Patents by Inventor Anna Dite Cuiper

Anna Dite Cuiper 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).

  • Process and plant for the production of ?-Caprolactam and ammonium sulfate on industrial scale
    Patent number: 12486225
    Abstract: The invention provides a process and a plant for the production of ?-caprolactam and crystalline ammonium sulfate in an industrial-scale plant, wherein the plant comprises a Beckmann rearrangement reaction section, an ammonium sulfate crystallization section, and one or more heat exchangers configured to transfer heat from the Beckmann rearrangement reaction section to the ammonium sulfate crystallization section and wherein the process comprises the steps of: a) feeding (i) cyclohexanone oxime and (ii) oleum and/or sulfuric acid to the Beckmann rearrangement reaction section b) reacting components (i) and (ii) in the Beckmann rearrangement reaction section to form a reaction mixture comprising ?-caprolactam, whereby heat of reaction is generated; c) discharging the reaction mixture comprising ?-caprolactam from the Beckmann rearrangement reaction section; d) removing partially or fully the heat of reaction generated in the Beckmann rearrangement reaction section by one or more heat exchangers configure
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: December 2, 2025
    Assignee: CAP III B.V.
    Inventors: Johan Thomas Tinge, Peter Roos, Louise Annemarie Groot Zevert, Anna Dite Cuiper
  • Process for the recovery of epsilon-caprolactam from nylon 6-containing multi-component material
    Patent number: 12473255
    Abstract: The application provides a process for recovering purified ?-caprolactam from nylon 6-containing multi-component material which comprises the steps of a) providing a pre-concentrated nylon 6-containing material obtained by extraction, b) depolymerization, c) recovery, and d) purification that comprises extraction, back-extraction, distillation and crystallization.
    Type: Grant
    Filed: July 11, 2023
    Date of Patent: November 18, 2025
    Assignee: HSCC Sustainable Venturing B.V.
    Inventors: Jasper Verduyckt, Jarno Martijn Westerhof, Peter Roos, Anna Dite Cuiper, Kate Emily Murphy, Wenjing Fu, Johan Thomas Tinge
  • PROCESS FOR THE RECOVERY OF EPSILON-CAPROLACTAM FROM NYLON 6-CONTAINING MULTI-COMPONENT MATERIAL
    Publication number: 20250263369
    Abstract: The application provides a process for recovering purified ?-caprolactam from nylon 6-containing multi-component material which comprises the steps of a) providing a pre-concentrated nylon 6-containing material obtained by extraction, b) depolymerization, c) recovery, and d) purification that comprises extraction, back-extraction, distillation and crystallization.
    Type: Application
    Filed: July 11, 2023
    Publication date: August 21, 2025
    Applicant: CAP III B.V.
    Inventors: Jasper Verduyckt, Jarno Martijn Westerhof, Peter Roos, Anna Dite Cuiper, Kate Emily Murphy, Wenjing Fu, Johan Thomas Tinge
  • PROCESS FOR THE RECOVERY OF EPSILON-CAPROLACTAM AND POLYETHER POLYURETHANE FROM NYLON 6 AND POLYETHER POLYURETHANE COMPRISING MATERIALS
    Publication number: 20250257038
    Abstract: The present invention provides a process for recovering ?-caprolactam and polyether polyurethane from nylon 6 and polyether polyurethane comprising material in a plant, wherein the plant comprises a separation section [B], a depolymerization section [C], a recovery section [D], and a purification section [E].
    Type: Application
    Filed: July 11, 2023
    Publication date: August 14, 2025
    Applicant: CAP III B.V.
    Inventors: Jasper Verduyckt, Marijke Hilde Leen Groothaert, Niek Van Heijningen, Jarno Martijn Westerhof, Abraham Peter Markusse, Peter Roos, Anna Dite Cuiper, Kate Emily Murphy, Johan Thomas Tinge
  • Process for the recovery of epsilon-caprolactam from nylon 6-containing multi-component material
    Patent number: 12371407
    Abstract: The present invention provides an improved process for the recovery of ?-caprolactam from Nylon 6 comprising multi-component material, in particular multi-layered film. Further, the invention provides a plant configured to carry out the process of the invention, and the recovered e-caprolactam obtainable by the process of the invention that has a product carbon footprint of less than 2.5 kg CO2 equivalent per kg purified e-caprolactam (based on data originating from ecoinvent version 3.7.1; location: Europe).
    Type: Grant
    Filed: January 27, 2023
    Date of Patent: July 29, 2025
    Assignee: CAP III B.V.
    Inventors: Jasper Verduyckt, Marijke Hilde Leen Groothaert, Anna Dite Cuiper, Wenjing Fu, Johan Thomas Tinge
  • PROCESS FOR THE RECOVERY OF EPSILON-CAPROLACTAM FROM NYLON 6-CONTAINING MULTI- COMPONENT MATERIAL
    Publication number: 20250100974
    Abstract: The present invention provides an improved process for the recovery of ?-caprolactam from Nylon 6 comprising multi-component material, in particular multi-layered film. Further, the invention provides a plant configured to carry out the process of the invention, and the recovered e-caprolactam obtainable by the process of the invention that has a product carbon footprint of less than 2.5 kg CO2 equivalent per kg purified e-caprolactam (based on data originating from ecoinvent version 3.7.1; location: Europe).
    Type: Application
    Filed: January 27, 2023
    Publication date: March 27, 2025
    Applicant: CAP III B.V.
    Inventors: Jasper Verduyckt, Marijke Hilde Leen Groothaert, Anna Dite Cuiper, Wenjing Fu, Johan Thomas Tinge
  • PROCESS AND PLANT FOR THE PRODUCTION OF EPSILON-CAPROLACTAM AND AMMONIUM SULFATE ON INDUSTRIAL SCALE
    Publication number: 20220402868
    Abstract: The invention provides a process and a plant for the production of ?-caprolactam and crystalline ammonium sulfate in an industrial-scale plant, wherein the plant comprises a Beckmann rearrangement reaction section, an ammonium sulfate crystallization section, and one or more heat exchangers configured to transfer heat from the Beckmann rearrangement reaction section to the ammonium sulfate crystallization section and wherein the process comprises the steps of: a) feeding (i) cyclohexanone oxime and (ii) oleum and/or sulfuric acid to the Beckmann rearrangement reaction section b) reacting components (i) and (ii) in the Beckmann rearrangement reaction section to form a reaction mixture comprising ?-caprolactam, whereby heat of reaction is generated; c) discharging the reaction mixture comprising ?-caprolactam from the Beckmann rearrangement reaction section; d) removing partially or fully the heat of reaction generated in the Beckmann rearrangement reaction section by one or more heat exchangers configure
    Type: Application
    Filed: November 5, 2020
    Publication date: December 22, 2022
    Inventors: Johan Thomas Tinge, Peter Roos, Louise Annemarie Groot Zevert, Anna Dite Cuiper