Patent US1616894A successfully refreshed from Google Patents.
US3669752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating fuel cell
Assignee: RTX BBN Technologies Corp
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Filing: 1969-08-04
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Granted: 1972-06-13
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Expires: 1989-08-04
Abstract
Abstract ELECTROLYTIC CELL OPERATION IN WHICH THE ELECTROLYTE IS AGITATED NEAR ONE OF A PAIR OF ELECTRODES AND A BARRIER IS INTERPOSED BETWEEN THE ELECTRODES AND IS PHYSICALLY COMBINED WITH STRUCTURE OF ONE OF THE ELECTODES. THE CELL MAY HAVE AN ALKALI-METAL HYDROXIDE ELECTROLYTE MAINTAINED AT A TEMPERATURE OF AT LEAST 300 DEGREES C. TO RENDER THE ELECTROLYTE MOLTEN AND ANHYDROUS. PEROXIDE AND SUPEROXIDE MAY FUNCTION AS THE ELECTROCHEMICAL OXIDANT OF THE CELL.
Inventors
- 👤 Robert L Novack
- 👤 David M Moulton
- 👤 Walter Juda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:33
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/14; H01M8/06; H01M8/0606; H01M8/0612; H01M8/0625; 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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |