Patents Assigned to Institut voor Agrotechnologisch Onderzoek (ATO-DLO)
  • Method for the extraction of a substance from a starting material
    Patent number: 6491892
    Abstract: The starting material is conveyed in an extruder through zones of high and low pressure formed by different screw elements of opposing pitch. An extractant is fed in the high pressure zones located upstream of the screw elements of opposing pitch. The extractant then flows in a direction countercurrent to a direction of transport of the starting material and is discharged via a discharge opening located in or close to the low pressure zone, downstream of a screw element of opposing pitch.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: December 10, 2002
    Assignee: Institut voor Agrotechnologisch Onderzoek (ATO-DLO)
    Inventors: Paul Vincent Bartels, Stephan Henrick Dick Hulleman, Hubertus Cornelis Langelaan