Patent US3149399A successfully refreshed from Google Patents.
US3149399A
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Silicon capacitor
Assignee: Sprague Electric Co
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Filing: 1962-09-25
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Granted: 1964-09-22
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Expires: 1982-09-25
Abstract
No abstract record available.
Inventors
- 👤 John L Sprague
- 👤 Otto J Wied
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:01
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/30; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/10; Y; Y10; Y10T; Y10T29/00; Y10T29/43; Y10T29/435
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF MAKING AN ELECTRICAL CAPACITOR HAVING A DIELECTRIC FILM OF SILICON DIXOIDE WHICH COMPRISESPROVIDING A BODY OF SILICON, TREATING AT LEAST ONE OF THE SURFACES OF SAID BODY TO PROVIDE A THIN SILICON DIOXIDE FILM THEREON, SUBSEQUENTLY APPLYING CAPACITOR ELECTRODES TO OPPOSED SURFACES OF SAID BODY INCLUDING SAID AT LEAST ONE SURFACE, AND ATTACHING ELECTRICAL CONNECTION TO SAID ELECTRODES.
Claim 2
Independent Claim
61 words
THE METHOD OF MAKING AN ELECTRICAL CAPACITOR HAVING A DIELECTRIC FILM OF SILICON DIXOIDE WHICH COMPRISESPROVIDING A BODY OF SILICON, TREATING AT LEAST ONE OF THE SURFACES OF SAID BODY TO PROVIDE A THIN SILICON DIOXIDE FILM THEREON, SUBSEQUENTLY APPLYING CAPACITOR ELECTRODES TO OPPOSED SURFACES OF SAID BODY INCLUDING SAID AT LEAST ONE SURFACE, AND ATTACHING ELECTRICAL CONNECTION TO SAID ELECTRODES.
References Cited (Backward Citations)
US2748325A
Cited
US2899344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |