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:
Jul. 02, 2019
Filed:
Oct. 14, 2014
Applicant:
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Inventors:
Assignee:
NITTO DENKO CORPORATION, Ibaraki-shi, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01); G02B 1/04 (2006.01); G02B 5/30 (2006.01); B29K 29/00 (2006.01);
U.S. Cl.
CPC ...
B29D 11/00788 (2013.01); B29D 11/00644 (2013.01); G02B 1/04 (2013.01); G02B 5/3033 (2013.01); B29K 2029/04 (2013.01);
Abstract
There is provided a polarizing film that is excellent in optical characteristics, and is excellent in durability and water resistance. A polarizing film according to an embodiment of the present invention includes a polyvinyl alcohol-based resin film having a thickness of 10 μm or less. The polyvinyl alcohol-based resin film has an iodine concentration of 6.0 wt % or less; and the polarizing film has a cross-linking index defined by the below-indicated equation of from 100 to 200: (Cross-linking index)=(Iodine concentration in film)×(Boric acid concentration in film).