Patent US2232528A successfully refreshed from Google Patents.
Patent US3761316A successfully refreshed from Google Patents.
US3761316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell with evaporative cooling
Assignee: RTX Corp
•
Filing: 1971-03-29
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Granted: 1973-09-25
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Expires: 1991-03-29
Abstract
Abstract A FUEL CELL ASSEMBLY UTILIZING THE WASTE HEAT OF A FUEL CELL TO PROVIDE EVAPORATIVE COOLING OF THE CELL IS PROVIDED BY A HYDROPHOBIC SEPARATOR DISPOSED IN HEAT CONDUCTING RELATIONSHIP WITH THE FUEL CELL. A COOLANT LIQUID IS FED UNDER PRESSURE TO A CAVITY ON ONE SIDE OF THE HYDROPHOBIC SEPARATOR, AND AS VAPOR EVOLVES FROM THE COOLANT LIQUID, IT PASSES THROUGH THE HYDROPHOBIC SEPARATOR TO AMBIENT.
Inventors
- 👤 J Stedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:58
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/04; H01M8/04007; H01M8/04029; 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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |