Patent US2890394A successfully refreshed from Google Patents.
US2890394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolyte for electrolytic capacitors
Assignee: General Electric Co
•
Filing: 1955-04-13
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Granted: 1959-06-09
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Expires: 1975-04-13
Abstract
No abstract record available.
Inventors
- 👤 Donald H Stephenson
- 👤 Alfred L Jenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:04
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN ELECTRIC CAPACITOR COMPRISIG AT LEAST ONE ALUMINUM ELECTRODE HAVING A DIELESCTRIC FILM FORMED THEREON, AND AN AQUEOUS LIQUID ELECTROLYTE CONTAINING IN PERCENT BY WEIGHT 0.1-15% OF A WATER SOLUBLE AMMONIUM SALT, AND 200-2000 P.P.M. OF A SILICATE COMPOUND SELECTED
Claim 2
Dependent Claim
40 words
AN ELECTRIC CAPACITOR COMPRISIG AT LEAST ONE ALUMINUM ELECTRODE HAVING A DIELESCTRIC FILM FORMED THEREON, AND AN AQUEOUS LIQUID ELECTROLYTE CONTAINING IN PERCENT BY WEIGHT 0.1-15% OF A WATER SOLUBLE AMMONIUM SALT, AND 200-2000 P.P.M. OF A SILICATE COMPOUND SELECTED
References Cited (Backward Citations)
US1270784A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |