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:
Jun. 02, 2015
Filed:
Nov. 18, 2008
Applicants:
Yufeng Liu, Woodbury, MN (US);
Stephen A. Johnson, Woodbury, MN (US);
Inventors:
Yufeng Liu, Woodbury, MN (US);
Stephen A. Johnson, Woodbury, MN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 7/02 (2006.01); B32B 27/36 (2006.01); B32B 37/15 (2006.01); B32B 38/00 (2006.01); C08K 3/22 (2006.01); C08G 63/183 (2006.01); C08G 63/189 (2006.01); C08G 63/88 (2006.01); C08L 67/02 (2006.01); G02B 5/08 (2006.01); G02B 5/30 (2006.01); G02B 1/04 (2006.01); B29D 11/00 (2006.01); B29C 47/00 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3083 (2013.01); Y10T 428/261 (2015.01); G02B 5/0841 (2013.01); B29D 11/00788 (2013.01); G02B 5/305 (2013.01); B29C 47/0057 (2013.01); G02B 1/04 (2013.01); C08L 2666/18 (2013.01); C08L 2205/02 (2013.01); C08G 63/88 (2013.01); C08G 63/183 (2013.01); C08G 63/189 (2013.01); C08L 67/02 (2013.01); C08L 2205/025 (2013.01); C08L 2205/05 (2013.01); B32B 2250/42 (2013.01); B32B 2250/244 (2013.01); B32B 2307/42 (2013.01); B32B 2307/418 (2013.01); B32B 2551/00 (2013.01); B32B 38/00 (2013.01); B32B 2307/706 (2013.01); B32B 2307/514 (2013.01); B32B 37/15 (2013.01); B32B 2307/40 (2013.01); B32B 2307/708 (2013.01); B32B 2307/416 (2013.01); B32B 2367/00 (2013.01); B32B 2307/412 (2013.01); B32B 37/153 (2013.01); B32B 2551/08 (2013.01); B32B 2250/05 (2013.01); B32B 2255/26 (2013.01); B32B 2255/10 (2013.01); B32B 2038/0028 (2013.01); C08K 2003/2296 (2013.01); B32B 7/02 (2013.01); B32B 27/36 (2013.01); G02F 2202/40 (2013.01);
Abstract
Multilayer optical films are described comprising at least one first optical layer comprising a birefringent thermoplastic polymer having an in-plane birefringence of at least 0.15 at 632.8 nm; and at least one second optical layer having an in-plane birefringence of less than 0.040 at 632.8 nm. The second optical layer comprises a copolymerized blend of at least one birefringent thermoplastic polymer and at least one second thermoplastic polymer.