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:
Nov. 19, 2019
Filed:
Dec. 15, 2017
National Institute for Materials Science, Tsukuba-shi, Ibaraki, JP;
Nichia Corporation, Anan-shi, Tokushima, JP;
NATIONAL INSTITUTE FOR MATERIALS SCIENCE, Tsukuba-shi, JP;
NICHIA CORPORATION, Anan-shi, JP;
Abstract
Provided are a fluorescent material having a high light emission intensity, a method for producing the same, and a light emitting device using the same. The present fluorescent material includes a composition represented by formula (I): SiEuAlON, wherein when the sum of a parameter u and a parameter w is taken as 13, parameters u, v, w, x, and y in the formula (I) satisfy the following formulae (1) to (5).2.77≤≤2.88  (1)0.04≤≤0.08  (2)10.12≤≤10.23  (3)0.42≤≤0.95  (4)12.89≤≤13.65  (5)