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. 27, 2010
Filed:
Aug. 25, 2006
Takashi Takebe, Kawasaki, JP;
Kunio Shimizu, Otsuki, JP;
Shigeki Oka, Kunitachi, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
A polarizing plate includes two transparent supports A and B; and a polarizer sandwiched between the two transparent supports A and B; wherein (i) the transparent support A is a stretched cellulose ester film (a) which contains a non-phosphoric acid ester plasticizer and substantially does not contain a phosphoric acid ester plasticizer, and wherein (ii) the transparent support B is a stretched cellulose ester film (b) which has a retardation value Rof from 0 nm to 10 nm and a retardation value Rof from −30 nm to 20 nm, and the retardation value Rand the retardation value Rare defined by the following formulas (I) and (II):=()×  Formula (I):={()/2−  Formula (II):