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:
Sep. 19, 2006
Filed:
Jul. 26, 2004
Shoji Oiso, Saitama, JP;
Kumiko Ishii, Saitama, JP;
Yoshitaka Kajiwara, Saitama, JP;
Toru Tabei, Saitama, JP;
Shoji Oiso, Saitama, JP;
Kumiko Ishii, Saitama, JP;
Yoshitaka Kajiwara, Saitama, JP;
Toru Tabei, Saitama, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention relates to a polyvinyl alcohol type polarizing film or plate which comprises a water-soluble dye having the formula (1) in a free acid form or a copper complex salt thereof. The said polarizing plate has excellent polarizing performance capability and durability, and is suitably used for the green channel of a liquid crystal projector when B in formula (1) is a benzoylamino group and the water-soluble dye has a wave length for maximum absorption (λmax) of 520 nm or more and less than 580 nm