Method of preparing storage phosphors from dedicated precursors

Details Method of preparing storage phosphors from dedicated precursors Method of preparing storage phosphors from dedicated precursors

2007-10-02

2007-10-02

Koslow, C. Melissa (Department: 1755)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

Reexamination Certificate

active

11049249

ABSTRACT:
In a method for producing CsX:Eu stimulable phosphors and screens or panels provided with said phosphors as powder phosphors or vapor deposited needle-shaped phosphors suitable for use in image forming methods for recording and reproducing images of objects made by high energy radiation, said CsX:Eu stimulable phosphors are essentially free from oxygen in their crystal structure, wherein X represents a halide selected from the group consisting of Br, Cl and combinations thereof; and wherein the method further comprises the steps of mixing CsX with a compound or combinations of compounds having as a composition CsxEuyX′x+αy, wherein the ratio of x to y exceeds a value of 0.25, wherein α≧2 and wherein X′ is a halide selected from the group consisting of Cl, Br and I and combinations thereof; heating said mixture at a temperature above 450° C.; cooling said mixture, and, optionally, annealing and recovering said CsX:Eu phosphor.

REFERENCES:
patent: 3859527 (1975-01-01), Luckey
patent: 4769549 (1988-09-01), Tsuchino et al.
patent: 5055681 (1991-10-01), Tsuchino et al.
patent: 5874744 (1999-02-01), Goodman et al.
patent: 2003/0047697 (2003-03-01), Iwabuchi et al.
patent: 2003/0104121 (2003-06-01), Leblans et al.
patent: 1 065 523 (2001-01-01), None
patent: 1 113 458 (2001-07-01), None
patent: 1 217 633 (2002-06-01), None
patent: 1 276 117 (2003-01-01), None
patent: 01/03156 (2001-01-01), None
Patent Abstracts of Japan, Publication No. 2003-201119, published Jul. 15, 2003, Fuji Phoro Film Co Ltd.
Patent Abstracts of Japan, Publication No. 06-230198, published Aug. 19, 1994, Konica Corp.
European Search Report EP 04 10 0679, Apr. 23, 2004, Doslik.

Affiliated with

Also associated with

Rating

Method of preparing storage phosphors from dedicated precursors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of preparing storage phosphors from dedicated precursors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing storage phosphors from dedicated precursors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3857638