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. 28, 2009
Filed:
Nov. 18, 2003
Susumu Yamanobe, Gunma, JP;
Masaaki Tamura, Gunma, JP;
Yoji Yamaguchi, Gunma, JP;
Hideo Yamamoto, Gunma, JP;
Susumu Yamanobe, Gunma, JP;
Masaaki Tamura, Gunma, JP;
Yoji Yamaguchi, Gunma, JP;
Hideo Yamamoto, Gunma, JP;
Japan Carlit Co., Ltd., Tokyo, JP;
Abstract
A coloring matter absorbing a near-infrared ray which comprises a diimonium salt containing a sulfonimide as an anion moiety, represented by the general formula (1): wherein R may be the same or different and represents a moiety selected from the group consisting of an alkyl group, a halogenated alkyl group, a cyanoalkyl group, an aryl group, a hydroxyl group, a phenyl group, and a phenylalkylene group, and Rand Rmay be the same or different and each represent a fluoroalkyl group, or together form a fluoroalkylene group. The coloring matter absorbing a near-infrared ray is excellent in the resistance to heat and moisture, and thus exhibits an ability of absorbing a near-infrared ray not lowering for a long period of time. A filter for cutting off a near-infrared ray manufactured by using the coloring matter can be advantageously used for wide applications such as a plasma display panel, an optical lens, a glass for an automobile, and a glass for a building material, due to its excellent resistance to heat and moisture.