B.V.
    Inventor: Jacob van Spronsen
  • Patent number: 10865334
    Abstract: 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: Grant
    Filed: August 5, 2014
    Date of Patent: December 15, 2020
    Assignee: Universiteit Leiden
    Inventors: Jacob van Spronsen, Geert-Jan Witkamp, Frank Hollman, Young Hae Choi, Robert Verpoorte
  • Publication number: 20190144955
    Abstract: 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: Application
    Filed: June 13, 2017
    Publication date: May 16, 2019
    Inventor: Jacob van Spronsen
  • Patent number: 9938547
    Abstract: 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: Grant
    Filed: June 20, 2014
    Date of Patent: April 10, 2018
    Assignee: TECHNISCHE UNIVERSITEIT DELFT
    Inventors: Jacob van Spronsen, Geert-Jan Witkamp, Bart de Graaff
  • Patent number: 9441146
    Abstract: 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: Grant
    Filed: June 7, 2011
    Date of Patent: September 13, 2016
    Assignee: Universiteit Leiden
    Inventors: Jacob van Spronsen, Geert-Jan Witkamp, Frank Hollman, Young Hae Choi, Robert Verpoorte
  • Patent number: 9371242
    Abstract: 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: Grant
    Filed: October 4, 2012
    Date of Patent: June 21, 2016
    Assignee: TECHNISCHE UNIVERSITEIT DELFT
    Inventors: Jacob Van Spronsen, Geert-Jan Witkamp
  • Publication number: 20160145662
    Abstract: 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: Application
    Filed: June 20, 2014
    Publication date: May 26, 2016
    Applicant: Technische Universiteit Delft
    Inventors: Jacob van Spronsen, Geert-Jan Witkamp, Bart de Graaff
  • Publication number: 20140374361
    Abstract: 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: Application
    Filed: October 4, 2012
    Publication date: December 25, 2014
    Inventors: Jacob Van Spronsen, Geert-Jan Witkamp
  • Publication number: 20140341934
    Abstract: 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: Application
    Filed: August 5, 2014
    Publication date: November 20, 2014
    Inventors: Jacob van Spronsen, Geert-Jan Witkamp, Frank Hollman, Young Hae Choi, Robert Verpoorte
  • Publication number: 20130149322
    Abstract: 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: Application
    Filed: June 7, 2011
    Publication date: June 13, 2013
    Applicant: UNIVERSITEIT LEIDEN
    Inventors: Jacob van Spronsen, Geert-Jan Witkamp, Frank Hollman, Young Hae Choi, Robert Verpoorte