Patents by Inventor Joris de Grooth

Joris de Grooth 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: 20230265585
    Abstract: A process for preparing a hollow fiber includes the steps of providing a dope solution including polyamide imide (PAI), providing an aqueous bore solution including polyethylene imine (PEI), extruding the dope solution in an cross-sectional annular shape and ejecting the bore solution in the center of the annular shape, allowing the PAI and the PEI to react, thereby forming an internal surface layer including the cross-linked reaction product, and forming a polyamide Thin Film Composite (TFC) layer by interfacial reaction of aqueous di- or triamine compound and organic di- or triacylhalide compound on the internal surface layer including the cross-linked reaction product.
    Type: Application
    Filed: June 25, 2021
    Publication date: August 24, 2023
    Applicant: AQUAPORIN A/S
    Inventors: Mehrdad MOHAMMADIFAKHR, Antoine KEMPERMAN, Joris de GROOTH, Krzysztof TRZASKUS
  • Patent number: 11020712
    Abstract: The present invention relates to a polyelectrolyte multilayer (PEM) membrane comprised of at least one bilayer, wherein the bilayer is comprised of a layer of a polymeric polycation and a layer of a polymeric polyanion. Furthermore, present invention relates to methods for the production of these PEM membranes by layer-by-layer deposition and the use of these PEM membranes for the decontamination of liquids, preferably water.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: June 1, 2021
    Assignee: NX Filtration Holding B.V.
    Inventors: Joris De Grooth, Maria Gerridina Elshof, Hendrik Dirk Willem Roesink
  • Patent number: 10960358
    Abstract: The present invention relates to a method for the production of a positively charged membrane. Furthermore the present invention relates to a positively charged membrane obtainable by the methods of present invention and the use of these positively charged membranes.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: March 30, 2021
    Assignee: NX Filtration Holding B.V.
    Inventors: Hendrik Dirk Willem Roesink, Joris De Grooth
  • Publication number: 20200164320
    Abstract: The present invention relates to a polyelectrolyte multilayer (PEM) membrane comprised of at least one bilayer, wherein the bilayer is comprised of a layer of a polymeric polycation and a layer of a polymeric polyanion. Furthermore, present invention relates to methods for the production of these PEM membranes by layer-by-layer deposition and the use of these PEM membranes for the decontamination of liquids, preferably water.
    Type: Application
    Filed: May 5, 2017
    Publication date: May 28, 2020
    Inventors: Joris De Grooth, Maria Gerridina Elshof, Hendrik Dirk Willem Roesink
  • Publication number: 20190201852
    Abstract: The present invention relates to a method for the production of a positively charged membrane. Furthermore the present invention relates to a positively charged membrane obtainable by the methods of present invention and the use of these positively charged membranes.
    Type: Application
    Filed: August 18, 2016
    Publication date: July 4, 2019
    Inventors: Hendrik Dirk Willem Roesink, Joris De Grooth
  • Patent number: 10307717
    Abstract: A porous membrane is made from a poly(phenylene ether) copolymer containing 10 to 40 mole percent repeat units derived from 2-methyl-6-phenylphenol and 60 to 90 mole percent repeat units derived from 2,6-dimethylphenol; and a block copolymer containing backbone or pendant blocks of poly(C2-4 alkylene oxide). The porous membrane is made by dissolving the poly(phenylene ether) copolymer in a water-miscible polar aprotic solvent to form a membrane-forming composition; and phase-inverting the membrane forming-composition in a first non-solvent composition to form the porous membrane. A method of making a hollow fiber by coextrusion through a spinneret having an annulus and a bore, includes coextruding the membrane-forming composition through the annulus, and a first non-solvent composition through the bore, into a second non-solvent composition to form the hollow fiber.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: June 4, 2019
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Albin Peter Berzinis, Joris de Grooth, Johannes de Brouwer, Miejuan Zhou, Pooja Bajaj, Rachel Elizabeth Halbfinger, Kristi Jean Narang
  • Patent number: 9815031
    Abstract: A separation module that includes a porous membrane, where the porous membrane includes a poly(phenylene ether) copolymer containing 10 to 40 mole percent repeat units derived from 2-methyl-6-phenylphenol and 60 to 90 mole percent repeat units derived from 2,6-dimethylphenol; and a block copolymer containing backbone or pendant blocks of poly(C2-4 alkylene oxide). The separation module can be used in devices for wastewater treatment, water purification, desalination, separating water-insoluble oil from oil-containing wastewater, membrane distillation, sugar purification, protein concentration, enzyme recovery, dialysis, liver dialysis, or blood oxygenation.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: November 14, 2017
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Albin Peter Berzinis, Joris de Grooth, Johannes de Brouwer, Meijuan Zhou, Pooja Bajaj, Rachel Elizabeth Halbfinger, Kristi Jean Narang
  • Publication number: 20170282128
    Abstract: A porous membrane is made from a poly(phenylene ether) copolymer containing 10 to 40 mole percent repeat units derived from 2-methyl-6-phenylphenol and 60 to 90 mole percent repeat units derived from 2,6-dimethylphenol; and a block copolymer containing backbone or pendant blocks of poly(C2-4 alkylene oxide). The porous membrane is made by dissolving the poly(phenylene ether) copolymer in a water-miscible polar aprotic solvent to form a membrane-forming composition; and phase-inverting the membrane forming-composition in a first non-solvent composition to form the porous membrane. A method of making a hollow fiber by coextrusion through a spinneret having an annulus and a bore, includes coextruding the membrane-forming composition through the annulus, and a first non-solvent composition through the bore, into a second non-solvent composition to form the hollow fiber.
    Type: Application
    Filed: November 21, 2016
    Publication date: October 5, 2017
    Inventors: Albin Peter Berzinis, Joris de Grooth, Johannes de Brouwer
  • Publication number: 20170282131
    Abstract: A separation module that includes a porous membrane, where the porous membrane includes a poly(phenylene ether) copolymer containing 10 to 40 mole percent repeat units derived from 2-methyl-6-phenylphenol and 60 to 90 mole percent repeat units derived from 2,6-dimethylphenol; and a block copolymer containing backbone or pendant blocks of poly(C2-4 alkylene oxide). The separation module can be used in devices for wastewater treatment, water purification, desalination, separating water-insoluble oil from oil-containing wastewater, membrane distillation, sugar purification, protein concentration, enzyme recovery, dialysis, liver dialysis, or blood oxygenation.
    Type: Application
    Filed: November 21, 2016
    Publication date: October 5, 2017
    Inventors: Albin Peter Berzinis, Joris de Grooth, Johannes de Brouwer
  • Publication number: 20080287640
    Abstract: A method of preparing polycarbonate includes a steps of providing a melt reaction mixture and allowing the melt reaction mixture to react to build molecular weight, thereby preparing the polycarbonate. The melt reaction mixture has a dihydroxy compound, an ester substituted diaryl carbonate mixture, and a melt transesterification catalyst where the ester substituted diaryl carbonate mixture may contain acid-substituted phenol. The method also includes the step of adjusting the molar ratio of acid-substituted phenol, if present, to melt transesterification catalyst (acid-substituted phenol/catalyst) in the melt reaction mixture to an amount of less than 10.
    Type: Application
    Filed: May 15, 2007
    Publication date: November 20, 2008
    Applicant: General Electric Company
    Inventors: Hatem Belfadhel, Hans-Peter Brack, Ignacio Vic Fernandez, Jorge Garcia Agudo, Joris de Grooth, Gerardo Hidalgo Llinas, Patrick Joseph McCloskey, Louis Obando, Martin Herke Oyevaar, Laurus van der Wekke, Dennis Willemse