Patent US5116786A successfully refreshed from Google Patents.
US5116786A
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Low temperature sealing glass composition
Assignee: Nippon Electric Glass Co Ltd
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Filing: 1991-11-07
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Granted: 1992-05-26
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Expires: 2011-11-07
Abstract
Abstract A low temperature sealing glass composition comprises a glass powder comprising 20 to 55 wt. % of PbO, 20 to 55 wt. % of V 2 O 5 , 5 to 40 wt. % of TeO 2 , and 0 to 8 wt. % of Al 2 O 3 or (i) 50 to 80 vol. % of a glass powder comprising 20 to 55 wt. % of PbO, 20 to 55 wt. % of V 2 O 5 , 5 to 40 wt. % of TeO 2 , and 0 to 8 wt. % of Al 2 O 3 , and (ii) 20 to 50 vol. % of low thermal expansion ceramic fillers.
Inventors
- 👤 Ichiro Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:28
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/24; C03C3/00; C03C3/12; C03C3/122
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
142 words
A low temperature sealing glass composition comprising a glass powder consisting of 25 to 50% by weight of PbO, 25 to 50% by weight of V 2 O 5 , 10 to 35% by weight of TeO 2 , 0.5 to 7% by weight of Al 2 O 3 , 0 to 10% by weight of at least one element selected from a group consisting of ZnO, Bi 2 O 3 and P 2 O 5 , and 0 to 5% by weight of at least one element selected from a group consisting of Cu 2 O, WO 3 , B 2 O 3 , SiO 2 , Mo 2 O 3 , Nb 2 O 5 , Fe 2 O 3 , ZrO 2 , SrO and BaO, the sealing glass composition having a sealing temperature of 370° C. or less.
Claim 2
Dependent Claim
142 words
A low temperature sealing glass composition comprising a glass powder consisting of 25 to 50% by weight of PbO, 25 to 50% by weight of V 2 O 5 , 10 to 35% by weight of TeO 2 , 0.5 to 7% by weight of Al 2 O 3 , 0 to 10% by weight of at least one element selected from a group consisting of ZnO, Bi 2 O 3 and P 2 O 5 , and 0 to 5% by weight of at least one element selected from a group consisting of Cu 2 O, WO 3 , B 2 O 3 , SiO 2 , Mo 2 O 3 , Nb 2 O 5 , Fe 2 O 3 , ZrO 2 , SrO and BaO, the sealing glass composition having a sealing temperature of 370° C. or less.
Claim 3
Dependent Claim
161 words
A low temperature sealing glass composition comprising (a) 50 to 80% by volume of a glass powder consisting of 25 to 50% by weight of PbO, 25 to 50% by weight of V 2 O 5 , 10 to 35% by weight of TeO 2 0.5 to 7% by weight of Al 2 O 3 , 0 to 10% by weight of at least one element selected from a group consisting of ZnO, Bi 2 O 3 and P 2 O 5 , and 0 to 5% by weight of at least one element selected from a group consisting of Cu 2 O, WO 3 , B 2 O 3 , SiO 2 , Mo 2 O 3 , Nb 2 O 5 , Fe 2 O 3 , ZrO 2 , SrO, and BaO, and (b) 20 to 50% by volume of low thermal expansion ceramic fillers, the sealing glass composition having a sealing temperature of 370° C. or less.
Claim 4
Dependent Claim
161 words
A low temperature sealing glass composition comprising (a) 50 to 80% by volume of a glass powder consisting of 25 to 50% by weight of PbO, 25 to 50% by weight of V 2 O 5 , 10 to 35% by weight of TeO 2 0.5 to 7% by weight of Al 2 O 3 , 0 to 10% by weight of at least one element selected from a group consisting of ZnO, Bi 2 O 3 and P 2 O 5 , and 0 to 5% by weight of at least one element selected from a group consisting of Cu 2 O, WO 3 , B 2 O 3 , SiO 2 , Mo 2 O 3 , Nb 2 O 5 , Fe 2 O 3 , ZrO 2 , SrO, and BaO, and (b) 20 to 50% by volume of low thermal expansion ceramic fillers, the sealing glass composition having a sealing temperature of 370° C. or less.
Claim 5
Dependent Claim
61 words
The low temperature sealing glass composition as claimed in claim 2, wherein said low thermal expansion ceramic fillers are selected from the group consisting of PbTiO 3 , Pb 0 .75.Ca 0 .25.TiO 3 , Pb.Ti 0 .7. Fe 0 .2.W 0 .1.O 3 , SiZrO 4 , Pb.Ti 0 .5.Fe 0 .25.Nb 0 .25.O 3 , and 0.99SnO 2 .0.01ZnO.
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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |