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:
Nov. 13, 2012
Filed:
May. 13, 2005
Hiroyuki Kawanishi, Minami-Ashigara, JP;
Yosuke Nishiura, Minami-Ashigara, JP;
Takako Nishiura, Legal Representative, Odawara, JP;
Hiroyuki Kawanishi, Minami-Ashigara, JP;
Yosuke Nishiura, Minami-Ashigara, JP;
Takako Nishiura, legal representative, Odawara, JP;
FUJIFILM Corporation, Minato-Ku, Tokyo, JP;
Abstract
An optical cellulose acylate film comprising a polymer component which is a cellulose acylate obtained by substituting hydroxyl groups of a cellulose by an acetyl group and an acyl group having 3 or more carbon atoms, wherein a substitution degree A of the acetyl group and a substitution degree B of the acyl group having 3 or more carbon atoms satisfy the following formulae (I) and (II): 2.0≦A+B≦3.0 (I), 0<B (II), and the optical cellulose acylate film comprises a retardation-expressing agent which is at least one of a rod-like compound and a discotic compound or an elastic modulus E(MD) in a casting direction and an elastic modulus E(TD) in a casting width direction satisfy the following formulae (III) and (IV): 1,500 MPa≦E(MD)≦3,400 Mpa (III) and 1,200 MPa≦E(TD)≦3,400 Mpa (IV).