Patent US3650839A successfully refreshed from Google Patents.
US3650839A
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US
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Fuel cell battery
Assignee: Yardney International Corp
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Filing: 1968-07-01
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Granted: 1972-03-21
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Expires: 1988-07-01
Abstract
Abstract Several fuel cells, each comprising a metal electrode in a gaspermeable envelope electrode with a catalytically effective inner surface, are juxtaposed to form a battery and are separated by solid spacers which are carried on an interposed partition or project directly from confronting outer surfaces of adjoining envelope electrodes to form channels for the admission of air or oxygen to the respective cells.
Inventors
- 👤 Maurice Lang
- 👤 Renato Di Pasquale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:25
CPC Classifications
H; H01; H01M; H01M12/00; H01M12/04; H01M12/06; H01M12/065; H01M8/00; H01M8/02; H01M8/0271; H01M8/0273; H01M8/24; H01M8/2459; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3061658A
Cited
US3432353A
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US3378406A
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US3462307A
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US3476609A
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US3442714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |