Patent US4994238A successfully refreshed from Google Patents.
US3296113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-stream monitor
Assignee: Union Carbide Corp
•
Filing: 1963-10-15
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Granted: 1967-01-03
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Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Robert E Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:47
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404; H; H01; H01M; H01M12/00; H01M12/04; H01M12/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
GAS MONITOR COMPRISING, IN COMBINATION, A CASING PROVIDED WITH MAIN GAS INLET AND OUTLET PORTS OF A REFERENCE GAS INLET PORT; A GALVANIC SENSING ELEMENT DISPOSED WITHIN THE CASING AND INCLUDING TOW ELECTROCHEMICAL CELLS ELECTRICALLY CONNECTED SO AS TO OPPOSE EACH OTHER AND EACH HAVING A GAS-DEPOLAZABLE, POROUS CARBON CATHODE SITUATED WITHIIN THE CASING IN SPACED RELATION THERETO SO AS TO FORM TWO INDEPENDENT GAS PASSAGEWAYS, ONE OF WHICH COMMUNICATES BETWEEN SAID MAIN GAS INLET AND OUTLET PORTS AND THE OTHER OF WHICH COMMUNICATES WITH SAID REFERENCE GAS INLET, SAID GAS PASSAGEWAYS BEING SO ARRANGED AND DISPOSED AROUND THE CATHODE OF EACH ONE OF THE CELLS AS TO EXPOSE THE CATHODE OF ONE OF THE CELLS SOLELY TO THE FULL FLOW OF MAIN GAS THROUGH ONE PASSAGEWAY AND THE CATHODE
Claim 2
Dependent Claim
130 words
GAS MONITOR COMPRISING, IN COMBINATION, A CASING PROVIDED WITH MAIN GAS INLET AND OUTLET PORTS OF A REFERENCE GAS INLET PORT; A GALVANIC SENSING ELEMENT DISPOSED WITHIN THE CASING AND INCLUDING TOW ELECTROCHEMICAL CELLS ELECTRICALLY CONNECTED SO AS TO OPPOSE EACH OTHER AND EACH HAVING A GAS-DEPOLAZABLE, POROUS CARBON CATHODE SITUATED WITHIIN THE CASING IN SPACED RELATION THERETO SO AS TO FORM TWO INDEPENDENT GAS PASSAGEWAYS, ONE OF WHICH COMMUNICATES BETWEEN SAID MAIN GAS INLET AND OUTLET PORTS AND THE OTHER OF WHICH COMMUNICATES WITH SAID REFERENCE GAS INLET, SAID GAS PASSAGEWAYS BEING SO ARRANGED AND DISPOSED AROUND THE CATHODE OF EACH ONE OF THE CELLS AS TO EXPOSE THE CATHODE OF ONE OF THE CELLS SOLELY TO THE FULL FLOW OF MAIN GAS THROUGH ONE PASSAGEWAY AND THE CATHODE
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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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |