Patent EP0095741A1 successfully refreshed from Google Patents.
EP0095741A1
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Phosphor
Assignee: Fujifilm Holdings Corp
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Filing: 1983-05-26
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Granted: —
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Expires: 2003-05-26
Abstract
Abstract A divalent europium activated barium fluorohalide phosphor wherein a portion of barium is replaced with an alkali metal and a trivalent metal, having the formula: in which M is at least one alkali metal selected from the group consisting of Li, Na, K, Rb and Cs; L is at least one trivalent metal selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga, In and TI; X is at least one halogen selected from the group consisting of Cl, Br and I; and x and y are numbers satisfying the conditions of 10 -2 ≦x≦0.5 and 0<y≦0.1, respectively.
Inventors
- 👤 Chiyuki C/O Fuji Photo Film Co. Ltd. Umemoto
- 👤 Kenji C/O Fuji Photo Film Co. Ltd. Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 04:10
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7783; C09K11/779; C09K11/7791; C09K11/7728; C09K11/7732; C09K11/7733
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
A divalent europium activated barium fluorohalide phosphor wherein a portion of barium is replaced with an alkali metal and a trivalent metal, having the formula: in which M is at least one alkali metal selected from the group consisting of Li, Na, K, Rb and Cs; L is at least one trivalent metal selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga, In and Tl; X is at least one halogen selected from the group consisting of Cl, Br and I; and x and y are numbers satisfying the conditions of 10 -2 ≦x≦0.5 and 0<y≦0.1, respectively.
Claim 2
Dependent Claim
112 words
A divalent europium activated barium fluorohalide phosphor wherein a portion of barium is replaced with an alkali metal and a trivalent metal, having the formula: in which M is at least one alkali metal selected from the group consisting of Li, Na, K, Rb and Cs; L is at least one trivalent metal selected from the group consisting of Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Al, Ga, In and Tl; X is at least one halogen selected from the group consisting of Cl, Br and I; and x and y are numbers satisfying the conditions of 10 -2 ≦x≦0.5 and 0<y≦0.1, respectively.
Claim 3
Dependent Claim
28 words
The phosphor as claimed in Claim 1, in which x and y are numbers satisfying the conditions of 10 -2 ≦x≦0.2 and 10 -5 ≦y≦10 -2 , respectively.
Claim 4
Dependent Claim
29 words
The phosphor as claimed in Claim 1 or Claim 2, in which M is at least one alkali metal selected from the group consisting of Li, Na and Cs.
Claim 5
Dependent Claim
31 words
The phosphor as claimed in Claim 1 or Claim 2, in which L is at least one trivalent metal selected from the group consisting of Sc, Y, La, Gd and Lu.
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