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US3022241A
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US
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Method and apparatus for measurement of dissolved oxygen
Assignee: Leica Microsystems Inc
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Filing: 1958-02-11
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Granted: 1962-02-20
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Expires: 1978-02-11
Abstract
No abstract record available.
Inventors
- 👤 Jessop Gilbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN OXYGEN RESPONSIVE ELECTRO-CHEMICAL CELL COMPRISING A CONTAINER HAVING AN ELECTRICALLY CONDUCTIVE LIQUID THEREIN, A PAIR OF ELECTRODES OF DISSIMILAR NOBLE METALS WITHIN SAID CELL AND EXTENDING INTO SAID LIQUID, HYDROGEN SUPPLY MEANS COUPLED WITH SAID CONTAINER TO MAINTAIN SAID LIQUID IN A SUBSTANTIALLY UNIFORMLY HYDROGEN SATURATED CONDITION, MEANS FOR CIRCULATING OXYGEN THROUGH SAID SOLUTION AND ABOUT AT LEAST ONE OF SAID ELECTRODES, AND ELECTRICAL MEASURING APPARATUS INCLUDING A CONDUCTIVE IMPEDANCE FOR DIRECT CURRENT CONNECTED TO SAID ELECTRODES TO INDICATE THE MAGNITUDE OF ELECTRICAL OUTPUT OF SAID CELL PRODUCED BY THE PRESENCE OF OXYGEN IN SAID LIQUID.
Claim 2
Dependent Claim
97 words
AN OXYGEN RESPONSIVE ELECTRO-CHEMICAL CELL COMPRISING A CONTAINER HAVING AN ELECTRICALLY CONDUCTIVE LIQUID THEREIN, A PAIR OF ELECTRODES OF DISSIMILAR NOBLE METALS WITHIN SAID CELL AND EXTENDING INTO SAID LIQUID, HYDROGEN SUPPLY MEANS COUPLED WITH SAID CONTAINER TO MAINTAIN SAID LIQUID IN A SUBSTANTIALLY UNIFORMLY HYDROGEN SATURATED CONDITION, MEANS FOR CIRCULATING OXYGEN THROUGH SAID SOLUTION AND ABOUT AT LEAST ONE OF SAID ELECTRODES, AND ELECTRICAL MEASURING APPARATUS INCLUDING A CONDUCTIVE IMPEDANCE FOR DIRECT CURRENT CONNECTED TO SAID ELECTRODES TO INDICATE THE MAGNITUDE OF ELECTRICAL OUTPUT OF SAID CELL PRODUCED BY THE PRESENCE OF OXYGEN IN SAID LIQUID.
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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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |