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:
Jul. 09, 2013
Filed:
Nov. 12, 2010
Yumi Fukuda, Tokyo, JP;
Hironori Asai, Yokohama, JP;
Ryosuke Hiramatsu, Kawasaki, JP;
Junichi Tatami, Yokohama, JP;
Katsutoshi Komeya, Yokohama, JP;
Toru Wakihara, Yokohama, JP;
Katsuko Tamatani, Fujisawa, JP;
Yumi Fukuda, Tokyo, JP;
Masaaki Tamatani, Fujisawa, JP;
Hironori Asai, Yokohama, JP;
Ryosuke Hiramatsu, Kawasaki, JP;
Junichi Tatami, Yokohama, JP;
Katsutoshi Komeya, Yokohama, JP;
Toru Wakihara, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
A luminescent material which is featured in that it exhibits an emission peak at a wavelength ranging from 490 to 580 nm as it is excited by light having a wavelength ranging from 250 to 500 nm and that it has a composition represented by the following general formula (2):(MR)AlSiON  (2) (In the general formula (2), M is at least one metallic element excluding Si and Al, R is a luminescence center element, and x, a2, b2, c2 and d2 satisfy the following relationships:0<x≦1, 0.93<a2<1.3, 4.0<b2<5.80.6<c2<1, 6<d2<11).