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:
Feb. 27, 2015
Fujifilm Corporation, Tokyo, JP;
Nobutaka Fukagawa, Kanagawa, JP;
Yu Naito, Kanagawa, JP;
Mayumi Nojiri, Kanagawa, JP;
Hiroyuki Hagio, Kanagawa, JP;
Aiko Yoshida, Kanagawa, JP;
Hideyuki Nishikawa, Kanagawa, JP;
FUJIFILM CORPORATION, Tokyo, JP;
Abstract
A cellulose acylate film, containing: at least two or more of chelating agents having different pKa values from one another, wherein the chelating agents comprise: a chelating agent A having at least one functional group whose acid dissociation constant pKa, measured at 25° C. in a mixed solvent having a mixing ratio of tetrahydrofuran 60 ml/water 40 ml, is 6 or less; and a chelating agent B having at least one functional group of a conjugate acid whose pKa, measured at the same condition, is 7 or more; and a cellulose acylate, and wherein the number of bright spots of the cellulose acylate film is equal to or less than 500/cm; a polarizing plate protective film, a polarizing plate and a liquid crystal display using the same.