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. 13, 2014
Filed:
Apr. 24, 2009
Applicants:
James Nangeroni, Doylestown, PA (US);
Jed Richard Randall, Minneapolis, MN (US);
Inventors:
James Nangeroni, Doylestown, PA (US);
Jed Richard Randall, Minneapolis, MN (US);
Assignee:
NatureWorks LLC, Minnetonka, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J 9/00 (2006.01); C08J 9/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention provides an economical process for extruding a PLA resin into a low density foam with a high closed cell content. Excellent quality, low density foam is produced easily and reproducibly. The PLA resin in the foam has a weight average molecular weight of at least 500,000 and an intrinsic viscosity of at least 1.4 deciliters/gram.