US5108959A
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Terbium activated borate luminescent glasses coactivated with gadolinium oxide
Assignee: COLLIMATED HOLES Inc
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Filing: 1990-11-16
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Granted: 1992-04-28
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Expires: 2010-11-16
Abstract
Abstract This invention relates to terbium activated borate luminescent glasses exhibiting enhanced x-ray absorption characteristics and conversion of absorbed energy into green light due to incorporation therein of gadolinium oxide.
Inventors
- 👤 Robert A. Buchanan
- 👤 Clifford Bueno
- 👤 Harold Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:00
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C3/15; C03C4/00; C03C4/08; C03C4/087; C03C4/12; C09; C09K; C09K11/00; C09K11/08; C09K11/77; C09K11/7766; C09K11/778; G; G21; G21K; G21K4/00
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
48 words
A luminescent, terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 and up to 2 percent Al 2 O 3 .
Claim 2
Dependent Claim
48 words
A luminescent, terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 and up to 2 percent Al 2 O 3 .
Claim 3
Dependent Claim
25 words
A glass in accordance with claim 1 wherein said Tb 2 O 3 is present, in mole percent oxide, from about 1 to 3 percent.
Claim 4
Dependent Claim
25 words
A glass in accordance with claim 1 wherein said Gd 2 O 3 is present, in mole percent oxide, from about 12 to 14 percent.
Claim 5
Dependent Claim
105 words
A luminescent, terbium activated borate glass containing, by mole percent oxide, 64 to 72 percent B 2 O 3 ; 0 to 3 percent SiO 2 ; a total MO content no greater than 18 percent where MO consists of 8 to 18 percent CaO and 0 to 9 percent BaO; a total Re 2 O 3 content no greater than 20 percent where Re 2 O 3 consists of 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd2O 3 and 0 to 3 percent La 2 O 3 ; and up to 2 percent Al 2 O 3 .
Claim 6
Dependent Claim
105 words
A luminescent, terbium activated borate glass containing, by mole percent oxide, 64 to 72 percent B 2 O 3 ; 0 to 3 percent SiO 2 ; a total MO content no greater than 18 percent where MO consists of 8 to 18 percent CaO and 0 to 9 percent BaO; a total Re 2 O 3 content no greater than 20 percent where Re 2 O 3 consists of 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd2O 3 and 0 to 3 percent La 2 O 3 ; and up to 2 percent Al 2 O 3 .
Claim 7
Dependent Claim
25 words
A glass in accordance with claim 4 wherein said Tb 2 O 3 is present, in mole percent oxide, from about 1 to 3 percent.
Claim 8
Dependent Claim
25 words
A glass in accordance with claim 4 wherein said Gd 2 O 3 is present, in mole percent oxide, from about 12 to 14 percent.
Claim 9
Dependent Claim
55 words
An x-ray conversion screen consisting essentially of a luminescent, terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 ; 9 to 15 percent Gd 2 O 3 and up to 2 percent Al 2 O 3 .
Claim 10
Dependent Claim
55 words
An x-ray conversion screen consisting essentially of a luminescent, terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 ; 9 to 15 percent Gd 2 O 3 and up to 2 percent Al 2 O 3 .
Claim 11
Dependent Claim
115 words
An x-ray conversion screen consisting essentially of a luminescent, terbium activated borate glass containing, by mole percent oxide, 64 to 72 percent B 2 O 3 ; 0 to 3 percent SiO 2 ; a total MO content no greater than 18 percent where MO consists of 8 to 18 percent CaO and 0 to 9 percent BaO; and a total Re 2 O 3 content no greater than 20 percent where Re 2 O 3 consists of 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 ; 0 to 3 percent La 2 O 3 ; and up to 2 percent Al 2 O 3 .
Claim 12
Dependent Claim
115 words
An x-ray conversion screen consisting essentially of a luminescent, terbium activated borate glass containing, by mole percent oxide, 64 to 72 percent B 2 O 3 ; 0 to 3 percent SiO 2 ; a total MO content no greater than 18 percent where MO consists of 8 to 18 percent CaO and 0 to 9 percent BaO; and a total Re 2 O 3 content no greater than 20 percent where Re 2 O 3 consists of 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 ; 0 to 3 percent La 2 O 3 ; and up to 2 percent Al 2 O 3 .
Claim 13
Dependent Claim
61 words
An x-ray conversion screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 ; and up to 2 percent Al 2 O 3 .
Claim 14
Dependent Claim
61 words
An x-ray conversion screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 ; and up to 2 percent Al 2 O 3 .
Claim 15
Dependent Claim
120 words
An x-ray conversion screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, by mole percent oxide, 64 to 72 percent B 2 O 3 ; 0 to 3 percent SiO 2 ; a total MO content no greater than 18 percent where MO consists of 8 to 18 percent BaO and 0 to 9 percent BaO; a total Re 2 O 3 content no greater than 20 percent where Re 2 O 3 consists of 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 and 0 to 3 percent La 2 O 3 ; and up to a 2 percent Al 2 O 3 .
