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. 11, 2003
Filed:
Dec. 11, 2000
Hideaki Wakamatsu, Tokyo, JP;
Haruhiko Masutomi, Tokyo, JP;
Yasushi Nakano, Tokyo, JP;
Akihiro Maezawa, Tokyo, JP;
Hiroto Itoh, Tokyo, JP;
Isao Kobayashi, Tokyo, JP;
Sadatoshi Nishibuchi, Tokyo, JP;
Konica Corporation, Tokyo, JP;
Abstract
A method for preparing a rare earth activated alkaline earth metal fluorohalide stimulable phosphor represented by formula (Ba M )FBr I :aM , bLn, cO is discloded, comprising the steps of (a) preparing an aqueous mother liquor containing BaX of not less than 2.0 mol/l and a halide of Ln, (b) adding an aqueous solution containing an inorganic fluoride of not less than 5 mol/l to the mother liquor while maintaining a temperature of at least 50° C. to form a crystalline precipitate of a precursor of the stimulable phosphor, (c) separating the precipitate of the precursor from the mother liquor, and (d) calcining the separated precipitate.