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. 29, 2022
Filed:
Dec. 14, 2020
Applicant:
Nichia Corporation, Anan, JP;
Inventors:
Kenichi Aoyagi, Tokushima, JP;
Takashi Kaide, Anan, JP;
Motoharu Morikawa, Anan, JP;
Shoji Hosokawa, Tokushima, JP;
Assignee:
NICHIA CORPORATION, Anan, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/77 (2006.01); C09K 11/08 (2006.01);
U.S. Cl.
CPC ...
C09K 11/7734 (2013.01); C09K 11/0883 (2013.01);
Abstract
Provided is a method of producing a β-sialon fluorescent material having a high light emission intensity and an excellent light emission luminance. The method includes preparing a calcined product having a composition of β-sialon containing an activating element; grinding the calcined product to obtain a ground product; and heat-treating the ground product to obtain a heat-treated product. A specific surface area of the ground product is 0.2 m/g or more.