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:
Mar. 24, 2020
Applicant:
Denka Company Limited, Tokyo, JP;
Inventors:
Tomohiro Nomiyama, Tokyo, JP;
Yusuke Takeda, Tokyo, JP;
Marina Takamura, Tokyo, JP;
Tatsuya Okuzono, Tokyo, JP;
Masaru Miyazaki, Tokyo, JP;
Shintaro Watanabe, Tokyo, JP;
Assignee:
DENKA COMPANY LIMITED, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/77 (2006.01); C01B 21/082 (2006.01); C09K 11/02 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
C09K 11/77348 (2021.01); C01B 21/0826 (2013.01); C09K 11/02 (2013.01); H01L 33/502 (2013.01); C01P 2002/54 (2013.01); C01P 2004/03 (2013.01);
Abstract
An α-sialon phosphor particle containing Eu. At least one minute recess is formed on a surface of the α-sialon phosphor particle. The α-sialon phosphor particle is preferably produced by undergoing a raw material mixing step, a heating step, a pulverizing step, and an acid treatment step.