Claim 16
Dependent Claim
120 words
An x-ray conversion screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, by mole percent oxide, 64 to 72 percent B 2 O 3 ; 0 to 3 percent SiO 2 ; a total MO content no greater than 18 percent where MO consists of 8 to 18 percent BaO and 0 to 9 percent BaO; a total Re 2 O 3 content no greater than 20 percent where Re 2 O 3 consists of 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 and 0 to 3 percent La 2 O 3 ; and up to a 2 percent Al 2 O 3 .
Claim 17
Dependent Claim
65 words
In an x-ray intensifier tube, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 ; 9 to 15 percent Gd 2 O 3 ; and up to 2 percent Al 2 O 3 .
Claim 18
Dependent Claim
65 words
In an x-ray intensifier tube, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 ; 9 to 15 percent Gd 2 O 3 ; and up to 2 percent Al 2 O 3 .
Claim 19
Dependent Claim
30 words
In an x-ray intensifier tube, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass having a composition in accordance with claim 10.
Claim 20
Dependent Claim
66 words
In an x-ray radiographic film cassette, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 ; 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 21
Dependent Claim
66 words
In an x-ray radiographic film cassette, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 ; 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 22
Dependent Claim
31 words
In an x-ray radiographic film cassette, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass having a composition in accordance with claim 10.
Claim 23
Dependent Claim
60 words
In an x-ray radiographic film cassette, an input screen consisting of essentially of ground luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 24
Dependent Claim
60 words
In an x-ray radiographic film cassette, an input screen consisting of essentially of ground luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 25
Dependent Claim
26 words
In an x-ray radiographic film cassette, an input screen consisting essentially of ground luminescent terbium activated borate glass having a composition in accordance with claim 8.
Claim 26
Dependent Claim
63 words
In x-ray electronic radiography systems, an input glass x-ray conversion screen consisting essentially of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 27
Dependent Claim
63 words
In x-ray electronic radiography systems, an input glass x-ray conversion screen consisting essentially of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 28
Dependent Claim
28 words
In x-ray electronic radiography systems, an input glass x-ray conversion screen consisting essentially of a luminescent terbium activated borate glass having a composition in accordance with claim 8.
Claim 29
Dependent Claim
58 words
In fluorescent lighting tubes, a luminescent material consisting essentially of ground luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 30
Dependent Claim
58 words
In fluorescent lighting tubes, a luminescent material consisting essentially of ground luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 31
Dependent Claim
24 words
In fluorescent lighting tubes, a luminescent material consisting essentially of a luminescent terbium activated borate glass having a composition in accordance with claim 8.
Claim 32
Dependent Claim
56 words
A thermal neutron conversion screen consisting essentially of a luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 33
Dependent Claim
56 words
A thermal neutron conversion screen consisting essentially of a luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 34
Dependent Claim
61 words
A thermal neutron conversion screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent B 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 35
Dependent Claim
61 words
A thermal neutron conversion screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent B 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 36
Dependent Claim
65 words
In a thermal neutron intensifier tube, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 37
Dependent Claim
65 words
In a thermal neutron intensifier tube, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 38
Dependent Claim
67 words
In a thermal neutron radiographic film cassette, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 39
Dependent Claim
67 words
In a thermal neutron radiographic film cassette, an input screen consisting essentially of fiber optic scintillating plates of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 40
Dependent Claim
65 words
In thermal neutron electronic radiographic systems, an input glass thermal neutron conversion screen consisting essentially of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 41
Dependent Claim
65 words
In thermal neutron electronic radiographic systems, an input glass thermal neutron conversion screen consisting essentially of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 .
Claim 42
Independent Claim
92 words
A method of converting incident radiation into radiation in the visible spectrum comprising the steps of (a) positioning in said incident radiation field a luminescent terbium activated borate luminescent glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 , and (b) irradiating said glass with said incident radiation, thereby to convert said incident radiation into said visible radiation.
Claim 43
Independent Claim
92 words
A method of converting incident radiation into radiation in the visible spectrum comprising the steps of (a) positioning in said incident radiation field a luminescent terbium activated borate luminescent glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 , and (b) irradiating said glass with said incident radiation, thereby to convert said incident radiation into said visible radiation.
Claim 44
Independent Claim
97 words
A method of converting incident radiation into radiation in the visible spectrum comprising the steps of (a) positioning in said incident radiation field a fiber optic scintillating plate of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 , and (b) irradiating said plate with said incident radiation, thereby to convert said incident radiation into said visible radiation.
Claim 45
Independent Claim
97 words
A method of converting incident radiation into radiation in the visible spectrum comprising the steps of (a) positioning in said incident radiation field a fiber optic scintillating plate of a luminescent terbium activated borate glass containing, in mole percent oxide, about 64 to 72 percent B 2 O 3 , 0.5 to 5 percent Tb 2 O 3 , 9 to 15 percent Gd 2 O 3 , and up to 2 percent Al 2 O 3 , and (b) irradiating said plate with said incident radiation, thereby to convert said incident radiation into said visible radiation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-04-28 | 1995-10-28 | 1996-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-28 | 1999-10-28 | 2000-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-28 | 2003-10-28 | 2004-04-28 | $7700.00 | Window Closed / Lapsed |