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:
Dec. 04, 2012
Filed:
Nov. 27, 2007
Applicants:
Daisuke Ogomi, Ibaraki, JP;
Minoru Miyatake, Ibaraki, JP;
Inventors:
Daisuke Ogomi, Ibaraki, JP;
Minoru Miyatake, Ibaraki, JP;
Assignee:
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for producing a polarizer of the present invention comprises: subjecting a polyvinyl alcohol film to at least a dyeing process, a crosslinking process and a stretching process; and then subjecting the polyvinyl alcohol film to a washing process with an aqueous solution containing 1 to 50% by weight of an alcohol and 0.5 to 10% by weight of an iodide compound. A polarizer produced by the production method has high transmittance and high degree of polarization.