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:
Feb. 25, 2025
Filed:
Nov. 08, 2019
Applicant:
Zeon Corporation, Tokyo, JP;
Inventors:
Kazuki Kumazawa, Tokyo, JP;
Hironari Sudeji, Tokyo, JP;
Assignee:
ZEON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/30 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 71/02 (2006.01); C08L 53/02 (2006.01); B29K 96/04 (2006.01);
U.S. Cl.
CPC ...
G02B 5/3083 (2013.01); B29C 48/0018 (2019.02); B29C 48/08 (2019.02); B29C 71/02 (2013.01); C08L 53/025 (2013.01); B29K 2096/04 (2013.01); B29K 2995/0034 (2013.01); C08L 2203/16 (2013.01);
Abstract
An optical film formed of a resin C including a copolymer P containing a polymerization unit A and a polymerization unit B, wherein the optical film includes a phase separation structure that expresses structural birefringence, the phase separation structure includes a phase (A) containing as a main component the polymerization unit A and a phase (B) containing as a main component the polymerization unit B, and |n(A)−n(B)| is 0.12 or more.