Patent US3020327A successfully refreshed from Google Patents.
US3020327A
Expired / Lapsed
US
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Fuel cells and their electrodes
Assignee: Exide Technologies LLC
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Filing: 1959-08-11
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Granted: 1962-02-06
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Expires: 1979-08-11
Abstract
No abstract record available.
Inventors
- 👤 Ruetschi Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:17
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/90; H01M4/9041; H01M4/8605; H01M4/8621; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A FUEL CELL ELECTRODE COMPRISING A POROUS MATRIX AT LEAST THE PORO SURFACES OF SAID MATRIX CONSISTING OF A NICKEL-SILVER ALLOY IN WHICH NICKEL IS PRESENT IN AN AMOUNT BY WEIGHT OF THE ALLOY OF FROM 1/% TO 50% AND SILVER IS PRESENT IN AN AMOUNT BY WEIGHT OF THE ALLOY OF FROM 90% TO 50%.
Claim 2
Dependent Claim
56 words
A FUEL CELL ELECTRODE COMPRISING A POROUS MATRIX AT LEAST THE PORO SURFACES OF SAID MATRIX CONSISTING OF A NICKEL-SILVER ALLOY IN WHICH NICKEL IS PRESENT IN AN AMOUNT BY WEIGHT OF THE ALLOY OF FROM 1/% TO 50% AND SILVER IS PRESENT IN AN AMOUNT BY WEIGHT OF THE ALLOY OF FROM 90% TO 50%.
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) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |