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:
May. 11, 2010
Filed:
Feb. 15, 2008
Applicants:
Albert Chin, Newton, MA (US);
John Jianhua Chen, Plymouth, MN (US);
Ronald A. Sahatjian, Lexington, MA (US);
Thomas A. Svatek, Carlisle, MA (US);
Inventors:
Albert Chin, Newton, MA (US);
John Jianhua Chen, Plymouth, MN (US);
Ronald A. Sahatjian, Lexington, MA (US);
Thomas A. Svatek, Carlisle, MA (US);
Assignee:
Boston Scientific Scimed, Inc., Maple Grove, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 47/06 (2006.01); B29C 47/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
In certain aspects of the invention, an extrusion apparatus for making a multilayer article includes multiple discs, each of which has at least one passageway configured to permit fluid flow therethrough in a flow direction. At least one of the discs includes a cone shaped portion extending substantially parallel to the flow direction.