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. 01, 2022
Filed:
May. 22, 2020
Applicant:
Nichia Corporation, Anan, JP;
Inventors:
Tomoya Fukui, Tokushima, JP;
Tadayoshi Yanagihara, Tokushima, JP;
Assignee:
NICHIA CORPORATION, Anan, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/06 (2006.01); F21K 9/90 (2016.01); F21K 9/64 (2016.01); H01L 33/00 (2010.01);
U.S. Cl.
CPC ...
F21K 9/90 (2013.01); F21K 9/64 (2016.08); H01L 33/0062 (2013.01); H01S 5/0611 (2013.01); H01L 2933/0041 (2013.01);
Abstract
Provided is a method for producing a wavelength conversion sintered body that emits light under irradiation of excitation light. The method for producing a wavelength conversion sintered body includes: preparing a molded body obtained by molding a mixture containing an α-SiAlON fluorescent material and aluminum oxide particles and having a content of Ga of 15 ppm by mass or less; and primary calcining the molded body at a temperature in a range of 1,370° C. or more and 1,600° C. or less to obtain a first sintered body.