US3223905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixed metal-ceramic capacitor
Assignee: Sprague Electric Co
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Filing: 1964-10-14
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Granted: 1965-12-14
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Expires: 1984-10-14
Abstract
No abstract record available.
Inventors
- 👤 John H Fabricius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:52
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/008; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/1227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A CAPACITOR COMPRISING A PLURALITY OF RELATIVELY NONCONDUCTING AND RELATIVELY CONDUCTING LAYERS,SAID NON-CONDUCTING LAYERS HAVING A DISCONTINUOUS SURFACE AND BEING A RELATIVELY NON-CONDUCTING, PREVIOUS, POLYCRYSTALLINE CERAMIC-METALLIC COMPOSITION SELECTED FROM THE GROUP CONSISTING OF: FROM 3 TO LESS THAN 10% BY WEIGHT PALLADIUM AND FROM 97 TO 90% BY WEIGHT BARIUM TITANATE, FROM 5 TO LESS THAN 60% BY WEIGHT CHROMIUM AND FROM 95 TO 40% BY WEIGHT SILICON MONOXIDE AND, FROM 5 TO LESS THAN 20% BY WEIGHT GOLD AND FROM 80 TO 95% BY WEIGHT MAGNESIUM FLUORIDE, SAID RELATIVELY CONDUCTING LAYERS BEING A CERAMIC-METALLIC COMOSITION SELECTED RESPECTIVELY FROM THE GROUP CONSISTING OF: FROM 10 TO 95% BY WEIGHT PALLADIUM AND FROM 90 TO 5% BY WEIGHT BARIUM TITANATE, FROM 60 TO 95% BY WEIGHT CHROMIUM AND 40 TO 5% BY WEIGHT SILICON MONOXIDE AND, FROM 20 TO 95% BY WEIGHT GOLD AND 80 TO 5% BY WEIGHT MAGNESIUM FLUORIDE, SAID RELATIVELY CONDUCTING LAYERS BEING SANDWICHED BETWEEN SAID RELATIVELY NON-CONDUCTING LAYERS AND ALTERNATE CONDUCTING LAYERS BEING CONTACTED TO TWO SEPARATE LEADS.
Claim 2
Dependent Claim
171 words
A CAPACITOR COMPRISING A PLURALITY OF RELATIVELY NONCONDUCTING AND RELATIVELY CONDUCTING LAYERS,SAID NON-CONDUCTING LAYERS HAVING A DISCONTINUOUS SURFACE AND BEING A RELATIVELY NON-CONDUCTING, PREVIOUS, POLYCRYSTALLINE CERAMIC-METALLIC COMPOSITION SELECTED FROM THE GROUP CONSISTING OF: FROM 3 TO LESS THAN 10% BY WEIGHT PALLADIUM AND FROM 97 TO 90% BY WEIGHT BARIUM TITANATE, FROM 5 TO LESS THAN 60% BY WEIGHT CHROMIUM AND FROM 95 TO 40% BY WEIGHT SILICON MONOXIDE AND, FROM 5 TO LESS THAN 20% BY WEIGHT GOLD AND FROM 80 TO 95% BY WEIGHT MAGNESIUM FLUORIDE, SAID RELATIVELY CONDUCTING LAYERS BEING A CERAMIC-METALLIC COMOSITION SELECTED RESPECTIVELY FROM THE GROUP CONSISTING OF: FROM 10 TO 95% BY WEIGHT PALLADIUM AND FROM 90 TO 5% BY WEIGHT BARIUM TITANATE, FROM 60 TO 95% BY WEIGHT CHROMIUM AND 40 TO 5% BY WEIGHT SILICON MONOXIDE AND, FROM 20 TO 95% BY WEIGHT GOLD AND 80 TO 5% BY WEIGHT MAGNESIUM FLUORIDE, SAID RELATIVELY CONDUCTING LAYERS BEING SANDWICHED BETWEEN SAID RELATIVELY NON-CONDUCTING LAYERS AND ALTERNATE CONDUCTING LAYERS BEING CONTACTED TO TWO SEPARATE LEADS.
References Cited (Backward Citations)
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US2476455A
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US2883290A
Cited
US3041511A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |