US3302071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ml smn
Assignee: —
•
Filing: —
•
Granted: 1967-01-31
•
Expires: 1984-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:06
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; H01G9/025; H01G9/028; H01G9/035; H01G9/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN ELECTROLYTIC CAPACITOR COMPRISING A PAIR OF ELECTRODES AT LEAST ONE OF WHICH IS COMPOSED OF A FILM-FORMING METAL HAVING A DIELECTRIC FILM THEREON AND AN ELECTROLYTE COMPRISING A MIXTURE IN PERCENT BY WEIGHT OF 8525% BUTROLACTONE AND 15-75% N-METHYLPYRROLIDONE AND HAVING A BOILING POINT OF ABOUT 2200%C. AND AN APPARENT FREEZING POINT BELOW -55%C., AND AN IONOGEN DISSOLVED THEREIN IN AN AMOUNT TO PROVIDE A RESISTIVITY FOR THE ELECTROLYTE OF AT LEAST ABOUT 10 OHM-CENTIMETERS AT ROOM TEMPERATURE.
Claim 2
Dependent Claim
79 words
AN ELECTROLYTIC CAPACITOR COMPRISING A PAIR OF ELECTRODES AT LEAST ONE OF WHICH IS COMPOSED OF A FILM-FORMING METAL HAVING A DIELECTRIC FILM THEREON AND AN ELECTROLYTE COMPRISING A MIXTURE IN PERCENT BY WEIGHT OF 8525% BUTROLACTONE AND 15-75% N-METHYLPYRROLIDONE AND HAVING A BOILING POINT OF ABOUT 2200%C. AND AN APPARENT FREEZING POINT BELOW -55%C., AND AN IONOGEN DISSOLVED THEREIN IN AN AMOUNT TO PROVIDE A RESISTIVITY FOR THE ELECTROLYTE OF AT LEAST ABOUT 10 OHM-CENTIMETERS AT ROOM TEMPERATURE.
References Cited (Backward Citations)
US2089685A
Cited
US2089683A
Cited
US2809958A
Cited
US2965690A
Cited
US3065389A
Cited
US3085931A
Cited
US3136780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |