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:
Mar. 20, 2007
Filed:
Dec. 17, 2003
Applicants:
Lars-olof Svedberg, Kvissleby, SE;
Guy Hovland, Njurunda, SE;
Thomas Holmlund, Sundsvall, SE;
Inventors:
Assignee:
Akzo Nobel N.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 9/16 (2006.01); C08J 9/00 (2006.01); B29C 44/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a method of preparing expanded thermoplastic microspheres, comprising charging thermally expandable microspheres into an expansion device comprising rotating feeding means enveloped by a hollow body, and one or more scrapers. The invention further relates to an expansion device for expanding thermoplastic microspheres.