US3247452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas sensing device with a gasdepolarizable electrode
Assignee: Union Carbide Corp
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Filing: 1964-08-10
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Granted: 1966-04-19
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Expires: 1984-08-10
Abstract
No abstract record available.
Inventors
- 👤 Karl V Kordesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A GAS-SENSING DEVICE WHICH COMPRISE A CONTAINER, AN ELECTROLYTE WITHIN SAID CONTAINER, A BIASING ELECTRODE, AND A PAIR OF GAS-DEPOLARIZABLE, POROUS, CATALYZED, ACTIVATED CARBON ELECTRODES IN ELECTROCHEMICAL CONTACT WITH SAID ELECTROLYTE AND HAVING ONE SIDE EXPOSED TO A DEPOLARIZING GAS; ONE OF SAID DEPOLARIZABLE ELECTRODES BEING ELECTRICALLY CONNECTED TO AND FORMING A MEASURING CELL IN CONJUCTION WITH SAID BIASING ELECTRODE AND SAID ELECTROLYTE, AND ANOTHER OF SAID GAS-DEPOLARIZABLE ELECTRODES BEING ELECTRICALLY CONNECTED TO AND FORMING A COMPENSATING CELL IN CONJUNCTION WITH SAID BIASING ELECTRODE AND SAID ELECTROLYTE.
Claim 2
Dependent Claim
75 words
A GAS ANALYZER COMPRISING A SINGLE CONTAINER AND WITHIN SAID CONTAINER A PAIR OF GAS-DEPOLARIZABLE POROUS, CATALYZED, ACTIVATED CARBON CATHODES, A COMMON ANODE, A COMMON ELECTROLYTE FOR SAID CATHODES AND SAID ANODE; AN EXTERNAL RESISTIVE LOAD CONNECTED BETWEEN EACH CATHODE AND SAID ANODE; THE CATHODE BEING SITUATED SO THAT ONE SIDE OF EACH CATHODE IS EXPOSED TO A DEPOLARIZING GAS; AND MEANS FOR MEASURING THE POTENTIAL DIFFERENCE OF SAID CATHODES ELECTRICALLY CONNECTED ACROSS SAID CATHODES.
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |