US3205416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic capacitor with non-filmdissolving electrolyte
Assignee: Sprague Electric Co
•
Filing: 1960-01-14
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Granted: 1965-09-07
•
Expires: 1980-01-14
Abstract
No abstract record available.
Inventors
- 👤 Walter J Bernard
- 👤 James W Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:40
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
AN ELECTROLYTIC CAPACITOR COMPRISING A SINTERED TANTALUM ELECTRODE HAVING A TANTALUM OXIDE FILM THEREON, AND AN ALKALINE ELECTROLYTE HAVING THE ABILITY TO DISSOLVE THE TANTALUM OXIDE FILM, SAID ELECTROLYTE BEING INHIBITED AGAINST SUCH DISSOLVING ACTION BY THE ADDITION THERETO OF ABOUT 200 TO 20,000 P.P.M. OF SILICEOUS MATERIAL.
Claim 2
Dependent Claim
48 words
AN ELECTROLYTIC CAPACITOR COMPRISING A SINTERED TANTALUM ELECTRODE HAVING A TANTALUM OXIDE FILM THEREON, AND AN ALKALINE ELECTROLYTE HAVING THE ABILITY TO DISSOLVE THE TANTALUM OXIDE FILM, SAID ELECTROLYTE BEING INHIBITED AGAINST SUCH DISSOLVING ACTION BY THE ADDITION THERETO OF ABOUT 200 TO 20,000 P.P.M. OF SILICEOUS MATERIAL.
References Cited (Backward Citations)
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Cited
US1056327A
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US1748011A
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US2022500A
Cited
US2890394A
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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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |