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:
May. 09, 2017
Filed:
Aug. 27, 2012
Shusaku Goto, Osaka, JP;
Minoru Miyatake, Osaka, JP;
Tomohiro Mori, Osaka, JP;
Kentaro Yoshida, Osaka, JP;
Takeharu Kitagawa, Osaka, JP;
Shusaku Goto, Osaka, JP;
Minoru Miyatake, Osaka, JP;
Tomohiro Mori, Osaka, JP;
Kentaro Yoshida, Osaka, JP;
Takeharu Kitagawa, Osaka, JP;
NITTO DENKO CORPORATION, Ibaraki-Shi, Osaka, JP;
Abstract
A method for manufacturing a thin high-performance polarizing film includes coating a polyvinyl alcohol type resin on a resin substrate having a thickness of at least 20 μm and then drying the resin to thereby form a polyvinyl alcohol type resin layer, immersing thus produced polyvinyl alcohol type resin layer in a dyeing solution including a dichroic material to thereby have the dichroic material impregnated in the polyvinyl alcohol type resin layer, stretching the polyvinyl alcohol type resin layer having the dichroic material impregnated therein together with the resin substrate in a boric acid solution such that a total stretching ratio of 5.0 or more of the original length is achieved.