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. 21, 2006
Filed:
Dec. 13, 2002
Norimasa Maida, Yamaguchi-ken, JP;
Koji Fujii, Yamaguchi-ken, JP;
Go Fukui, Yamaguchi-ken, JP;
Toyo Kohan Co., Ltd., Tokyo, JP;
Abstract
A preventive film for a polarizer which comprises a non-oriented two-layer film comprising a polycarbonate film having a glass transition temperature of 100° C. or higher and, laminated on one surface thereof, a polyester him: a preventive film for a polarizer which comprises a non-oriented three-layer comprising a polycarbonate film having a glass transition temperature of 100° C. or higher and a polyester film laminated on one surface thereof and a polybutylene terephthalate film laminated on the other surface thereof and a polarizing pate which uses a polarizing film comprising a polarizer and two sheets of the above film adhered by heating with no use of an adhesive agent to both sides thereof. The preventive film exhibits an extremely small double refraction and is capable of being adhered directly to a polarizer through heating and the polarizing plate can be produced at a low cost.