Patent US3531693A successfully refreshed from Google Patents.
US3531693A
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US
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Electrolytic capacitor with ruthenium metal cathode surface
Assignee: General Electric Co
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Filing: 1968-06-11
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Granted: 1970-09-29
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Expires: 1988-06-11
Abstract
No abstract record available.
Inventors
- 👤 Joel B Buice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:26
CPC Classifications
H; H01; H01G; H01G9/00; H01G9/004; H01G9/04; H01G9/042; H01G9/0425; H01G9/08; H01G9/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2923866A
Cited
US2871425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-28 | 1974-03-30 | 1974-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-28 | 1978-03-30 | 1978-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-28 | 1982-03-30 | 1982-09-29 | $7700.00 | Window Closed / Lapsed |