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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.:

US 10549514 B1

PDFFull Text
Date of Patent:
Feb. 04, 2020

Filed:

Mar. 22, 2016

Optical film

Applicant:

Zeon Corporation, Chiyoda-ku, Tokyo, JP;

Inventors:

Kazuyuki Obuchi, Tokyo, JP;

Taku Hatano, Tokyo, JP;

Assignee:

ZEON CORPORATION, Chiyoda-ku, Tokyo, JP;

Attorney:

Kenja IP Law PC

Primary Examiner:

Sheeba Ahmed

Int. Cl.
CPC ...
B32B 27/32 (2006.01); B32B 25/04 (2006.01); B32B 25/14 (2006.01); B32B 27/22 (2006.01); B32B 25/16 (2006.01); B32B 27/24 (2006.01); B32B 25/08 (2006.01); B32B 7/04 (2019.01); C08L 53/02 (2006.01); H05B 33/02 (2006.01); B32B 27/28 (2006.01); B32B 27/20 (2006.01); B32B 15/06 (2006.01); B32B 27/30 (2006.01); H01L 51/52 (2006.01); B32B 7/02 (2019.01); C08F 8/04 (2006.01); C08F 297/04 (2006.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
B32B 27/285 (2013.01); B32B 7/02 (2013.01); B32B 7/04 (2013.01); B32B 15/06 (2013.01); B32B 25/04 (2013.01); B32B 25/08 (2013.01); B32B 25/14 (2013.01); B32B 25/16 (2013.01); B32B 27/20 (2013.01); B32B 27/22 (2013.01); B32B 27/24 (2013.01); B32B 27/30 (2013.01); B32B 27/302 (2013.01); B32B 27/32 (2013.01); B32B 27/325 (2013.01); C08F 8/04 (2013.01); C08F 297/046 (2013.01); C08L 53/02 (2013.01); H01L 51/5237 (2013.01); H01L 51/5253 (2013.01); H01L 51/5281 (2013.01); H05B 33/02 (2013.01); B32B 27/281 (2013.01); B32B 2250/03 (2013.01); B32B 2250/40 (2013.01); B32B 2270/00 (2013.01); B32B 2307/21 (2013.01); B32B 2307/306 (2013.01); B32B 2307/308 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/412 (2013.01); B32B 2307/51 (2013.01); B32B 2307/546 (2013.01); B32B 2307/71 (2013.01); B32B 2307/7246 (2013.01); B32B 2307/732 (2013.01); B32B 2405/00 (2013.01); B32B 2457/206 (2013.01); G02B 5/30 (2013.01); H01L 2251/5338 (2013.01);
Abstract

An optical film including, in this order: a first layer containing a hydrogenated product of an aromatic vinyl compound-conjugated diene compound block copolymer; a second layer containing a norbornene-based polymer; and a third layer containing a hydrogenated product of an aromatic vinyl compound-conjugated diene compound block copolymer. Preferably, the hydrogenated product of the aromatic vinyl compound-conjugated diene compound block copolymer is a hydrogenated product of a styrene-isoprene copolymer. Preferably, a copolymerization ratio of styrene/isoprene in the hydrogenated product of the styrene-isoprene copolymer is 50/50 to 90/10.

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