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. 21, 2009
Filed:
Jul. 27, 2005
Ikuo Shimizu, Tokyo, JP;
Junzo Yamano, Mie, JP;
Motoharu Kinugasa, Mie, JP;
Katsumi Ukai, Mei, JP;
Kyowa Hakko Chemical Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a filter for electronic display devices, comprising a squarylium compound represented by General Formula (I): [wherein Rand Rmay be the same or different and each represents a hydrogen atom, an alkyl group optionally having substituent(s), an aralkyl group optionally having substituent(s), an aryl group optionally having substituent(s), or a heterocyclic group optionally having substituent(s); X represents a group represented by following Formula (A): (wherein Rand Rmay be the same or different and represents a hydrogen atom, an alkyl group optionally having substituent(s), an alkoxy group optionally having substituent(s), an aralkyl group optionally having substituent(s), an aryl group optionally having substituent(s), or a heterocyclic group optionally having substituent(s), wherein Rand Rmay be combined together with the adjacent nitrogen atom thereto form a heterocyclic group optionally having substituent(s))].