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:
Aug. 07, 2012
Filed:
Dec. 27, 2006
Hiroaki Arita, Fuchu, JP;
Kazuhiro Fukuda, Hachioji, JP;
Koji Ozaki, Hino, JP;
Issei Suzuki, Hachioji, JP;
Hiroaki Arita, Fuchu, JP;
Kazuhiro Fukuda, Hachioji, JP;
Koji Ozaki, Hino, JP;
Issei Suzuki, Hachioji, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
A moistureproof cellulose ester film which has satisfactory optical performances, excellent moisture permeability, and excellent dimensional stability; and a protective film for polarizers which comprises the film. This moistureproof cellulose ester film comprises: a cellulose ester film and, deposited on at least one side thereof in the following order, one or more adhesion layers each having a carbon content in terms of atom number concentration of 1-40% and comprising an inorganic compound as the main component, one or more barrier layers each having a carbon content in terms of atom number concentration of 0.1% or lower, comprising silicon oxide as the main component, and having a film density of 2.16-2.60, and one or more protective layers each having a carbon content in terms of atom number concentration of 1-40% and comprising an inorganic compound as the main component. The total thickness of these deposit layers on one side is 1-100 nm. It is characterized in that the barrier layers on one side have a thickness of 0.1-30 nm.