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:
Jun. 06, 2006
Filed:
Sep. 26, 2001
Applicant:
Kari Kirjavainen, Tampere, FI;
Inventor:
Kari Kirjavainen, Tampere, FI;
Assignee:
Conenor Oy, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 47/00 (2006.01); B01D 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In an extrusion method and an extruder, an annular material flow is created by extruding material into an annular extrusion channel (). The extruder has a tubular filtering unit () arranged to the annular extrusion channel (), whereby the annular material flow flows through the tubular surface of the filtering unit ().