Patent US3676222A successfully refreshed from Google Patents.
US3676222A
Expired / Lapsed
US
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Conductive carbon membrane electrode
Assignee: Monsanto Research Corp
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Filing: 1970-09-10
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Granted: 1972-07-11
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Expires: 1990-09-10
Abstract
Abstract NOVEL MEMBRANE ELECTRODES OF PARTICULATE ELECTRODE MATERIAL COMPRISING CONDUCTIVE HYDROPHOBIC CARBON AND ELECTRICAL POTENTIAL ACROSS THE ELECTRODES ON EACH SIDE THEREOF, THE SPECFIC GAS MAY BE PUMPED THROUGH THE MEMBRANE AGAINST A CONCENTRATION GRADIENT. SIMILARLY, WHILE A CONCENTRATION GRADIENT IN THE SPECIFIC GAS EXISTS ACROSS THE STRUCTURE DESCRIBED, AN ELECTRICAL POTENTIAL DIFFERENCE DEVELOPS ACROSS THE FILM AND THE ELECTRODES.
Inventors
- 👤 Max C Deibert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:46
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/86; H01M4/96; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |