US3787219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
CaTiO{11 -CRYSTALLIZABLE GLASS DIELECTRIC COMPOSITIONS
Assignee: EIDP Inc
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Filing: 1972-09-22
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Granted: 1974-01-22
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Expires: 1992-09-22
Abstract
Abstract Powder compositions useful for producing dielectric layers in electronic devices at firing temperatures below 1000*C. The resultant dielectrics exhibit high Q (above 700) and reduced, or even negative, TCC. The compositions comprise 1-40% by weight of calcium titanate and 99-60% of certain lead-free crystallizable glasses and are optionally dispersed in an inert liquid vehicle.
Inventors
- 👤 R Amin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/0036; H; H01; H01B; H01B3/00; H01B3/02; H01B3/08; H01B3/087; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/129
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
25 words
A composition according to claim 1 dispersed in an inert liquid vehicle, there being 0.4-9 parts of said composition per part of vehicle, by weight.
Claim 2
Dependent Claim
32 words
A composition according to claim 1 wherein the glass frit is of, by weight, 30-33% SiO2 8-10% TiO2 10-12% Al2O3 12-26% BaO 10-26% ZnO 6-10% CaO 2-8% B2O3 0-2% MgO 0-4% Bi2O3
Claim 3
Dependent Claim
25 words
A composition according to claim 3 dispersed in an inert liquid vehicle, there being 0.4-9 parts of said composition per part of vehicle, by weight.
Claim 4
Dependent Claim
16 words
A composition according to claim 1 of 15-40 percent calcium titanate and 85-60 percent glass frit.
Claim 5
Dependent Claim
15 words
A composition according to claim 3 15-40 percent calcium titanate and 85-60 percent glass frit.
Claim 6
Dependent Claim
34 words
A dense, high Q, dielectric useful in electronic devices which is the fired composition of claim 1 and which comprises a glassy matrix having dispersed therein particles of calcium titanate and crystals of celsian.
Claim 7
Dependent Claim
34 words
A dense, high Q, dielectric useful in electronic devices which is the fired composition of claim 3 and which comprises a glassy matrix having dispersed therein particles of calcium titanate and crystals of celsian.
Claim 8
Dependent Claim
34 words
A dense, high Q, dielectric useful in electronic devices which is the fired composition of claim 5 and which comprises a glassy matrix having dispersed therein particles of calcium titanate and crystals of celsian.
Claim 9
Dependent Claim
34 words
A dense, high Q, dielectric useful in electronic devices which is the fired composition of claim 6 and which comprises a glassy matrix having dispersed therein particles of calcium titanate and crystals of celsian.
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |