Patent US3799809A successfully refreshed from Google Patents.
US3799809A
Expired / Lapsed
US
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Fuel cell
Assignee: Licentia Patent Verwaltungs GmbH
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Filing: 1972-02-23
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Granted: 1974-03-26
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Expires: 1992-02-23
Abstract
Abstract A FUEL CELL HAVING AN ANODE AND A CATHODE EACH IN THE FORM OF A PARTICULATE FILLING, THE ANODE AND CATHODE BEING SEPARATELY CONTAINED. THE ANODE AND CATHODE ARE SOAKED BY AN ELECTROLYTE CONTINUOUS BETWEEN THE ANODE AND CATHODE, WHILE FUEL IS INTERSPERSED IN THE ANODE AND AN OXIDANT IS INTERSPERSED IN THE CATODE.
Inventors
- 👤 H Bohm
- 👤 Louis Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:16
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9091; H01M8/00; 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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |