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:
Aug. 06, 1991
Filed:
Jul. 24, 1989
Applicant:
Inventors:
Hiroshi Yamanoi, Kanagawa, JP;
Satoru Uedaira, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; C01F / ; C01F / ;
U.S. Cl.
CPC ...
2523 / ; 423263 ; 423600 ;
Abstract
A method of producing fine, single-phase YAG particles and fine, single-phase YAG phosphor particles. The method includes subjecting yttrium and aluminum solubilized in an aqueous alkaline solution to a heating reaction at not lower than a predetermined temperature to produce the fine single-phase YAG particles having a uniform particle size distribution. The method also includes adding terbium solubilized in an aqueous alkaline solution as an activating element to the solution of yttrium and aluminum and subjecting this solution to a heating section to produce fine single-phase YAG phosphor particles having a uniform particle size distribution.