The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 2002
Filed:
Jul. 17, 2000
Applicant:
Inventors:
Paul Vincent Bartels, Wageningen, NL;
Stephan Henrick Dick Hulleman, Heelsum, NL;
Hubertus Cornelis Langelaan, Wageningen, NL;
Assignee:
Institut voor Agrotechnologisch Onderzoek (ATO-DLO), Wageningen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 1/100 ;
U.S. Cl.
CPC ...
B01D 1/100 ;
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.