Patent US3057946A successfully refreshed from Google Patents.
US3057946A
Expired / Lapsed
US
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Fuel cell system
Assignee: Exide Technologies LLC
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Filing: 1959-12-31
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Granted: 1962-10-09
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Expires: 1979-12-31
Abstract
No abstract record available.
Inventors
- 👤 Eidensohn Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:05
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/22; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50; Y10; Y10S; Y10S204/00; Y10S204/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
IN COMBINATION, A FUEL CELL UTILIZING OXYGEN AS THE CATHODIC MATERIAL, SODIUM-AMALGAM AS THE ANODIC MATERIAL AND SODIUM-HYDROXIDE AS THE ELECTROLYTE, A SODIUMSODIUM AMALGAM CELL HAVING A SODIUM ANODE, A MERCURY
Claim 2
Dependent Claim
31 words
IN COMBINATION, A FUEL CELL UTILIZING OXYGEN AS THE CATHODIC MATERIAL, SODIUM-AMALGAM AS THE ANODIC MATERIAL AND SODIUM-HYDROXIDE AS THE ELECTROLYTE, A SODIUMSODIUM AMALGAM CELL HAVING A SODIUM ANODE, A MERCURY
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |