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. 24, 2020
Filed:
Nov. 18, 2016
Applicant:
Nemoto & Co., Ltd., Suginami-ku, JP;
Inventors:
Atsunori Hashimoto, Suginami-ku, JP;
Yasushi Aoki, Suginami-ku, JP;
Assignee:
NEMOTO & CO., LTD., Suginami-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
G04B 19/32 (2006.01); C09K 11/77 (2006.01); H01J 63/02 (2006.01); H05B 33/14 (2006.01);
U.S. Cl.
CPC ...
G04B 19/32 (2013.01); C09K 11/7706 (2013.01); C09K 11/7768 (2013.01); C09K 11/7769 (2013.01); H01J 63/02 (2013.01); H05B 33/14 (2013.01);
Abstract
Provided is a reddish light emitting phosphorescent phosphor, that is efficiently excited with visible light and is chemically stable. The phosphorescent phosphor comprises a compound represented by MSiON:Yb,R, wherein M is at least one metal element selected from strontium, calcium, barium, and magnesium, and R is at least one element selected front erbium, holmium, gadolinium, praseodymium, terbium, dysprosium, neodymium, bismuth, scandium, and chromium. The phosphorescent phosphor is an excellent phosphorescent phosphor having a reddish afterglow.