US3347708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cell battery containing metal coated carbon electrodes
Assignee: Union Carbide Corp
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Filing: 1965-06-15
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Granted: 1967-10-17
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Expires: 1985-06-15
Abstract
No abstract record available.
Inventors
- 👤 George R Drengler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:25
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A FUEL CELL BATTERY COMPRISING A PLURALITY OF PAIRS OF SUBSTANTIALY FLAT, GAS PERMEABLE CARBON ELECTRODES, EACH ELECTRODE HAVING AN ELECTROLYTE FACE AND A GAS FACE; THE GAS FACES OF SAID ELECTRODES BEING ARRANGED IN JUXTAPOSITION WITH A GAS IMPERVIOUS METAL CONDUCTOR ELEMENT THEREBETWEEN; SAID METAL CONDUCTOR ELEMENT BEING IN ELECTRICAL CONTACT WITH SAID GAS FACES AND DEFINING GAS SPACES BETWEEN SAID GAS FACES AND THE SURFACES OF SAID METAL CONDUCTOR ELEMENT, SAID ELECTRODES HAVING ON SAID GAS FACES THEREOF A GAS PERMEABLE DISCONTINUOUS METAL COATING HAVING A PLURALITY OF PROTUBERANCES IN LOW ELECTRICAL RESISTANCE CONTACT WITH SAID METAL CONDUCTOR ELEMENT; SAID METAL COATING BEING APPLIED TO SAID ELECTRODE SURFACES BY MOLTEN METAL SPRAY TECHNIQUES, AND SAID COATING BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 0.009 GRAM AND ABOUT 1.2 GRAMS OF METAL PER SQUARE INCH OF ELECTRODE SURFACE.
Claim 2
Dependent Claim
139 words
A FUEL CELL BATTERY COMPRISING A PLURALITY OF PAIRS OF SUBSTANTIALY FLAT, GAS PERMEABLE CARBON ELECTRODES, EACH ELECTRODE HAVING AN ELECTROLYTE FACE AND A GAS FACE; THE GAS FACES OF SAID ELECTRODES BEING ARRANGED IN JUXTAPOSITION WITH A GAS IMPERVIOUS METAL CONDUCTOR ELEMENT THEREBETWEEN; SAID METAL CONDUCTOR ELEMENT BEING IN ELECTRICAL CONTACT WITH SAID GAS FACES AND DEFINING GAS SPACES BETWEEN SAID GAS FACES AND THE SURFACES OF SAID METAL CONDUCTOR ELEMENT, SAID ELECTRODES HAVING ON SAID GAS FACES THEREOF A GAS PERMEABLE DISCONTINUOUS METAL COATING HAVING A PLURALITY OF PROTUBERANCES IN LOW ELECTRICAL RESISTANCE CONTACT WITH SAID METAL CONDUCTOR ELEMENT; SAID METAL COATING BEING APPLIED TO SAID ELECTRODE SURFACES BY MOLTEN METAL SPRAY TECHNIQUES, AND SAID COATING BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 0.009 GRAM AND ABOUT 1.2 GRAMS OF METAL PER SQUARE INCH OF ELECTRODE SURFACE.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |