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:
Oct. 25, 2016
Filed:
Jun. 22, 2011
Applicants:
Yufeng Liu, Woodbury, MN (US);
David T. Yust, Woodbury, MN (US);
Stephen A. Johnson, Woodbury, MN (US);
Inventors:
Yufeng Liu, Woodbury, MN (US);
David T. Yust, Woodbury, MN (US);
Stephen A. Johnson, Woodbury, MN (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 1/04 (2006.01); B32B 7/02 (2006.01); B32B 27/08 (2006.01); B32B 27/36 (2006.01); G02B 5/08 (2006.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
G02B 1/04 (2013.01); B32B 7/02 (2013.01); B32B 27/08 (2013.01); B32B 27/36 (2013.01); G02B 5/0841 (2013.01); G02B 5/305 (2013.01); B32B 2250/42 (2013.01); B32B 2307/418 (2013.01); B32B 2457/202 (2013.01); B32B 2551/00 (2013.01); Y10T 428/24942 (2015.01);
Abstract
Multilayer optical film that can be used as a reflective polarizer or mirror is disclosed. The multilayer optical film comprises alternating optical layers of polyesters such as PET and PEN, copolymerized with 4,4'-biphenyl dicarboxylate. The multilayer optical film exhibits a high ratio of in-plane to out-of-plane birefringence.