US3347668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making fuel cell electrodes
Assignee: Union Carbide Corp
•
Filing: 1966-05-25
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Granted: 1967-10-17
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Expires: 1986-05-25
Abstract
No abstract record available.
Inventors
- 👤 Milton B Clark
- 👤 Jr William G Darland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:45
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/75; H01M4/86; H01M4/88; H01M4/8878; H01M4/8882; H01M4/8885; H01M2004/8678; H01M2004/8684; H01M2004/8689; H01M2300/00; H01M2300/0002; H01M2300/0014; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A METHOD OF MAKING FUEL CELL ELECTRODES COMPRISING THE STEPS OF MIXING TOGETHER A FINELY DIVIDED ACTIVATED CARBON AND A SUBSTANTIALLY INERT METALLIC POWDER SELECTED FROM THE GROUPS CONSISTING OF NICKEL, IRON, COBALT, TITANIUM AND SILVER, MILLING AND BLENDING SAID RESULTANT MIXTURE, COMPACTING SAID MIXTURE INTO A PLAQUE AT A PRESSURE OF FROM ABOUT 2 TONS PER SQUARE INCH TO ABOUT 6 TONS PER SQUARE INCH, SINTERING SAID COMPACTED PLAQUE IN A HYDROGEN CONTAINING ATMOSPHERE AND ALLOWING SAID PLAQUE TO BE COOLED IN SAID ATMOSPHERE.
Claim 2
Independent Claim
85 words
A METHOD OF MAKING FUEL CELL ELECTRODES COMPRISING THE STEPS OF MIXING TOGETHER A FINELY DIVIDED ACTIVATED CARBON AND A SUBSTANTIALLY INERT METALLIC POWDER SELECTED FROM THE GROUPS CONSISTING OF NICKEL, IRON, COBALT, TITANIUM AND SILVER, MILLING AND BLENDING SAID RESULTANT MIXTURE, COMPACTING SAID MIXTURE INTO A PLAQUE AT A PRESSURE OF FROM ABOUT 2 TONS PER SQUARE INCH TO ABOUT 6 TONS PER SQUARE INCH, SINTERING SAID COMPACTED PLAQUE IN A HYDROGEN CONTAINING ATMOSPHERE AND ALLOWING SAID PLAQUE TO BE COOLED IN SAID ATMOSPHERE.
References Cited (Backward Citations)
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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 |