US3682704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Redox fuel cell regenerated with sugar
Assignee: Electrocell Ltd
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Filing: 1970-02-05
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Granted: 1972-08-08
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Expires: 1990-02-05
Abstract
Abstract AN ELECTROCHEMICAL CELL HAS AN ANODIC HALF-CELL WHICH CONTAINS AN OXIDISABLE ORGANIC FUEL, SUCH AS A SUGAR, AND A REDOX COUPLE, SUCH AS SILVER-ARGENTOUS, THE CELL GENERATING A CURRENT ON INTERACTION OF THE FUEL AND THE REDOX COUPLE WHEREBY THE FUEL ALONE IS CONSUMED.
Inventors
- 👤 Richard Mackay Keefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:11
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/20; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |