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:
Apr. 01, 2014
Filed:
Oct. 01, 2007
Takumi Yutou, Ibaraki, JP;
Shinichi Takada, Ibaraki, JP;
Mitsushi Yamamoto, Ibaraki, JP;
Kazuhito Okumura, Ibaraki, JP;
Takumi Yutou, Ibaraki, JP;
Shinichi Takada, Ibaraki, JP;
Mitsushi Yamamoto, Ibaraki, JP;
Kazuhito Okumura, Ibaraki, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
There are provided an optical surface protection film capable of permitting even a visual inspection of a coated body having a fine roughness, such as a prism sheet, to be performed under the condition that the protection film is attached to the coated body and excelling in adhesion reliability without an optical adverse effect on the coated body, and an optical film with the surface protection film. The optical surface protection film () has a base material layer () and an adhesive layer () stacked on one surface of the base material layer. The surface of the base material layer () on the side of the adhesive layer () has an arithmetic surface average roughness (Ra) of 0.65 μm or less. The other surface of the base material layer () has an arithmetic surface average roughness (Ra) of 0.6 μm or more.