Patent US3346782A successfully refreshed from Google Patents.
US3346782A
Expired / Lapsed
US
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Electrolytic capacitor
Assignee: Sprague Electric Co
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Filing: 1964-07-01
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Granted: 1967-10-10
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Expires: 1984-07-01
Abstract
No abstract record available.
Inventors
- 👤 Robert S Alwitt
- 👤 Sidney D Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:30
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
AN ELECTROLYTIC CAPACITOR COMPRISING ELECTODES SEPARATED FROM ONE ANOTHER BY AN INERT SPACER IMPREGNATED WITH AN ELECTROLYTE CONSISTING ESSENTIALLY OF A NONAQUEOUS SOLVENT CONTAINING A SUBSTANTIALLY CONSTANT CONCENTRATION OF AN AMMONIUM SALT OF THE FORMULA R1COONH2R2R3 WHEREIN R1, R2 AND R3 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A STRAIGHT, BRANCHED, SUBSTITUTED, UNSUBSTITUTED, SATURATED AND UNSATURATED C1-C7 ALKYL GROUP AND MIXTURES THEREOF; SAID SOLVENT ALSO CONTAINING THE AMIDE DERIVATIVE OF SAID AMMONIUM SALT AND FROM ABOUT 0.1 TO ABOUT 5% OF ADDED WATER; THE CONCENTRATIONS OF THE AMIDE AND WATER BEING RELATED TO THE CONCENTRATION OF THE SALT IN ACCORDANCE WITH THE EQUATION:
Claim 2
Dependent Claim
104 words
AN ELECTROLYTIC CAPACITOR COMPRISING ELECTODES SEPARATED FROM ONE ANOTHER BY AN INERT SPACER IMPREGNATED WITH AN ELECTROLYTE CONSISTING ESSENTIALLY OF A NONAQUEOUS SOLVENT CONTAINING A SUBSTANTIALLY CONSTANT CONCENTRATION OF AN AMMONIUM SALT OF THE FORMULA R1COONH2R2R3 WHEREIN R1, R2 AND R3 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, A STRAIGHT, BRANCHED, SUBSTITUTED, UNSUBSTITUTED, SATURATED AND UNSATURATED C1-C7 ALKYL GROUP AND MIXTURES THEREOF; SAID SOLVENT ALSO CONTAINING THE AMIDE DERIVATIVE OF SAID AMMONIUM SALT AND FROM ABOUT 0.1 TO ABOUT 5% OF ADDED WATER; THE CONCENTRATIONS OF THE AMIDE AND WATER BEING RELATED TO THE CONCENTRATION OF THE SALT IN ACCORDANCE WITH THE EQUATION:
References Cited (Backward Citations)
US2165091A
Cited
US2749487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |