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:
Apr. 21, 2015
Filed:
Sep. 25, 2012
Applicant:
Ube Material Industries, Ltd., Ube-shi, Yamaguchi, JP;
Inventors:
Kouichi Fukuda, Ube, JP;
Jin Amagai, Ube, JP;
Seiji Noguchi, Ube, JP;
Toru Inagaki, Ube, JP;
Masaki Tanaka, Ube, JP;
Assignee:
Ube Material Industries, Ltd., Ube-shi, Yamaguchi, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K 11/55 (2006.01); C09K 11/59 (2006.01); C09K 11/77 (2006.01); H01L 33/50 (2010.01);
U.S. Cl.
CPC ...
C09K 11/7734 (2013.01); H01L 33/502 (2013.01);
Abstract
The emission strength of a light released from a blue light-emitting phosphor having a merwinite crystal structure and an elemental formula of (Sr,Ca)MgSiOactivated with Eu in which a molar ratio of Sr and Ca is in the range of 1:0.10 to 1:0.30 is stable in a wide temperature range.