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. 06, 2011
Filed:
Mar. 24, 2005
Applicants:
Kevin Cink, Brooklyn Park, MN (US);
Jeffrey C. Smith, Woodbury, MN (US);
James F. Nangeroni, Doylestown, PA (US);
Jed Richard Randall, Minneapolis, MN (US);
Inventors:
Kevin Cink, Brooklyn Park, MN (US);
Jeffrey C. Smith, Woodbury, MN (US);
James F. 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 9/08 (2006.01); C08J 9/00 (2006.01); C08J 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention provides a process for extruding a PLA resin using high levels of CO. Excellent quality, low density foam is produced easily and reproducibly. The foams arc capable of being heat-annealed to induce significant crystallinity, even when an ordinarily amorphous PLA resin is used.