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. 04, 2017
Filed:
Oct. 22, 2015
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Masami Kaneyoshi, Echizen, JP;
Kazuhiro Wataya, Echizen, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 11/61 (2006.01);
U.S. Cl.
CPC ...
C09K 11/617 (2013.01); C09K 11/616 (2013.01);
Abstract
A method for treating a Mn-activated complex fluoride phosphor is provided wherein a preliminarily-prepared red phosphor of a Mn-activated complex fluoride represented by the following formula (1):AMF:Mn  (1)wherein M represents at least one tetravalent element selected from Si, Ti, Zr, Hf, Ge and Sn, A represents at least one alkali metal selected from Li, Na, K, Rb and Cs provided that at least Na and/or K is contained, is heated in a substantially oxygen atom-free gas but containing a fluorine atom at a temperature of at least 50° C.