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:
Dec. 25, 2012
Filed:
Jul. 30, 2009
Applicants:
Yoshihisa Tsuji, Kurashiki, JP;
Kazuma Inoue, Kurashiki, JP;
Jun Takai, Kurashiki, JP;
Hideharu Iwasaki, Kurashiki, JP;
Inventors:
Yoshihisa Tsuji, Kurashiki, JP;
Kazuma Inoue, Kurashiki, JP;
Jun Takai, Kurashiki, JP;
Hideharu Iwasaki, Kurashiki, JP;
Assignee:
Kuraray Co., Ltd., Kurashiki-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 11/54 (2006.01); C09K 11/56 (2006.01); C01G 9/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a method for producing a zinc sulfide based phosphor by firing a zinc sulfide based precursor, comprising at least: a first firing step and a second firing step. Use of the method of the present invention makes it possible to provide a zinc sulfide based phosphor material suitable in the production of an EL device that shows high brightness.