Patent US3619744A successfully refreshed from Google Patents.
US3619744A
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US
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Monolithic capacitors
Assignee: NL Industries Inc
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Filing: 1970-03-02
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Granted: 1971-11-09
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Expires: 1990-03-02
Abstract
Abstract A low-cost monolithic capacitor having a high resistance to capacity change over the temperature range from -50* to 130* C. comprises superimposed alternate layers of a fired ceramic dielectric composition containing from about 93 mol % to about 96 mol % BaTiO3, from about 2.5 mol % to about 4.75 mol % PbBi4Ti4O15 and from about 1.0 mol % to about 2.25 mol % of an additive selected from the group BaO.Nb2O5, BaO.Ta2O5, PbO.Nb2O5 and PbO.Ta2O5, and electrodes containing up to about 90% palladium, the remainder being gold and/or platinum.
Inventors
- 👤 Budd James Stephenson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:25
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1254; H01G4/1263; H01G4/005; H01G4/008; H01G4/0085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A monolithic capacitor as defined in claim 1 in which the metal portion of said electrodes contains from about 50 to about 90 percent palladium.
Claim 2
Dependent Claim
24 words
A monolithic capacitor as defined in claim 1 in which the metal portion of said electrodes contains from about 25 to 90 percent palladium.
References Cited (Backward Citations)
US3021589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |