US3222224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodes for fuel cells
Assignee: Shell USA Inc
•
Filing: 1962-05-08
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Granted: 1965-12-07
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Expires: 1982-05-08
Abstract
No abstract record available.
Inventors
- 👤 Williams Keith Rolls
- 👤 Short Richard Terence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:21
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN ELECTRODE FOR USE IN A FUEL CELL, SAID ELECTRODE COMPRISING: A BASE COMPOSED OF POROUS NON-CONDUCTIVE PLASTIC MATERIAL HAVING PORES OF AVERAGE DIAMETERS OF FROM 1/2 TO 25 U WITH A POROUS ELECTRICALLY CONDUCTIVE METAL LAYER THEREON HAVING A THICKNESS OF FROM 0.03 TO 50U AND A LAYER OF CARBON BLACK CARRIED BY SAID BASE AND IN CONTACT WITH SAID CONDUCTIVE LAYER, THE SAID PORES PROVIDING PASSAGEWAYS WHEREBY ELECTROLYTE IN CONTACT WITH THE PLASTIC MATERIAL CAN PASS THROUGH SAID PLASTIC MATERIAL AND THE SAID LAYERS THEREON AND CONTACT GAS FROM THE OTHER SIDE OF THE ELECTRODE IN THE CARBON BLACK LAYER.
Claim 2
Dependent Claim
102 words
AN ELECTRODE FOR USE IN A FUEL CELL, SAID ELECTRODE COMPRISING: A BASE COMPOSED OF POROUS NON-CONDUCTIVE PLASTIC MATERIAL HAVING PORES OF AVERAGE DIAMETERS OF FROM 1/2 TO 25 U WITH A POROUS ELECTRICALLY CONDUCTIVE METAL LAYER THEREON HAVING A THICKNESS OF FROM 0.03 TO 50U AND A LAYER OF CARBON BLACK CARRIED BY SAID BASE AND IN CONTACT WITH SAID CONDUCTIVE LAYER, THE SAID PORES PROVIDING PASSAGEWAYS WHEREBY ELECTROLYTE IN CONTACT WITH THE PLASTIC MATERIAL CAN PASS THROUGH SAID PLASTIC MATERIAL AND THE SAID LAYERS THEREON AND CONTACT GAS FROM THE OTHER SIDE OF THE ELECTRODE IN THE CARBON BLACK LAYER.
References Cited (Backward Citations)
US409365A
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US2384463A
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FR60901E
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US2708683A
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GB830922A
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FR1127786A
Cited
US2860175A
Cited
US2947797A
Cited
US3116170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |