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:
Jan. 29, 2019
Filed:
Aug. 04, 2016
Applicant:
Nichia Corporation, Anan-shi, Tokushima, JP;
Inventors:
Shoji Hosokawa, Tokushima, JP;
Motoharu Morikawa, Anan, JP;
Tadayoshi Yanagihara, Anan, JP;
Kenichi Aoyagi, Tokushima, JP;
Takashi Kaide, Anan, JP;
Assignee:
NICHIA CORPORATION, Anan-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/08 (2006.01); C09K 11/77 (2006.01);
U.S. Cl.
CPC ...
C09K 11/7734 (2013.01); C09K 11/0883 (2013.01);
Abstract
A method for producing a β-sialon fluorescent material can be provided. The method includes preparing a composition containing silicon nitride that contains aluminium, an oxygen atom, and europium, heat-treating the composition in a rare gas atmosphere or in a vacuum, and contacting the heat-treated composition with a gas containing elemental fluorine.