US3755723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel glasses, silver compositions and capacitors therefrom
Assignee: EIDP Inc
•
Filing: 1970-09-22
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Granted: 1973-08-28
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Expires: 1990-09-22
Abstract
Abstract The glass comprises critical proportionate amounts of PbO, Bi2O3 and B2O3. Silver compositions, adapted to be applied to and fired on a reduced titanate ceramic substrate to form thereon electrically conductive, adherent fired on films, comprise 1-10 percent of the novel glass and 90-99 percent finely divided silver dispersed in an inert vehicle. Reduced titanate capacitors are prepared from the silver compositions.
Inventors
- 👤 O Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:35
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; H01G4/0085; C; C03; C03C; C03C3/00; C03C3/12; C03C3/14; C03C3/142; H01B; H01B1/00; H01B1/14; H01B1/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
82 words
A reduced titanate capacitor comprising: a. a reduced titanate ceramic substrate b. a thin dielectric layer of oxidized titanate adherent to (a) and c. an electrically conductive silver-containing film adherent to (b), obtained by firing onto a reduced titanate ceramic substrate a silver composition comprising a solids content consisting essentially of, by weight, 90-99 percent finely divided silver and 1-10 percent of a finely divided glass frit, said glass frit consisting essentially of, by weight, 25-50% PbO, 50-75% Bi2O3 and 1-10% B2O3.
Claim 2
Dependent Claim
28 words
A capacitor according to claim 2 wherein said silver composition consists essentially of, by weight, 30-90% of said solids content dispersed in 70-10% of an inert liquid vehicle.
Claim 3
Dependent Claim
20 words
A capacitor according to claim 2 wherein said glass frit consists essentially of 30-45% PbO, 55-70% Bi2O3 and 2-8% B2O3.
Claim 4
Dependent Claim
19 words
A capacitor according to claim 2 wherein said silver composition has been fired on opposite faces of substrate (a).
Claim 5
Dependent Claim
20 words
A capacitor according to claim 2 wherein said glass frit consists essentially of 27-47% PbO, 50-70% Bi2O3 and 2-8% B2O3.
References Cited (Backward Citations)
US2588920A
Cited
US2633543A
Cited
US2822279A
Cited
US3305369A
Cited
GB1019709A
Cited
US3480566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |