Patent US2916680A successfully refreshed from Google Patents.
US2916680A
Expired / Lapsed
US
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Dielectric compositions
Assignee: Sprague Electric Co
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Filing: 1955-12-07
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Granted: 1959-12-08
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Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 Sidney D Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:35
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/20; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01G4/221
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
AN ELECTRICAL CAPACITOR COMPRISING AT LEAST TWO ELECTRODES, SEPARATED BY A POROUS PAPER DIELECTRIC SPACER, SAID DIELECTRIC SPACER BEING SUBSTANTIALLY FULLY IMPREGNATED WITH A PRINCIPAL DIELECTRIC SELECTED FROM THE CLASS OF HYDROCARBONS AND RING-CHLORINATED AROMATIC HYDROCARBONS, ADMIXED WITH FROM ABOUT 0.1% TO ABOUT 5% OF A POLYMERIC FORM OF INHIBITOR COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE POLYMERIC COMPOUND CONTAINING THE AZO GROUP AND POLYMERIC COMPOUNDS HAVING QUINONE
Claim 2
Dependent Claim
69 words
AN ELECTRICAL CAPACITOR COMPRISING AT LEAST TWO ELECTRODES, SEPARATED BY A POROUS PAPER DIELECTRIC SPACER, SAID DIELECTRIC SPACER BEING SUBSTANTIALLY FULLY IMPREGNATED WITH A PRINCIPAL DIELECTRIC SELECTED FROM THE CLASS OF HYDROCARBONS AND RING-CHLORINATED AROMATIC HYDROCARBONS, ADMIXED WITH FROM ABOUT 0.1% TO ABOUT 5% OF A POLYMERIC FORM OF INHIBITOR COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE POLYMERIC COMPOUND CONTAINING THE AZO GROUP AND POLYMERIC COMPOUNDS HAVING QUINONE
References Cited (Backward Citations)
US1819585A
Cited
US2594873A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |