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:
Jul. 18, 2023
Filed:
Nov. 07, 2019
Denka Company Limited, Tokyo, JP;
Manabu Kobayashi, Omuta, JP;
Keita Kobayashi, Omuta, JP;
Tomohiro Nomiyama, Omuta, JP;
Shintaro Watanabe, Tokyo, JP;
DENKA COMPANY LIMITED, Tokyo, JP;
Abstract
A β-sialon phosphor that is a solid solution of europium, in which Dis 7.0 μm or more and 20.0 μm or less and (D−D)/Dis 0.60 or less, where Dis a 50% area diameter of primary particles of the β-sialon phosphor, and Dis a 10% area diameter of the primary particles of the β-sialon phosphor. Primary particles are defined as single-crystal particles distinguished for each crystal orientation by identifying the crystal orientation of individual particles of the β-sialon phosphor by an electron backscatter diffraction image method. Dand Dare obtained by image analysis of the cross-sectional area of the primary particles.