Patents by Inventor Johannes van Spronsen

Johannes 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).

  • Crystallizer With Internal Scraped Cooled Wall and Method of Use Thereof
    Publication number: 20100186444
    Abstract: Apparatus for separating solids from a mixture or solution, comprising an outer wall provided with an inlet for the mixture or solution and provided with a first discharge for discharging an ice slurry and a second discharge for discharging a salt slurry, one or more raking or scraping elements for scraping solidified material from cooled wall portions which are cooled at or close to a temperature where the mixture or solution solidifies, preferably the eutectic temperature thereof.
    Type: Application
    Filed: September 21, 2009
    Publication date: July 29, 2010
    Applicant: Technische Universiteit Delft
    Inventors: J. A. Evers, Johannes van Spronsen, Elif Fatma Genceli Güner, Marcos Rodriguez Pascual, Geert-Jan Witkamp
  • Treatment of Molybdate Containing Waste Streams
    Publication number: 20100115988
    Abstract: The invention is directed to a process for the treatment of an aqueous solution comprising sodium carbonate and/or sodium bicarbonate and sodium molybdate, said process comprising freeze crystallising the solution at the eutectic freezing point thereof and recovering substantially pure ice crystals, substantially pure sodium carbonate and/or sodium bicarbonate and an aqueous product solution containing dissolved sodium molybdate.
    Type: Application
    Filed: September 22, 2009
    Publication date: May 13, 2010
    Applicant: Technische Universiteit Delft
    Inventors: Geert-Jan Witkamp, Johannes van Spronsen, Melis Hasselaar