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:
Sep. 27, 2005
Filed:
Aug. 26, 2003
Norberto Silvi, Clifton Park, NY (US);
Mark H. Giammattei, Selkirk, NY (US);
Jan P. Keulen, Ossendrecht, NL;
David W. Woodruff, Clifton Park, NY (US);
Paul R. Wilson, Latham, NY (US);
Paul W. Buckley, Scotia, NY (US);
Norman Enoch Johnson, Mt. Vernon, IN (US);
Norberto Silvi, Clifton Park, NY (US);
Mark H. Giammattei, Selkirk, NY (US);
Jan P. Keulen, Ossendrecht, NL;
David W. Woodruff, Clifton Park, NY (US);
Paul R. Wilson, Latham, NY (US);
Paul W. Buckley, Scotia, NY (US);
Norman Enoch Johnson, Mt. Vernon, IN (US);
General Electric Company, Pittsfield, MA (US);
Abstract
A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents for removal of remaining solvent. The one-step method is highly efficient having very high throughput rates while at the same time providing a polymer product containing low levels of residual solvent.