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:
Mar. 23, 1999
Filed:
Jan. 12, 1998
Applicant:
Inventors:
Assignees:
Korean Information & Communication Co., Ltd., Seoul, KR;
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29B / ; C09K / ;
U.S. Cl.
CPC ...
264 12 ; 264 13 ; 264 21 ;
Abstract
A method for preparing spherical phosphor particles is disclosed, wherein a precursor solution of phosphors is decomposed to solid particles by aerosol pyrolysis and rapid cooling and subsequently the solid particles are heat-treated at a temperature of 1000.degree. C. to 1600.degree. C. for a period of 1 hour to 9 hours.