Patent US3647641A successfully refreshed from Google Patents.
US3647641A
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Reactant sensor and method of using same
Assignee: DS MEDICAL PRODUCTS Co A CORP
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Filing: 1970-10-26
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Granted: 1972-03-07
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Expires: 1990-10-26
Abstract
Abstract A REACTANT SENSOR IS DESCRIBED WHICH HAS A GAS DIFFUSION CATHODE, AN ANODE SPACED FROM THE CATHODE, THE ANODE WITH A CATALYTIC COATING OF PLATINUM, PALLADIUM, AND A THIRD LESS NOBLE METAL ON A SUBSTRATE THE CATHODE BEING LARGER THAN THE ANODE IN A GEOMETRIC AREA RATIO OF AT LEAST 3 TO 1, AND A CURRENT METER CONNECTED ACROSS THE CATHODE AND ANODE.
Inventors
- 👤 Willard T Grubb
- 👤 Robert A Macur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:08
CPC Classifications
H; H01; H01M; H01M8/00; H01M8/08; G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; 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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |